ORCID Profile
0000-0003-4068-8201
Current Organisation
University of Melbourne
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Research Topics
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Top 5 Research Topics
ANZSRC Field of Research (FoR)
Civil Engineering | Structural Engineering | Structural Engineering | Construction Materials | Interdisciplinary Engineering Not Elsewhere Classified | Interdisciplinary Engineering | Research, Science And Technology Policy | Information Systems Management | Transport Engineering | Timber engineering | Automation and technology in building and construction | Built Environment and Design not elsewhere classified | Decision Support and Group Support Systems | Engineering/Technology Instrumentation | Mechanical Engineering | Other Information, Computing And Communication Sciences | Engineering Systems Design | Transport Engineering | Civil Geotechnical Engineering | Construction Engineering | Infrastructure Engineering and Asset Management | Automotive Engineering | Environmental Engineering | Materials Engineering Not Elsewhere Classified | Sustainable design | Signal Processing | Other Built Environment and Design | Artificial Intelligence and Image Processing | Polymers | Distributed Computing | Urban and Regional Planning not elsewhere classified | Simulation and Modelling | Mechanical Engineering | Decision Support And Group Support Systems | Building | Simulation And Modelling | Civil Engineering Not Elsewhere Classified | Road And Rail Transportation | Environmental Engineering Modelling | Ubiquitous Computing | Distributed and Grid Systems | Mobile Technologies | Networking and Communications | Calculus of Variations, Systems Theory and Control Theory | Geotechnical Engineering | Risk Engineering (excl. Earthquake Engineering) | Automotive Engineering | Computer Vision | Pattern Recognition
ANZSRC Socio-Economic Objective (SEO)
Cement and concrete materials | Civil Construction Design | Commercial Construction Design | Other | Civil | Commercial | Road safety | Technological and organisational innovation | Environmentally Sustainable Construction not elsewhere classified | Housing | Cement and Concrete Materials | Computer software and services not elsewhere classified | Weather | Atmospheric Composition (incl. Greenhouse Gas Inventory) | Civil Construction Processes | Natural Hazards in Urban and Industrial Environments | Emerging Defence Technologies | Environmentally Sustainable Manufacturing not elsewhere classified | National Security | Personnel | Other road transport | Civil | Commercial | Ground transport not elsewhere classified | Rail Infrastructure and Networks | Urban and Industrial Air Quality | Management and productivity issues not elsewhere classified | Other | Metals (composites, coatings, bonding, etc.) | Integrated systems | Information Processing Services (incl. Data Entry and Capture) | Energy Conservation and Efficiency not elsewhere classified | Residential Construction Design | Air transport | Management of Solid Waste from Construction Activities | Integrated (ecosystem) assessment and management | Forestry not elsewhere classified | Construction Materials Performance and Processes not elsewhere classified | Structural Metal Products | Air Terminal Infrastructure and Management | Structural metal products | Civil | Expanding Knowledge in Built Environment and Design | Sheet metal products | Scientific instrumentation | Civil | Transport not elsewhere classified | Electricity, gas and water services and utilities | Environmentally Sustainable Transport not elsewhere classified |
Related Links
Publications
SPATIAL INFORMATION IN SUPPORT OF 3D FLOOD DAMAGE ASSESSMENT OF BUILDINGS AT MICRO LEVEL: A REVIEW
Publisher: Copernicus GmbH
Date: 05-10-2016
DOI: 10.5194/ISPRS-ANNALS-IV-2-W1-73-2016
Abstract: Abstract. Floods, as the most common and costliest natural disaster around the globe, have adverse impacts on buildings which are considered as major contributors to the overall economic damage. With emphasis on risk management methods for reducing the risks to structures and people, estimating damage from potential flood events becomes an important task for identifying and implementing the optimal flood risk-reduction solutions. While traditional Flood Damage Assessment (FDA) methods focus on simple representation of buildings for large-scale damage assessment purposes, recent emphasis on buildings’ flood resilience resulted in development of a sophisticated method that allows for a detailed and effective damage evaluation at the scale of building and its components. In pursuit of finding the suitable spatial information model to satisfy the needs of implementing such frameworks, this article explores the technical developments for an effective representation of buildings, floods and other required information within the built environment. The search begins with the Geospatial domain and investigates the state-of-the-art and relevant developments from data point of view in this area. It is further extended to other relevant disciplines in the Architecture, Engineering and Construction domain (AEC/FM) and finally, even some overlapping areas between these domains are considered and explored.
Thermal performance of calcium-rich alkali-activated materials: A microstructural and mechanical study
Publisher: Elsevier BV
Date: 10-2017
Net incremental indirect external benefit of manufacturing recycled aggregate concrete
Publisher: Elsevier BV
Date: 08-2018
Effective use of offsite manufacturing for public infrastructure projects in Australia
Publisher: ICE Publishing
Date: 2019
Use of Coupled Smooth-Particle Hydrodynamics/Lagrangian Method in the Simulation of Deformable Projectile Penetration
Publisher: SAGE Publications
Date: 09-2015
DOI: 10.1260/2041-4196.6.3.419
Abstract: Mesh-dependent finite element (FE) analysis poses considerable limitations in terms of applying it in large deformation problems. As simulations such as projectile penetration are largely dependent on the material failure criterion, the artificial element erosion technique, which is usually incorporated in mesh-dependent FE techniques, may result in considerable inaccuracies. Therefore, over the last few decades, computational mechanists and engineers have focussed on implementing a mesh-independent analysis method to overcome the numerical instabilities that occur in mesh-dependent FE methods. The smooth-particle hydrodynamics (SPH) technique is one of the methods that is becoming popular among computational mechanists and engineers. The knowledge and understanding of different parameters involved in such simulation is essential prior to its application. In this study, a comprehensive numerical investigation of projectile penetration through monolithic aluminium plates using the SPH technique has been performed. While there have been studies reported in published literatures on the application of the SPH technique on projectile simulations, very limited attention has been placed on investigating the influence of different parameters on the analysis results, especially on deformation of the projectiles. One of the main objectives of this study is to investigate the contribution of different numerical parameters on the simulation of complete penetration of deformable projectiles (5.56 mm x 45 mm NATO standard) through 16 mm AA5061-H116 aluminium plates. The effects of particle density, smooth length, different particle sorting options, and scale factor for smooth length, have been parametrically studied and presented. In addition, the penetration mechanism of projectiles through a metallic target has been numerically and experimentally studied. Numerical simulations show very good agreement with the experimental results. The velocity time histories for monolithic aluminium plates show a “dip” in its velocity reduction, which is considerably difficult to observe in mesh-dependent methods. Three stages of the penetration process have been numerically identified and discussed.
Integrated assessment of the use of recycled concrete aggregate replacing natural aggregate in structural concrete
Publisher: Elsevier BV
Date: 02-2018
Pore characteristics in one-part mix geopolymers foamed by H 2 O 2 : The impact of mix design
Publisher: Elsevier BV
Date: 09-2017
Flexural Performance of Prefabricated Ultra-High-Strength Textile Reinforced Concrete (UHSTRC): An Experimental and Analytical Investigation
Publisher: MDPI AG
Date: 02-04-2020
DOI: 10.3390/BUILDINGS10040068
Abstract: Textile Reinforced Concrete (TRC) is a prefabricated novel lightweight high-performance composite material that can be used as a load-bearing or non-load-bearing component of prefabricated buildings. Making TRC with Ultra-High-Strength Concrete (UHSC) (≥100 MPa) can be considered as a potential improvement method to further enhance its properties. This paper investigated the performance of Ultra-High-Strength Textile Reinforced Concrete (UHSTRC) under flexural loading. A detailed experimental program was conducted to investigate the behavior of UHSC on TRC. In the experimental program, a sudden drop in load was observed when the first crack appeared in the UHSTRC. A detailed analytical program was developed to describe and understand such behavior of UHSTRC found in experiments. The analytical program was found to be in good agreement with the experimental results and it was used to carry out an extensive parametric study covering the effects of the number of textile layers, textile material, textile mesh density, and UHSTRC thickness on the performance of UHSTRC. Using a high number of textile layers in thin UHSTRC was found to be more effective than using high-thickness UHSTRC. The high modulus textile layers effectively increase the performance of UHSTRC.
Comparative assessment of the benefits associated with the absorption of CO2 with the use of RCA in structural concrete
Publisher: Elsevier BV
Date: 08-2017
Identification of the risk of blast-induced glass window failure in a complex environment
Publisher: SAGE Publications
Date: 03-2018
Abstract: Analyzing the risk of failure of glass windows when they are subjected to an explosion is a difficult task, requiring a comprehensive understanding of the dynamic behavior of glass and the glass fracture mechanism under blast loads. An efficient approach is required for estimating the level of risk in a complex environment, such as in a built-up city block. This article investigates the level of risk of the failure of glass windows in a complex layout when they are subjected to blast pressures using the probabilistic neural network model. Radial basis function and Bayesian theory are used to address the probabilistic nature of glass failure. The efficacy of the neural network is verified by comparing its risk predictions with blast damage observations from a real-life event. Computational fluid dynamics is used to estimate the magnitude of blast pressures at different locations. The complexity of the built-up environment does affect the level of risk at various locations. The artificial neural network technique provides a quick prediction of the likely damage to glass windows and the consequences for building occupants, offering advantages and practical significance for risk quantification in complex layouts.
A comparative study on minimum shear reinforcement provisions in codes of practice for reinforced concrete beams
Publisher: Elsevier BV
Date: 12-2021
Engineering Performance of Concrete Incorporated with Recycled High-Density Polyethylene (HDPE)—A Systematic Review
Publisher: MDPI AG
Date: 06-06-2021
Abstract: Incorporating recycled plastic waste in concrete manufacturing is one of the most ecologically and economically sustainable solutions for the rapid trends of annual plastic disposal and natural resource depletion worldwide. This paper comprehensively reviews the literature on engineering performance of recycled high-density polyethylene (HDPE) incorporated in concrete in the forms of aggregates or fiber or cementitious material. Optimum 28-days’ compressive and flexural strength of HDPE fine aggregate concrete is observed at HDPE-10 and splitting tensile strength at HDPE-5 whereas for HDPE coarse aggregate concrete, within the range of 10% to 15% of HDPE incorporation and at HDPE-15, respectively. Similarly, 28-days’ flexural and splitting tensile strength of HDPE fiber reinforced concrete is increased to an optimum of 4.9 MPa at HDPE-3 and 4.4 MPa at HDPE-3.5, respectively, and higher than the standard lain concrete matrix (HDPE-0) in all HDPE inclusion levels. Hydrophobicity, smooth surface texture and non-reactivity of HDPE has resulted in weaker bonds between concrete matrix and HDPE and thereby reducing both mechanical and durability performances of HDPE concrete with the increase of HDPE. Overall, this is the first ever review to present and analyze the current state of the mechanical and durability performance of recycled HDPE as a sustainable construction material, hence, advancing the research into better performance and successful applications of HDPE concrete.
Feasibility of Using Lead–Zinc Tailings to Produce Environmentally Friendly Ceramisite
Publisher: American Society of Civil Engineers (ASCE)
Date: 11-2021
Improving performance of additive manufactured (3D printed) concrete: A review on material mix design, processing, interlayer bonding, and reinforcing methods
Publisher: Elsevier BV
Date: 02-2021
New Method to Evaluate the Biaxial Interaction Exponent for RC Columns
Publisher: American Society of Civil Engineers (ASCE)
Date: 12-2005
Finite Element Modelling of Concentrated Anchorage Load in Early Age Concrete
Publisher: Springer International Publishing
Date: 2021
Fire safety of composites in prefabricated buildings: From fibre reinforced polymer to textile reinforced concrete
Publisher: Elsevier BV
Date: 04-2020
Strength Development and Thermogravimetric Investigation of High-Volume Fly Ash Binders
Publisher: MDPI AG
Date: 14-10-2019
DOI: 10.3390/MA12203344
Abstract: To address sustainability issues by facilitating the use of high-volume fly ash (HVFA) concrete in industry, this paper investigates the early age hydration properties of HVFA binders in concrete and the correlation between hydration properties and compressive strengths of the cement pastes. A new method of calculating the chemically bound water of HVFA binders was used and validated. Fly ash (FA) types used in this study were sourced from Indonesia and Australia for comparison. The water to binder (w/b) ratio was 0.4 and FA replacement levels were 40%, 50% and 60% by weight. Isothermal calorimetry tests were conducted to study the heat of hydration which was further converted to the adiabatic temperature rise. Thermo-gravimetric analysis (TGA) was employed to explore the chemically bound water (WB) of the binders. The results showed that Australian FA pastes had higher heat of hydration, adiabatic temperature rise, WB and compressive strength compared to Indonesian FA pastes. The new method of calculating chemically bound water can be successfully applied to HVFA binders. Linear correlation could be found between the WB and compressive strength.
Comparative assessment of embodied energy of recycled aggregate concrete
Publisher: Elsevier BV
Date: 05-2017
Experimental investigation of progressive collapse potential of ordinary and special moment-resisting reinforced concrete frames
Publisher: Springer Science and Business Media LLC
Date: 20-02-2017
Role of Dynamic Loading on Early Stage of Bone Fracture Healing
Publisher: Springer Science and Business Media LLC
Date: 09-07-2018
DOI: 10.1007/S10439-018-2083-X
Abstract: After fracture, mesenchymal stem cells (MSCs) and growth factors migrate into the fracture callus to exert their biological actions. Previous studies have indicated that dynamic loading induced tissue deformation and interstitial fluid flow could produce a biomechanical environment which significantly affects the healing outcomes. However, the fundamental relationship between the various loading regimes and different healing outcomes has not still been fully understood. In this study, we present an integrated computational model to investigate the effect of dynamic loading on early stage of bone fracture healing. The model takes into account cell and growth factor transport under dynamic loading, and mechanical stimuli mediated MSC differentiation and tissue production. The developed model was firstly validated by the available experimental data, and then implemented to identify the loading regimes that produce the optimal healing outcomes. Our results demonstrated that dynamic loading enhances MSC and growth factor transport in a spatially dependent manner. For ex le, compared to free diffusion, dynamic loading could significantly increase MSCs concentration in endosteal zone and chondrogenic growth factors in both cortical and periosteal zones in callus. Furthermore, there could be an optimal dynamic loading regime (e.g. 10% strain at 1 Hz) which could potentially significant enhance endochondral ossification.
Dynamic response of double skin façades under blast loads
Publisher: Elsevier BV
Date: 09-2016
Polyurea coated composite aluminium plates subjected to high velocity projectile impact
Publisher: Elsevier BV
Date: 12-2013
Examination of alkali-activated material nanostructure during thermal treatment
Publisher: Springer Science and Business Media LLC
Date: 05-04-2018
Aggregate interlock in fractured concrete mesoscale models: a novel finite element modelling approach
Publisher: Springer Science and Business Media LLC
Date: 17-07-2022
DOI: 10.1007/S43452-022-00488-4
Abstract: Aggregate interlock is a stress transfer mechanism in cracked concrete. After concrete cracks under tensile loading, crack interfaces can experience significant slip deformation due to the applied crack kinematics. Upon rising slip along crack interfaces, aggregate interlock stresses are generated which transfer shear stress and normal stress. Many experimental programmes and analytical expressions have been developed for several decades. However, a finite element model considering realistic crack surfaces was still not developed. The complexity of developing a FE model lies due to the mesoscopic nature of the problem. In this study, concrete mesoscale models were employed to generate realistic cracked concrete surfaces. Uniaxial tensile fracture propagation in concrete mesoscale models were achieved using Zero-thickness cohesive elements approach. Once cracked concrete FE models are developed, validation of the proposed FE models was conducted against two experimental c aigns. The study comprises the evaluation of the surface roughness index of the cracked concrete surfaces. The FE model predicts secondary cracking under low initial crack widths and mixed mode angles. FE predictions were further compared with Walraven’s simplified formulae, Bažant’s rough crack model, Cavagnis’s aggregate interlock formulae and contact density model and consistence agreement was observed. Finally, strengths and weaknesses of the proposed FE modelling approach for aggregate interlock was discussed and further implementations were also highlighted.
Multi-scale analysis on thermal properties of cement-based materials containing micro-encapsulated phase change materials
Publisher: Elsevier BV
Date: 09-2020
Performance of high-strength concrete walls exposed to fire
Publisher: SAGE Publications
Date: 26-09-2017
Abstract: High-strength concrete is becoming very popular around the world due to its many advantages over normal-strength concrete. There are significant behavioural differences between high-strength concrete and normal-strength concrete, most notably the brittleness and sudden spalling under elevated temperatures, whereby pieces of hardened concrete explosively dislodge. Although all high-rise and even many medium-rise buildings have high-strength concrete walls, the spalling of high-strength concrete walls in fire has generally been ignored by the designers and the fire resistance of walls has been calculated using the rules specified for normal-strength concrete. Catastrophic failures could occur due to this ignorance of an important issue. Major design codes including the American and Australian Codes do not cover spalling adequately. Even the Eurocode rules are based on limited research. After a brief discussion on the present design practice, this article presents a summary of spalling research. The relevant results from a comprehensive study conducted at the University of Melbourne are briefly discussed. The authors are not aware of any other comprehensive research projects covering the fire behaviour of normal-strength concrete and high-strength concrete walls exposed not only to standard fires but also hydrocarbon fires. The results showed that spalling in high-strength concrete is more significant when subjected to hydrocarbon fire compared to normal-strength concrete. The level of compressive load on the panels was also found to have a significant effect on the fire performance of the high-strength concrete panels. The finite analysis element program, ANSYS, was used to model the concrete walls subjected to load and fire (both ISO834 Standard fire and hydrocarbon fire). The test results were used to validate the computer model.
The IASLC Lung Cancer Staging Project: External Validation of the Revision of the TNM Stage Groupings in the Eighth Edition of the TNM Classification of Lung Cancer
Publisher: Elsevier BV
Date: 07-2017
DOI: 10.1016/J.JTHO.2017.04.011
Abstract: Revisions to the TNM stage classifications for lung cancer, informed by the international database (N = 94,708) of the International Association for the Study of Lung Cancer (IASLC) Staging and Prognostic Factors Committee, need external validation. The objective was to externally validate the revisions by using the National Cancer Data Base (NCDB) of the American College of Surgeons. Cases presenting from 2000 through 2012 were drawn from the NCDB and reclassified according to the eighth edition stage classification. Clinically and pathologically staged subsets of NSCLC were analyzed separately. The T, N, and overall TNM classifications were evaluated according to clinical, pathologic, and "best" stage (N = 780,294). Multivariate analyses were carried out to adjust for various confounding factors. A combined analysis of the NSCLC cases from both databases was performed to explore differences in overall survival prognosis between the two databases. The databases differed in terms of key factors related to data source. Survival was greater in the IASLC database for all stage categories. However, the eighth edition TNM stage classification system demonstrated consistent ability to discriminate TNM categories and stage groups for clinical and pathologic stage. The IASLC revisions made for the eighth edition of lung cancer staging are validated by this analysis of the NCDB database by the ordering, statistical differences, and homogeneity within stage groups and by the consistency within analyses of specific cohorts.
Design and construction of the new library at China Agricultural University
Publisher: Thomas Telford Ltd.
Date: 05-2019
Abstract: A new, world-class library has been built at China Agricultural University in Beijing, the oldest agricultural higher education institute in China. The new building’s attractive natural stone facades reflect both old and new, from bamboo writing slips to barcodes, while the dramatic internal space is user-friendly, energy-efficient and flexible. During construction, an innovative hybrid diaphragm walling solution was adopted due to the high groundwater level and restricted site. Building information modelling technology was also successfully used throughout design and construction, helping to improve construction quality and safety management.
Effects of calcium formate on early-age strength and microstructure of high-volume fly ash cement systems
Publisher: Thomas Telford Ltd.
Date: 12-2021
Abstract: Replacement of Portland cement (PC) by fly ash (FA) is currently limited to 15–30% by mass, mainly due to low early age strength development of concrete. This research uses calcium formate (Ca(HCO 2 ) 2 CF) as an admixture to high-volume FA (HVFA) composites to improve its strength properties. HVFA represents 60–70% of cement replaced by FA and dosage of CF varies from 0.5% up to high dosage of 9% of cement content. Compressive strength, isothermal calorimetry, thermogravimetric analysis, X-ray diffraction and scanning electron microscopy were conducted to investigate the effects of CF on hydration and microstructural aspects. The results show that both HVFA pastes with 60% and 70% FA achieved the highest strength at the CF dosage of 3%. At the age of 28 days, adding 3% CF to HVFA mixes led to higher consumption of FA as well as higher formation of calcium hydroxide (Ca(OH) 2 ), calcium silicate hydrates, calcium carbonate (CaCO 3 ) and ettringite, which contribute to the increase of strength. The addition of very high dosages of CF at 9% increased the hydration of tricalcium aluminate but could hinder the hydration of tricalcium silicate in both PC and HVFA pastes with 60% and 70% FA.
Understanding fracture mechanism and behaviour of ultra-high strength concrete using mesoscale modelling
Publisher: Elsevier BV
Date: 07-2020
Evaluation of inter-modular connection behaviour under lateral loads: An experimental and numerical study
Publisher: Elsevier BV
Date: 07-2022
Influences of clay and manufacturing on fire resistance of organoclay/thermoset nanocomposites
Publisher: Elsevier BV
Date: 07-2015
Flexural Capacity Prediction Model For Steel Fibre-Reinforced Concrete Beams
Publisher: Springer Science and Business Media LLC
Date: 03-06-2021
DOI: 10.1186/S40069-021-00461-0
Abstract: Steel fibre (SF) reinforcement has been shown to improve the ductility of high strength concrete (HSC), which is known to be brittle. Research conducted to date on steel fibre reinforced concrete and its effects have emphasised post-failure performance and cracking mechanism. The difficulty in predicting the behaviour of fibres is due to the randomly distributed nature of the material within the matrix leading to a probability distribution of results. Published literature has shown a benefit of adding steel fibres in terms of the ductility performance of structures. Clearly, there is a potential for such material as replacement of conventional steel reinforcement. This study proposes a theoretical model of evaluating the potential of using steel fibres as a replacement material to conventional steel reinforcement bars based on the case study, laboratory and theoretical methodologies. The compressive strength of the concrete at key dates, the effective fibre cross-sectional were measured, and a prediction model was created based on the measurement parameters. The use of four-point flexural testing, standard compressive testing and software image modelling provided the study with relevant data used to analyse and compare to the prediction. Greater ductility performance and toughness were observed with increased fibre volumes, confirming proposed predictions and conclusion drawn from published literature. No consistent or conclusive correlations between fibre volumes and the compressive strength of concrete were found. A relationship between fibre volumes and predicted moment capacities of steel fibre reinforced concrete beams was found based on the proposed theoretical flexural analysis method.
Engineering properties of inorganic polymer concretes (IPCs)
Publisher: Elsevier BV
Date: 02-2007
Identification of transversely isotropy of calcium silicate hydrate using nanoindentation and finite element analysis
Publisher: Elsevier BV
Date: 11-2020
Strain rate dependent constitutive model for predicting the material behaviour of polyurea under high strain rate tensile loading
Publisher: Elsevier BV
Date: 2014
Plastic Hinge Lengths of Normal and High-Strength Concrete in Flexure
Publisher: SAGE Publications
Date: 10-2002
DOI: 10.1260/136943301320896651
Abstract: Full-range analysis methods are becoming popular in design of reinforced concrete structures. These methods require a knowledge of the behaviour of plastic hinges up to advanced curvatures. Concrete sections characteristically soften beyond the plastic phase. To analyse a strain-softening structure, many researchers have used a finite hinge length. In this paper, existing formulae are re-examined and the effects of different variables on hinge length are discussed. Experimentally measured values are compared with the values predicted by using these formulae. It is shown that the upper and lower bounds suggested by the ACI committee 428 provide reliable estimates of hinge lengths for both normal and high-strength concrete flexural hinges up to 80 MPa.
Progressive collapse analysis of a typical RC high-rise tower
Publisher: Elsevier BV
Date: 10-2017
Optimising the computational domain size in CFD simulations of tall buildings
Publisher: Elsevier BV
Date: 04-2021
Nano-CSH modified high volume fly ash concrete: Early-age properties and environmental impact analysis
Publisher: Elsevier BV
Date: 03-2021
Structural performance of recycled aggregate in CSP slab subjected to flexure load
Publisher: Elsevier BV
Date: 07-2016
Recycling of landfill wastes (tyres, plastics and glass) in construction – A review on global waste generation, performance, application and future opportunities
Publisher: Elsevier BV
Date: 10-2021
Novel modelling approach for evacuation strategies of tall towers - A case study of Lotus Tower
Publisher: Elsevier BV
Date: 09-2019
Creep properties of cement and alkali activated fly ash materials using nanoindentation technique
Publisher: Elsevier BV
Date: 04-2018
Applicability of Current ACI318 Wall Design Formula for High Strength Concrete Walls
Publisher: SAGE Publications
Date: 04-1999
DOI: 10.1177/136943329900200203
Abstract: This paper presents an overview of testing undertaken to determine the axial load capacity of normal and high strength concrete walls simply supported at top and bottom edges. The failure loads from testing are compared to results obtained using the simplified equation given in the American concrete code of practice, ACI318 (1995) and to an analytical method developed by the authors. The comparison indicates that modifications to the code wall design equation may be required when high strength concrete is used. Also, the more accurate analytical method was found to compare more favourably with the test results than the predictions from the code method.
Shear Behavior of Geopolymer Concrete Beams Reinforced with GFRP Bars
Publisher: American Concrete Institute
Date: 03-2017
DOI: 10.14359/51689150
A probabilistic approach for modelling bone fracture healing under Ilizarov circular fixator
Publisher: Wiley
Date: 26-04-2021
DOI: 10.1002/CNM.3466
Abstract: Bone fracture treatments using Ilizarov circular fixator (ICF) involve dealing with uncertainties about a range of critical factors that control the mechanical microenvironment of the fracture site such as ICF configuration, fracture gap size, physiological loading etc. To date, the effects of the uncertainties about these critical factors on the mechanical microenvironment of the fracture site have not been fully understood. The purpose of this study is to tackle this challenge by using computational modelling in conjunction with engineering reliability analysis. Particularly, the effects of uncertainties in fracture gap size (GS), level of weight‐bearing (P), ICF wire pretension (T) and wire diameter (WD) on the fracture site mechanical microenvironment at the beginning of the reparative phase of healing was investigated in this study. The results show that the mechanical microenvironment of fracture site stabilised with ICF is very sensitive to the uncertainties in P and GS. For ex le, an increase in the coefficient of variation of P ( COV P ) from 0.1 to 0.9 (i.e., an increase in the uncertainty in P) could reduce the probability of achieving a favourable mechanical microenvironment within the fracture site (i.e., Probability of Success, PoS) by more than 50%, while an increase in the coefficient of variation of GS ( COV GS ) from 0.1 to 0.9 could decrease PoS by around 30%. In contrast, an increase in the uncertainties in T and WD ( COV increase from 0.1 to 0.9) has little influence on the fracture site mechanical microenvironment (PoS changes %).
Modelling of nano-silica in cement paste
Publisher: SPIE
Date: 09-08-2013
DOI: 10.1117/12.2028056
Elastomeric polymers for retrofitting of reinforced concrete structures against the explosive effects of blast
Publisher: Hindawi Limited
Date: 2012
DOI: 10.1155/2012/754142
Abstract: The main distinction of blast load from other types of dynamic loadings is its impulsive nature, where the loads usually act for a very short duration but transmit very high impulsive pressures. This paper presents an overview of the present retrofitting techniques in use to enhance the capacity of structural elements to withstand the effects of blast loads, and introduces an alternative retrofitting approach by utilizing polymer coatings. The authors have demonstrated the positive effects of this approach by conducting a numerical investigation on the behavior of an unretrofitted reinforced concrete panel subjected to the blast load from a 2 kg charge at 1.6 m stand-off distance, and subsequently comparing its performance with several polymer coated panels. The analysis was performed by using an explicit nonlinear finite element (FE) code. The results demonstrate the contributions of this technique in terms of panel displacement control and energy dissipation. Considering that the polymer coating can also act as a protective layer in improving the durability of structural materials, this technique can also be optimized favorably to enhance the overall sustainability of structures.
Artificial intelligence and smart vision for building and construction 4.0: Machine and deep learning methods and applications
Publisher: Elsevier BV
Date: 09-2022
Rehabilitation of Continuous Reinforced Concrete Beams in Shear by External Bonding of Carbon Fiber Reinforced Polymer Strips for Sustainable Construction
Publisher: Trans Tech Publications, Ltd.
Date: 09-2016
DOI: 10.4028/WWW.SCIENTIFIC.NET/KEM.708.49
Abstract: To achieve sustainability in construction, the rehabilitation of existing concrete structures is vital in ensuring its structural integrity and longevity. Therefore, an experimental investigation on the shear strengthening of 2-span continuous reinforced concrete (RC) beams wrapped with carbon fiber reinforced polymer (CFRP) strips were conducted. The beam specimens were subjected to four point bending test and loaded incrementally until failure occurs. Different wrapping schemes and layers of CFRP strips were externally bonded within the shear span of the beams. The failure load, modes of failure, its crack patterns, deflection profile were recorded and presented for discussion. From observation, the experimental results indicated good improvement as the shear strengthened beams shows enhanced failure load and shear strength capacity. An improved stiffness and ductility behaviour was also observed compared to the control beam. Comparison with ACI 440 (2008) design provisions for shear strength shows that the prediction values underestimated its experimental results. This indicates that the enhanced shear performances of the 2-span continuous RC beams prove the reliability of CFRP as a strengthening material. Hence, the shear strengthening technique allows the rehabilitation process of existing structural members to improve its structural integrity, longevity and sustainability.
Investigations of cavity pressure behaviors of double-skin Façade systems subjected to blast loads
Publisher: American Society of Civil Engineers (ASCE)
Date: 10-2015
Effect of pre-saturated lightweight sand on material properties of eco-friendly lightweight cementitious composites
Publisher: Informa UK Limited
Date: 15-07-2022
Dependency Structure Matrix and Hierarchical Clustering based algorithm for optimum module identification in MEP systems
Publisher: Elsevier BV
Date: 08-2019
Shear Strengthening and Shear Repair of 2-Span Continuous RC Beams with CFRP Strips
Publisher: American Society of Civil Engineers (ASCE)
Date: 06-2017
Determining dynamic characteristics of high rise buildings using interferometric radar system
Publisher: Elsevier BV
Date: 06-2018
Life cycle greenhouse gas emissions and energy analysis of prefabricated reusable building modules
Publisher: Elsevier BV
Date: 04-2012
Interior wide beam connections subjected to lateral earthquake loading
Publisher: Elsevier BV
Date: 02-2003
Hydration and strength evolution of ternary-blend high-volume fly ash concretes
Publisher: American Concrete Institute
Date: 09-2019
DOI: 10.14359/51716815
Ductility Design of Reinforced Very-High Strength Concrete Columns (100–150 MPa) Using Curvature and Energy-Based Ductility Indices
Publisher: Springer Science and Business Media LLC
Date: 03-06-2019
Experimental investigation on the tensile behavior of polyurea at high strain rates
Publisher: Elsevier BV
Date: 09-2013
Analytical and numerical investigation of polyurea layered aluminium plates subjected to high velocity projectile impact
Publisher: Elsevier BV
Date: 10-2015
Optimisation and financial analysis of an organic Rankine cycle cooling system driven by facade integrated solar collectors
Publisher: Elsevier BV
Date: 2017
Large-scale experiment on the behaviour of concrete flat slabs subjected to standard fire
Publisher: Elsevier BV
Date: 07-2020
Structural applications of synthetic fibre reinforced cementitious composites: A review on material properties, fire behaviour, durability and structural performance
Publisher: Elsevier BV
Date: 12-2021
Nanomechanical properties of thermal arc sprayed coating using continuous stiffness measurement and artificial neural network
Publisher: Elsevier BV
Date: 05-2019
Fire resistance of a prefabricated bushfire bunker using aerated concrete panels
Publisher: Elsevier BV
Date: 06-2018
New Compressive Test Methods for GFRP Bars
Publisher: Springer International Publishing
Date: 27-09-2022
Methodology for the integrated assessment on the use of recycled concrete aggregate replacing natural aggregate in structural concrete
Publisher: Elsevier BV
Date: 11-2017
Computational simulation of the early stage of bone healing under different configurations of locking compression plates
Publisher: Informa UK Limited
Date: 21-11-2013
DOI: 10.1080/10255842.2013.855729
Abstract: Flexible fixation or the so-called 'biological fixation' has been shown to encourage the formation of fracture callus, leading to better healing outcomes. However, the nature of the relationship between the degree of mechanical stability provided by a flexible fixation and the optimal healing outcomes has not been fully understood. In this study, we have developed a validated quantitative model to predict how cells in fracture callus might respond to change in their mechanical microenvironment due to different configurations of locking compression plate (LCP) in clinical practice, particularly in the early stage of healing. The model predicts that increasing flexibility of the LCP by changing the bone-plate distance (BPD) or the plate working length (WL) could enhance interfragmentary strain in the presence of a relatively large gap size (> 3 mm). Furthermore, conventional LCP normally results in asymmetric tissue development during early stage of callus formation, and the increase of BPD or WL is insufficient to alleviate this problem.
Failure modes and buckling coefficient of partially stiffened cold-formed sections in bending
Publisher: Elsevier BV
Date: 08-2015
The relationship between interfragmentary movement and cell differentiation in early fracture healing under locking plate fixation
Publisher: Springer Science and Business Media LLC
Date: 03-12-2016
DOI: 10.1007/S13246-015-0407-9
Abstract: Interfragmentary movement (IFM) at the fracture site plays an important role in fracture healing, particularly during its early stage, via influencing the mechanical microenvironment of mesenchymal stem cells within the fracture callus. However, the effect of changes in IFM resulting from the changes in the configuration of locking plate fixation on cell differentiation has not yet been fully understood. In this study, mechanical experiments on surrogate tibia specimens, manufactured from specially formulated polyurethane, were conducted to investigate changes in IFM of fractures under various locking plate fixation configurations and loading magnitudes. The effect of the observed IFM on callus cell differentiation was then further studied using computational simulation. We found that during the early stage, cell differentiation in the fracture callus is highly influenced by fracture gap size and IFM, which in turn, is highly sensitive to locking plate fixation configuration. The computational model predicted that a small gap size (e.g. 1 mm) under a relatively flexible configuration of locking plate fixation (larger bone-plate distances and working lengths) could experience excessive strain and fluid flow within the fracture site, resulting in excessive fibrous tissue differentiation and delayed healing. By contrast, a relatively flexible configuration of locking plate fixation was predicted to improve cartilaginous callus formation and bone healing for a relatively larger gap size (e.g. 3 mm). If further confirmed by animal and human studies, the research outcome of this paper may have implications for orthopaedic surgeons in optimising the application of locking plate fixations for fractures in clinical practice.
Upcycling opportunities and potential markets for aluminium composite panels with polyethylene core (ACP-PE) cladding materials in Australia: A review
Publisher: Elsevier BV
Date: 11-2022
Underwater impulsive loading-induced dynamic failures of monolithic composite panel
Publisher: Trans Tech Publications, Ltd.
Date: 05-2014
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMM.553.539
Abstract: Designing light-weight high-performance materials which can sustain high impulsive loadings is of great interest to marine applications. In this study, a finite element fluid-structure interaction model is developed to understand the deformation and failure mechanisms of both monolithic and sandwich composite panels. Fiber (E-glass fiber) and matrix (vinylester resin) damage and degradation in in idual unidirectional composite laminas are modeled with Hashin’s model. The delamination between laminas is modeled by developing a strain rate sensitive cohesive law. The deformation of the core (H250 PVC foam) in sandwich panels is modelled as a crushable foam plasticity model with volumetric hardening and strain rate sensitivity as well. The deformation history, fiber/matrix damage patterns in laminas, and inter-lamina delamination in both monolithic and sandwich composite panels are identified and compared with the experimental observations. The model suggests that the foam plays an important role in improving the performance of the sandwich panels by suppressing the transmitted impulsive acting on the back-sheets.
DESIGN OF A SMART PREFABRICATED SANITISING CHAMBER FOR COVID-19 USING COMPUTATIONAL FLUID DYNAMICS
Publisher: Vilnius Gediminas Technical University
Date: 23-02-2021
Abstract: The novel coronavirus (SARS-CoV-2) has spread at an unprecedented rate, resulting in a global pandemic (COVID-19) that has strained healthcare systems and claimed many lives. Front-line healthcare workers are among the most at risk of contracting and spreading the virus due to close contact with infected patients and settings of high viral loads. To provide these workers with an extra layer of protection, the authors propose a low-cost, prefabricated, and portable sanitising chamber that sprays in iduals with sanitising fluid to disinfect clothing and external surfaces on their person. The study discusses computer-aided design of the chamber to improve uniformity of sanitiser deposition and reduce discomfort due to excessive moisture. Advanced computational fluid dynamics is used to simulate the dispersion and deposition of spray particle, and the resulting wetting pattern on the treated person is used to optimise the chamber design.
Designing Post COVID-19 Buildings: Approaches for Achieving Healthy Buildings
Publisher: MDPI AG
Date: 12-01-2022
DOI: 10.3390/BUILDINGS12010074
Abstract: The COVID-19 pandemic forced the accessibility, social gathering, lifestyle, and working environment to be changed to reduce the infection. Coronavirus spreads between people in several different ways. Small liquid particles (aerosols, respiratory droplets) from an infected person are transmitted through air and surfaces that are in contact with humans. Reducing transmission through modified heating, ventilation, and air conditioning (HVAC) systems and building design are potential solutions. A comprehensive review of the engineering control preventive measures to mitigate COVID-19 spread, healthy building design, and material was carried out. The current state-of-the-art engineering control preventive measures presented include ultraviolet germicidal irradiation (UVGI), bipolar ionization, vertical gardening, and indoor plants. They have potential to improve the indoor air quality. In addition, this article presents building design with materials (e.g., copper alloys, anti-microbial paintings) and smart technologies (e.g., automation, voice control, and artificial intelligence-based facial recognition) to mitigate the infections of communicable diseases.
A BIM-GIS integration method in support of the assessment and 3D visualisation of flood damage to a building
Publisher: Informa UK Limited
Date: 07-06-2016
Development limitations of compressive arch and catenary actions in reinforced concrete special moment resisting frames under column-loss scenarios
Publisher: Informa UK Limited
Date: 12-02-2020
Piled Raft Foundation System for Tall Buildings
Publisher: Springer Singapore
Date: 19-09-2020
Improving aerodynamic performance of tall buildings using façade openings at service floors
Publisher: Elsevier BV
Date: 06-2022
A new design-oriented model of glass fiber-reinforced polymer-reinforced hollow concrete columns
Publisher: American Concrete Institute
Date: 03-2020
DOI: 10.14359/51720204
Structural Health Monitoring Technologies and Next-Generation Smart Composite Structures
Publisher: CRC Press
Date: 15-09-2016
Structural behaviour of prefabricated load bearing braced composite timber wall system
Publisher: Elsevier BV
Date: 12-2018
Cohesive-strength properties versus porosity of cementitious materials
Publisher: Elsevier BV
Date: 10-2020
Influence of fracture geometry on bone healing under locking plate fixations: A comparison between oblique and transverse tibial fractures
Publisher: Elsevier BV
Date: 10-2016
DOI: 10.1016/J.MEDENGPHY.2016.07.007
Abstract: Mechano-regulation plays a crucial role in bone healing and involves complex cellular events. In this study, we investigate the change of mechanical microenvironment of stem cells within early fracture callus as a result of the change of fracture obliquity, gap size and fixation configuration using mechanical testing in conjunction with computational modelling. The research outcomes show that angle of obliquity (θ) has significant effects on interfragmentary movement (IFM) which influences mechanical microenvironment of the callus cells. Axial IFM at near cortex of fracture decreases with θ, while shear IFM significantly increases with θ. While a large θ can increase shear IFM by four-fold compared to transverse fracture, it also result in the tension-stress effect at near cortex of fracture callus. In addition, mechanical stimuli for cell differentiation within the callus are found to be strongly negatively correlated to angle of obliquity and gap size. It is also shown that a relatively flexible fixation could enhance callus formation in presence of a large gap but could lead to excessive callus strain and interstitial fluid flow when a small transverse fracture gap is present. In conclusion, there appears to be an optimal fixation configuration for a given angle of obliquity and gap size.
The effects of precursors on rheology and self-compactness of geopolymer concrete
Publisher: Thomas Telford Ltd.
Date: 06-2019
Abstract: The inefficiency of typical superplasticisers in geopolymer compared with Portland cement limits the design of a self-compacting concrete. This study investigated the rheology, reactivity and strength of a fly ash, slag and micro fly ash system without superplasticisers in order to find an optimum self-compacting behaviour. The particle size distribution was used to design a mixture of precursors with the highest packing density. The theoretical packing density based on particle size distribution was in close agreement with experimentally obtained packing densities. The effect of the width of the particle size distribution, as determined by the n value in the Rosin–Rammler function, on the rheology of the pastes was confirmed by a close agreement between the predicted yield stress and the experimental values. The initial setting time decreased with the increase in slag and micro fly ash. Finally, a geopolymer concrete was designed that meets the workability requirement of self-compacting concrete with comparable compressive strength without superplasticisers.
Design of prefabricated footing connection using a coupled hydro‐mechanical finite element model
Publisher: Wiley
Date: 23-11-2021
Abstract: The use of prefabricated systems can alleviate the inadequate housing and skilled workers in most developed countries by expediting required construction time, reducing material wastage, decreasing the effect of weather impacts, minimizing unexpected costs, skilled labor dependence, and construction hazards. The full potential of prefabricated construction is yet to be realized in part due to most advancements being focused on its superstructure. The development of prefabricated substructures for lightweight buildings needs to consider the susceptibility to damage induced by the shrink‐swell movement of expansive soils causing significant global financial losses. Prefabricated substructures should have robust connections in discontinued regions to transfer forces and moments. Due to these issues, the aim of this study is to develop a connection for prefabricated raft substructures of single‐detached dwellings on expansive soils using a combined soil‐structure contact analysis and strut‐and‐tie model approach. The developed substructure system was validated using experiments and further investigated through numerical simulations. The developed prefabricated connection was observed to have satisfactory performance, potentially overcoming most construction limitations of conventional monolithic cast‐in‐place raft substructures, such as faster, safer, and more sustainable construction, while providing comparable strength and serviceability.
Experimental and computational investigations on fire resistance of GFRP composite for building façade
Publisher: Elsevier BV
Date: 06-2014
Comparison of wind uplift load sharing for Australian truss- and pitch-framed roof structures
Publisher: Elsevier BV
Date: 09-2020
Prefabrication of substructures for single-detached dwellings on reactive soils: a review of existing systems and design challenges
Publisher: Informa UK Limited
Date: 03-07-2019
Effect of Textile Architecture on Energy Absorption of Woven Fabrics Subjected to Ballistic Impact
Publisher: Trans Tech Publications, Ltd.
Date: 05-2014
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMM.553.757
Abstract: Woven fabrics are widely used in various protective applications. The effects of different woven architectures (such as plain, basket, twill and satin) on impact resistance performance have not been adequately studied. In this work, high-speed impact testing on single layer plain weave structures has been carried out using a gas gun experimental setup. Ballistic resistance performance of the woven fabric is evaluated based on the resultant velocity of the projectile, as well as the post-mortem failure analysis. Finite element computational models are presented in this research, thereby providing predictive capability for the manufacturer and designer in order to minimise field testing, as well as shedding light on to the damage mechanisms of composite fabrics subjected to ballistic impact. The numerical model is validated with the experimental results in terms of dissipated energy and resultant velocity. Numerical investigation is conducted on other woven structures of identical areal density for comparison, revealing the importance of fabric architecture. The influences of yarn-yarn and yarn-projectile friction properties on the ballistic performance of various textile structures are also presented.
Mesoscale modelling of concrete – a review of geometry generation, placing algorithms, constitutive relations and applications
Publisher: Elsevier BV
Date: 05-2020
The effects of surfactants on properties of lightweight concrete foam
Publisher: Thomas Telford Ltd.
Date: 02-2020
Abstract: Lightweight concrete foam is mainly used as a filling for sandwich panels for insulation of buildings. Surfactants are chemical admixtures that play an important role in stabilising the air pores in fresh concrete foam before stiffening. This study investigates the effects of surfactants on the microstructure and pore characteristics of concrete foam analysed by X-ray microtomography. The formation of larger pores due to poor stability of bubbles in the concrete foam is directly related to a substantial reduction of compressive strength. Anionic (negatively charged) surfactants produce a stable aqueous foam. However, in the presence of cement particles, the majority of anionic surfactants adsorb on positively charged sites of cement particles. As the result of considerable migration of surfactants from the air–liquid interface of bubbles, the concrete foam is destabilised. Therefore, a surfactant that can generate a stable foam (with water only) may not be able to generate a stable concrete foam. A combination of an anionic and a non-ionic (neutral) surfactant reduced the maximum pore diameter from 1·84 mm to 1·49 mm and increased strength by 25% compared to the concrete foam stabilised by anionic surfactants alone.
How does aluminium foaming agent impact the geopolymer formation mechanism?
Publisher: Elsevier BV
Date: 07-2017
The influence of ambient environmental conditions in detecting bridge concrete deck delamination using infrared thermography (IRT)
Publisher: Hindawi Limited
Date: 17-01-2020
DOI: 10.1002/STC.2506
A framework for a microscale flood damage assessment and visualization for a building using BIM–GIS integration
Publisher: Informa UK Limited
Date: 24-04-2015
Prefabricated Composite Steel-Timber Stiffened Wall Systems with Post-Tensioning: Structural Analysis and Experimental Investigation under Vertical Axial Load
Publisher: American Society of Civil Engineers (ASCE)
Date: 02-2021
Investigation of strength and hydration characteristics in nano-silica incorporated cement paste
Publisher: Elsevier BV
Date: 07-2017
Performance of reinforced concrete frames using force and displacement based seismic assessment methods
Publisher: Elsevier BV
Date: 04-2000
Effect of fire-retardant ceram powder on the properties of phenolic-based GFRP composites
Publisher: Elsevier BV
Date: 12-2018
Understanding failure and stress-strain behavior of very-high strength concrete (> 100 MPa) confined by lateral reinforcement
Publisher: Elsevier BV
Date: 11-2018
Relationship of Stiffness-Based Indentation Properties Using Continuous-Stiffness-Measurement Method
Publisher: MDPI AG
Date: 24-12-2019
DOI: 10.3390/MA13010097
Abstract: The determination of elastic modulus (E) and hardness (H) relies on the accuracy of the contact area under the indenter tip, but this parameter cannot be explicitly measured during the nanoindentation process. This work presents a new approach that can derive the elastic modulus (E) and contact depth (hc) based on measured experiment stiffness using the continuous-stiffness-measurement (CSM) method. To achieve this, an inverse algorithm is proposed by incorporating a set of stiffness-based relationship functions that are derived from combining the dimensional analysis approach and computational simulation. This proposed solution considers both the sink-in and pile-up contact profiles therefore, it provides a more accurate solution when compared to a conventional method that only considers the sink-in contact profile. While the proposed solution is sensitive to Poisson’s ratio (ν) and the equivalent indentation conical angle (θ), it is not affected by material plasticity, including yield strength (σy) and work hardening (n) for the investigated range of 0.001 σy/E 0.5. The proposed stiffness-based approach can be used to consistently derive elastic modulus and hardness by using stiffness and the load-and-unload curve measured by the continuous-stiffness-measurement (CSM) method.
Influence of Building Shape on Wind-Driven Rain Exposure in Tall Buildings
Publisher: American Society of Civil Engineers (ASCE)
Date: 09-2021
Cohesive-strength homogenisation model of porous and non-porous materials using linear comparison composites and application
Publisher: Springer Science and Business Media LLC
Date: 25-02-2020
DOI: 10.1038/S41598-020-60152-W
Abstract: An estimation of the strength of composite materials with different strength behaviours of the matrix and inclusion is of great interest in science and engineering disciplines. Linear comparison composite (LCC) is an approach introduced for estimating the macroscopic strength of matrix-inclusion composites. The LCC approach has however not been expanded to model non-porous composites. Therefore, this paper is to fill this gap by developing a cohesive-strength method for modelling frictional composite materials, which can be porous and non-porous, using the LCC approach. The developed cohesive-strength homogenisation model represents the matrix and inclusion as a two-phase composite containing solids and pores. The model is then implemented in a multiscaling model in which porous cohesive-frictional solids intermix with each other at different scale levels classified as micro, meso and macro. The developed model satisfies an upscaling scheme and is suitable for investigating the effects of the microstructure, the composition, and the interface condition of the materials at micro scales on the macroscopic strength of the composites. To further demonstrate the application of the developed cohesive-strength homogenisation model, the cohesive-strength properties of very high strength concrete are determined using instrumented indentation, nonlinear limit analysis and second-order cone programming to obtain material properties at different scale levels.
Stress-strain relationship for very-high strength concrete (> 100 MPa) confined by lateral reinforcement
Publisher: Elsevier BV
Date: 12-2018
Measurement and analysis of electromagnetic fields from trams, trains and hybrid cars
Publisher: Oxford University Press (OUP)
Date: 16-06-2010
DOI: 10.1093/RPD/NCQ168
Abstract: Electricity is used substantially and sources of electric and magnetic fields are, unavoidably, everywhere. The transportation system is a source of these fields, to which a large proportion of the population is exposed. Hence, investigation of the effects of long-term exposure of the general public to low-frequency electromagnetic fields caused by the transportation system is critically important. In this study, measurements of electric and magnetic fields emitted from Australian trams, trains and hybrid cars were investigated. These measurements were carried out under different conditions, locations, and are summarised in this article. A few of the measured electric and magnetic field strengths were significantly lower than those found in prior studies. These results seem to be compatible with the evidence of the laboratory studies on the biological effects that are found in the literature, although they are far lower than international levels, such as those set up in the International Commission on Non-Ionising Radiation Protection guidelines.
A rate dependent stress-strain relationship model for normal, high and ultra-high strength concrete
Publisher: SAGE Publications
Date: 09-2013
DOI: 10.1260/2041-4196.4.3.451
Abstract: High and ultra-high strength concrete are becoming popular for many applications, including critical infrastructure subjected to high strain rate loading such as blast and impact. A strain rate dependent material model that is applicable to a range of strengths, varying from normal strength to ultra-high strength concrete, is presented in this paper. The results from a comprehensive experimental study conducted to investigate the strength and deformation capacity of concrete cylinders under high-velocity impact loading using a Split Hopkinson Pressure Bar (SHPB) test setup is reported. Unconfined 50 mm diameter concrete cylinders with compressive strengths varying from 32 MPa (4640 psi) to 160 MPa (23 200 psi) were tested to derive the dynamic properties of concrete at strain rates up to 300 s −1 . The SHPB test data were analysed to obtain the stress-strain relationships and strength dynamic increase factors (DIFs) for these concrete specimens under dynamic axial compression.
Numerical simulation of structural responses to a far-field explosion
Publisher: Informa UK Limited
Date: 02-09-2015
Airborne and impact sound performance of modern lightweight timber buildings in the Australian construction industry
Publisher: Elsevier BV
Date: 12-2021
Assessment of shear strength of reinforced concrete beams without shear reinforcement: A comparative study between codes of practice and artificial neural network
Publisher: Elsevier BV
Date: 06-2022
A review and comparison of design methods for raft substructures on expansive soils
Publisher: Elsevier BV
Date: 09-2021
Regulating the chemical foaming reaction to control the porosity of geopolymer foams
Publisher: Elsevier BV
Date: 04-2017
New Normal Remote Communication for Collaboration
Publisher: Springer Nature Singapore
Date: 29-09-2022
Study of Strain-Hardening Behaviour of Fibre-Reinforced Alkali-Activated Fly Ash Cement
Publisher: MDPI AG
Date: 03-12-2019
DOI: 10.3390/MA12234015
Abstract: This paper presents a study of parameters affecting the fibre pull out capacity and strain-hardening behaviour of fibre-reinforced alkali-activated cement composite (AAC). Fly ash is a common aluminosilicate source in AAC and was used in this study to create fly ash based AAC. Based on a numerical study using Taguchi’s design of experiment (DOE) approach, the effect of parameters on the fibre pull out capacity was identified. The fibre pull out force between the AAC matrix and the fibre depends greatly on the fibre diameter and embedded length. The fibre pull out test was conducted on alkali-activated cement with a capacity in a range of 0.8 to 1.0 MPa. The strain-hardening behaviour of alkali-activated cement was determined based on its compressive and flexural strengths. While achieving the strain-hardening behaviour of the AAC composite, the compressive strength decreases, and fine materials in the composite contribute to decreasing in the flexural strength and strain capacity. The composite critical energy release rate in AAC matrix was determined to be approximately 0.01 kJ/m 2 based on a nanoindentation approach. The results of the flexural performance indicate that the critical energy release rate of alkali-activated cement matrix should be less than 0.01 kJ/m 2 to achieve the strain-hardening behaviour.
Use of fluid structure interaction technique for flash flood impact assessment of structural components
Publisher: Wiley
Date: 09-12-2019
DOI: 10.1111/JFR3.12581
Softening of Normal Strength and High-Strength Concrete Frames
Publisher: SAGE Publications
Date: 04-2000
Abstract: In the 21st century, computing facilities will make it possible to opt on a regular basis for more accurate rigorous methods of analysis. A rigorous collapse load analysis requires a knowledge of the behaviour of plastic hinges up to advanced curvatures. Concrete sections characteristically soften, that is the bending moment capacity decreases with increasing curvatures after the end of the plastic plateau while steel sections undergo a hardening phase. Consideration of softening is essential in a rational analysis. In this paper, the important aspects of softening of concrete frame structures are reviewed. High-strength concrete (f'c MPa) is a more brittle construction material than normal strength concrete. High-strength concrete sections show a steeper softening slope when compared with similar normal strength concrete sections. An ex le is presented to demonstrate that a HSC frame structure with steeper softening slopes will have a lower collapse load.
Microstructural study of environmentally friendly boroaluminosilicate geopolymers
Publisher: Elsevier BV
Date: 07-2018
Plastic deformation of polyurea coated composite aluminium plates subjected to low velocity impact
Publisher: Elsevier BV
Date: 04-2014
Pedestrian Wind Comfort Study Using Computational Fluid Dynamic (CFD) Simulation
Publisher: Springer Singapore
Date: 07-08-2019
Multiscale modelling framework for elasticity of ultra high strength concrete using nano/microscale characterization and finite element representative volume element analysis
Publisher: Elsevier BV
Date: 04-2022
Development and performance evaluation of large-scale auxetic protective systems for localised impulsive loads
Publisher: SAGE Publications
Date: 24-06-2019
Abstract: Cellular core structures with a negative Poisson’s ratio, also known as auxetic core structures, are gaining attention due to their unique performance in sandwich panel systems for protecting critical infrastructures and military vehicles that are at high risk of blast and impact loads due to accidental and deliberate events. To help develop a high-performance protective system, this article outlines the performance evaluation of five different auxetic cell configurations based on a quantitative/qualitative review of an experimental load–deformation relationship of three-dimensional-printed auxetic panels from nylon plastics and the overall performance evaluation of metallic re-entrant honeycomb core sandwich panels as one type of lightweight protective system under static and dynamic loads via experimental testing and numerical simulations. The re-entrant honeycomb design displayed the most consistent auxetic behaviour. Quasi-static compression and drop hammer impact tests were performed using the proposed full-scale sandwich panel design with two different configurations as a protective system for concrete wall structures in combination with plastic face plates. The effect of the internal angle of the re-entrant honeycomb design and the effect of the core material under static and dynamic loads were evaluated using full-scale sandwich panels. Furthermore, two separate materials – acrylonitrile butadiene styrene and low-density polyethylene – were used as face plates, and the low-density polyethylene was effective for lightweight and smooth load transferring and distribution into the auxetic core. Auxetic panel deformation under static and dynamic load was examined using a normal speed camera and high-speed video recording data and all auxetic panels indicated excellent systematic crushing behaviour with drawing materials into the load path to effectively resist the impact load. Numerical simulations were performed using LS-DYNA and indicated good agreement with the experimental results. Finally, protective systems utilising sandwich panels with a re-entrant honeycomb core indicated strong potential for the development of high-performance lightweight impact-resistant protective systems.
Estimating early-age in situ strength development of concrete slabs
Publisher: Elsevier BV
Date: 04-2012
Effect of roof to wall connection stiffness variations on the load sharing and hold-down forces of Australian timber-framed houses
Publisher: Elsevier BV
Date: 10-2020
Protective structures research at the university of Melbourne
Publisher: Informa UK Limited
Date: 2012
Treated Municipal Solid Waste (Biomass) Based Concrete Properties—Part I: State of the Art
Publisher: Springer International Publishing
Date: 2021
Treated Municipal Solid Waste (Biomass) Based Concrete Properties—Part II: Experimental Program
Publisher: Springer International Publishing
Date: 2021
High-strength rice husk ash concrete incorporating quarry dust as a partial substitute for sand
Publisher: Elsevier BV
Date: 07-2011
Financial assessment of manufacturing recycled aggregate concrete in ready-mix concrete plants
Publisher: Elsevier BV
Date: 05-2016
Embodied carbon analysis and benchmarking emissions of high and ultra-high strength concrete using machine learning algorithms
Publisher: Elsevier BV
Date: 07-2020
Design and Development of Weatherproof Seals for Prefabricated Construction: A Methodological Approach
Publisher: MDPI AG
Date: 24-08-2018
Abstract: Satisfactory weatherproofing of buildings is vital to maximise their design life and performance which requires the careful design of external sealing technologies. Systems commonly available have served well in conventional construction however with many prefabricated systems emerging in the building industry new and novel means of weatherproofing between panels and modules need to be developed purpose specific to this application. This paper presents a holistic and fundamental methodological approach to Design and Development of waterproof seals and has been applied specific for prefabricated panelised and modular systems. Two purpose specific weatherproof seals are finally presented. Flow charts of the overview of the suggested methodological approach and the processes within which include DfMA that have been incorporated into understanding and developing seals for this practical application. These strategies have enabled a resourceful and holistic set of processes that can be adapted and used for similar forms of product research in new and developing areas of construction such as prefabrication. The design and development process is thoroughly investigated and has resulted in an exploration of the technical challenges and potential solutions which take into consideration factors from installation limitations to building tolerances.
Multi-Criteria Analysis of a Developed Prefabricated Footing System on Reactive Soil Foundation
Publisher: MDPI AG
Date: 10-11-2021
DOI: 10.3390/EN14227515
Abstract: The need for advancements in residential construction and the hazard induced by the shrink–swell reactive soil movement prompted the development of the prefabricated footing system of this study, which was assessed and compared to a conventional waffle raft using a multi-criteria analysis. The assessment evaluates the structural performance, cost efficiency, and sustainability using finite element modelling, life cycle cost analysis, and life cycle assessment, respectively. The structural performance of the developed prefabricated system was found to have reduced the deformation and cracking by approximately 40%. However, the cost, GHG emission, and embodied energy were higher in the prefabricated footing system due to the greater required amount of concrete and steel than that of the waffle raft. The cost difference between the two systems can be reduced to as low as 6% when prefabricated systems were installed in a highly reactive sites with large floor areas. The life cycle assessment further observed that the prefabricated footing systems consume up to 21% more energy and up to 18% more GHG emissions. These can significantly be compensated by reusing the developed prefabricated footing system, decreasing the GHG emission and energy consumption by 75–77% and 55–59% with respect to that of the waffle raft.
An Introduction to High Performance Graphene Concrete
Publisher: EJSE International
Date: 28-10-2022
DOI: 10.56748/EJSE.223553
Abstract: Developments in nanomaterial technology have generated a strong research interest in the construction industry aiming at enhancing the properties of concrete. Many studies have explored the use of engineered nanomaterial such as nano-silica, carbon nanotubes (CNT) and nanofibers in cementitious composites. Recently, nanomaterial studies have focused on Graphene and Graphene Oxide (GO). Graphene is the single atomic layer thick two-dimensional form of graphite and GO is the oxidized form of graphene which is synthesized by oxidation of graphite. Investigations have demonstrated that the use of GO in cementitious composites can enhance their performance. This paper outlines the development of a high-performance graphene-based concrete. Moreover, the paper presents a brief review of previous studies conducted on GO induced cementitious composites and remarkable performance enhancement enabled by GO. The findings of this study contribute towards establishing how GO can be adopted as a nanomaterial additive for concrete.
Standardized Interpretation of Chest Radiographs in Cases of Pediatric Pneumonia From the PERCH Study
Publisher: Oxford University Press (OUP)
Date: 27-05-2017
DOI: 10.1093/CID/CIX082
FINITE ELEMENT MODELLING OF 2-SPAN CONTINUOUS RC BEAMS SHEAR STRENGTHENED AND SHEAR REPAIRED WITH CFRP STRIPS
Publisher: Penerbit UTM Press
Date: 18-04-2016
DOI: 10.11113/JT.V78.8353
Abstract: Strengthening of reinforced concrete (RC) continuous beams in shear have received very little attention among researchers even though most existing structures are in the form of continuous condition such as part of a floor-beam system. Therefore, in order to address the gap, a study on shear strengthening and shear repair of reinforced concrete continuous beam using Carbon Fibre Reinforced Polymer (CFRP) strips was conducted [15]. The validation of the experimental results was conducted with a simulation study using a finite element software ATENA v4 [16]. The research variables were number of layers of CFRP strips (one or two layers), wrapping schemes (four sides or three sides) and orientation of CFRP strips (0/90 or 45/135 degree’s). From the analysis of the finite element results, ATENA shows it has successfully simulated the shear behaviour of strengthened and repaired of 2-span continuous RC beams externally bonded by CFRP strips.
Flexural behavior of geopolymer-concrete beams longitudinally reinforced with GFRP and steel hybrid reinforcements
Publisher: Elsevier BV
Date: 03-2019
Structural performance of FCS wall subjected to axial load
Publisher: Elsevier BV
Date: 03-2017
The Role of Physiological Loading on Bone Fracture Healing Under Ilizarov Circular Fixator: The Effects of Load Duration and Loading Frequency
Publisher: Springer International Publishing
Date: 2020
Axial performance of hollow concrete columns reinforced with GFRP composite bars with different reinforcement ratios
Publisher: Elsevier BV
Date: 04-2019
Instability Analysis of Normal- and High-Strength Reinforced-Concrete Walls
Publisher: American Society of Civil Engineers (ASCE)
Date: 05-1997
Bond Strength of Reinforcement in High-Strength Concrete
Publisher: SAGE Publications
Date: 07-2000
Abstract: The use of high-strength concrete is becoming popular around the world. The american code, ACI 318–95 is used in many countries to calculate the development length of deformed bars in tension. However, current design provisions of ACI 318–95 are based on empirical relationships developed from tests on normal strength concrete. The results of a series of tests on high-strength concrete, reported in the literature, from six research studies are used to review the existing recommendations in ACI 318–95 for design of splices and anchorage of reinforcement. It is shown that ACI 318–95 equations may be unconservative for some cases beyond 62 MPa (9 ksi).
Fiber-Reinforced Polymer Bars for Concrete Structures: State-of-the-Practice in Australia
Publisher: American Society of Civil Engineers (ASCE)
Date: 02-2021
The Role of Locking Plate Stiffness in Bone Fracture Healing Stabilized by Far Cortical Locking Technique
Publisher: World Scientific Pub Co Pte Lt
Date: 24-05-2018
DOI: 10.1142/S021987621850024X
Abstract: The locking plate fixations have been developed to enhance bone healing by wide bridging of the fracture and allowing some level of interfragmentary movement (IFM) at the fracture site. However, the IFM induced by conventional locking plate constructs is not uniform at the fracture site and so result in asymmetric callus formation, and ultimately delayed healing. The far cortical locking technique has been recently innovated to address this issue by inducing a uniform IFM. However, the far cortical locking technique is still in its infancy and more research efforts are required before its practical clinical application. Using the theory of porous media and computational methods, this study investigated the effectiveness of far cortical locking technique in presence of different mechanical stiffness of locking plate. The research outcomes indicate that the application of far cortical looking technique enhances IFM at near cortex, and so reduce the difference of IFM between near and far cortex. Further, it shows that, under far cortical locking technique, the bending stiffness of a locking plate plays an important role in bone healing. The use of a stiffer locking plate together with far cortical locking screws encourages more uniform tissue development across the fracture gap. The current research underlines the importance of the optimal selection of plate stiffness for application of far cortical locking technique.
Experiences of Deploying an Indoor Building Sensor Network
Publisher: IEEE
Date: 06-2009
Comparison of optimal oriented façade integrated solar cooling systems in Australian climate zones
Publisher: Elsevier BV
Date: 03-2020
Structural behaviour of prefabricated stressed-skin engineered timber composite flooring systems
Publisher: Elsevier BV
Date: 12-2019
Development of cross laminated timber-cold-formed steel composite beam for floor system to sustainable modular building construction
Publisher: Elsevier BV
Date: 08-2021
Shear Rehabilitation of RC Deep Beams using NSM CFRP Anchor Bars
Publisher: EDP Sciences
Date: 2017
Simulating reactive soil and substructure interaction using a simplified hydro-mechanical finite element model dependent on soil saturation, suction and moisture-swelling relationship
Publisher: Elsevier BV
Date: 03-2020
Aggregate Geometry Generation Method Using a Structured Light 3D Scanner, Spherical Harmonics–Based Geometry Reconstruction, and Placing Algorithms for Mesoscale Modeling of Concrete
Publisher: American Society of Civil Engineers (ASCE)
Date: 08-2021
A hybrid precast concrete stiffened wall substructure for residential construction on expansive soils
Publisher: Elsevier BV
Date: 06-2022
Microstructural Investigation of High-Volume Fly Ash Composites Containing Nano-Calcium Silicate Hydrate Crystals
Publisher: American Society of Civil Engineers (ASCE)
Date: 12-2021
An Investigation of Nanomechanical Properties of Materials using Nanoindentation and Artificial Neural Network
Publisher: Springer Science and Business Media LLC
Date: 12-09-2019
DOI: 10.1038/S41598-019-49780-Z
Abstract: Mechanical properties of materials can be derived from the force-displacement relationship through instrumented indentation tests. Complications arise when establishing the full elastic-plastic stress-strain relationship as the accuracy depends on how the material’s and indenter’s parameters are incorporated. For instance, the effect of the material work-hardening phenomenon such as the pile-up and sink-in effect cannot be accounted for with simplified analytical indentation solutions. Due to this limitation, this paper proposes a new inverse analysis approach based on dimensional functions analysis and artificial neural networks (ANNs). A database of the dimensional functions relating stress and strain parameters of materials has been developed. The database covers a wide range of engineering materials that have the yield strength-to-modulus ratio ( σ y /E) between 0.001 to 0.5, the work-hardening power ( n ) between 0–0.5, Poisson’s ratio ( v ) between 0.15–0.45, and the indentation angle ( θ ) between 65–80 degrees. The proposed algorithm enables determining the nanomechanical stress-strain parameters using the indentation force-displacement relationship, and is applicable to any materials that the properties are within the database range. The obtained results are validated with the conventional test results of steel and aluminum s les. To further demonstrate the application of the proposed algorithm, the nanomechanical stress-strain parameters of ordinary Portland cement phases were determined.
Optimal time-dependent levels of weight-bearing for bone fracture healing under Ilizarov circular fixators
Publisher: Elsevier BV
Date: 09-2021
Aggregate-Dependent Approach to Formulate and Predict Properties of High-Strength and Very-High-Strength Concrete
Publisher: American Society of Civil Engineers (ASCE)
Date: 04-2020
Stability Analysis of Softening Frames
Publisher: American Society of Civil Engineers (ASCE)
Date: 05-1988
Concrete high-rise buildings subjected to blast loading and aircraft impact
Publisher: International Association for Bridge and Structural Engineering (IABSE)
Date: 2002
Life cycle performance of Cross Laminated Timber mid-rise residential buildings in Australia
Publisher: Elsevier BV
Date: 09-2020
Structural Health Monitoring of Bridges Using Advanced Non-destructive Testing Technique
Publisher: Springer Singapore
Date: 04-09-2020
Behavior of ultrahigh-strength prestressed concrete panels subjected to blast loading
Publisher: American Society of Civil Engineers (ASCE)
Date: 11-2007
Sustainable Shear Behaviour of 2-Span Continuous Reinforced Concrete T-Beams with CFRP Strips
Publisher: EDP Sciences
Date: 2017
A Slack approach to optimised modularisation of prefabricated structures using a multi-variable modularisation index
Publisher: Elsevier BV
Date: 10-2021
Residual stress-strain relationship for the biochar-based mortar after exposure to elevated temperature
Publisher: Elsevier BV
Date: 06-2021
Condition assessment of concrete by hybrid non-destructive tests
Publisher: Springer Science and Business Media LLC
Date: 21-05-2019
Cementless building materials made from recycled plastic and sand/glass: a review and road map for the future
Publisher: EJSE International
Date: 28-10-2022
DOI: 10.56748/EJSE.223773
Abstract: Plastic and glass can be sorted using machines and recycled into new plastic and glass as opposed to producing them from raw materials. However, contaminated plastic and glass, as well as certain types of plastic and glass, cannot be recycled using traditional methods and must be disposed of in a landfill. Researchers have been looking into these and have tried a variety of solutions to convert this waste into functional products. The development of composite construction materials based on these two materials was identified as a worthy solution. On the other hand, carbon dioxide is emitted during the cement manufacturing process and the use of that cement in the production of construction materials contributes 7% of total global greenhouse gas emissions. Hence, plastic sand/glass composite is environmentally friendly in two ways. It reduces landfill while also replacing the equivalent concrete product, lowering CO2 emissions. This paper examines the literature on the development of such materials, including technology, challenges, quality, and properties. The development of a glass/sand composite to use as a material in the commercial scale production of building materials such as roof and pavement tiles is described based on studies that are available.
Quantification of the Blast-Loading Parameters of Large-Scale Explosions
Publisher: American Society of Civil Engineers (ASCE)
Date: 10-2015
Innovative Flexible Structural System Using Prefabricated Modules
Publisher: American Society of Civil Engineers (ASCE)
Date: 12-2016
Manufacturing, Modeling, Implementation and Evaluation of a Weatherproof Seal for Prefabricated Construction
Publisher: MDPI AG
Date: 31-08-2018
Abstract: Prefabricated forms of construction have led to the rapid onsite assembly of buildings however there are still on-site tasks and processes which can be reevaluated and redone specifically in keeping with the principles of prefabrication instead being adapted to fit its purpose. One such process is that of waterproofing between prefabricated panels and modules which come from the factory fully complete façade and all. Conventional means of waterproofing can be used however it results in more work done on site, potential delays and generally requires access from the external face of the building. This paper presents the Modelling, Implementation and Evaluation of purpose developed weatherproof seals specific for Prefabricated Construction. An overview is provided of the entire development process and specific focus is given to the modeling using finite element analysis (FEA) computer simulations, manufacturing and testing which then resulted in the implementation in a prefabricated panelised building which is used as a case study and the means of further evaluation. These strategies have enabled an efficient and robust prefabricated waterproofing solution specific for this form of construction to be understood and implemented. The resulting case study has successfully verified the time and cost savings when compared to conventional techniques whilst still providing a durable and effective weatherproof seal for prefabricated panelised and modular systems.
Computational simulation of mechanical microenvironment of early stage of bone healing under locking compression plate with dynamic locking screws
Publisher: Trans Tech Publications, Ltd.
Date: 05-2014
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMM.553.281
Abstract: It is well known that bone healing outcomes highly depend on the mechanical microenvironment of the fracture site, and a certain degree of interfragmentary movement (IFM) is essential for indirect (i.e. natural) bone healing. The application of locking compression plate (LCP) internal fixation in the treatment of bone fracture is a common practice which leads to early mobility and full function of the fractured extremity. However should the fixation configuration be too stiff, it might result in delayed healing or asymmetric tissue development across the fracture site due to the fact that IFM in near cortex area is too small to promote healing. Dynamic locking screw (DLS) has been recently designed to tackle this problem by reducing the stiffness of LCP fixation. However, the actual mechano-regulation mechanisms in which DLS uses to regulate the healing process are still not fully understood. The objective of this paper is to develop a computational model to understand the change of mechanical microenvironment of fracture site under LCP with dynamic locking screw in comparison to standard locking screw, and how this change could potentially regulate tissue development within the fracture callus during the healing process.Keywords: bone healing, locking compression plate, dynamic locking screw, finite element modelling
Detecting structural damage to bridge girders using radar interferometry and computational modelling
Publisher: Hindawi Limited
Date: 02-02-2017
DOI: 10.1002/STC.1985
Elastic‐Plastic‐Softening Analysis of Plane Frames
Publisher: American Society of Civil Engineers (ASCE)
Date: 04-1985
SHEAR MECHANISM AND SHEAR STRENGTH PREDICTION OF REINFORCED CONCRETE T-BEAMS
Publisher: Penerbit UTM Press
Date: 18-04-2016
DOI: 10.11113/JT.V78.8373
Abstract: Shear failure in reinforced concrete beams are sudden failures and should be avoided at all times. However, the shear behaviour of a reinforced concrete beam is a complex mechanism and requires in-depth study. To understand the shear mechanism, two (2) simply supported reinforced concrete T-beams, BEAM1 and BEAM2 were tested until failure subjected to a 4-point bending test. Both beams were designed to the recommendations and specifications of two (2) established design codes by ACI318-08 and Eurocode2 (EC2). The study comprises of two reinforced concrete T-beams having similar variables and parameters with longitudinal reinforcement of ρ = 2.15% and shear span-to-effective depth ratio (av/d) of 3.5. Shear reinforcement or stirrups has been added to the specimen and its spacing of stirrups has been provided with the provisions of the codes. The findings from the study indicate that ACI318-08 and EC2 design codes shows significant differences in determining its shear strength capacity Vn and concrete shear resistance Vcof the T-beams. However, both results were less conservative in its prediction when compared to the experimental results.
Incorporation of Glass and Plastic Waste into Alkali-Activated Mill Residue Bricks
Publisher: MDPI AG
Date: 09-12-2022
DOI: 10.3390/SU142416533
Abstract: Recycling of glass and plastic waste has been increasingly attracting the attention of researchers worldwide. Relevant studies have been conducted to prove the feasibility of incorporating glass and plastic wastes into cement-based concrete and fired bricks. However, the high embedded energy and large carbon footprint of these materials have hindered the achievement of sustainable goals. Hence, this study attempts to ersify the recycling pathways for glass and plastic waste via a low carbon route. The brick clay mill residue has been used as a precursor to prepare alkali-activated bricks containing plastic and glass fines with a specific curing regime. The compressive strength, water absorption, linear shrinkage, and microstructure were investigated with varied content of glass and plastic content. The results showed that the maximum acceptable ratio of glass fines was around 55 wt.% for s les with the glass waste solely, achieving the compressive strength of 22 MPa. While foror s les incorporating plastic (PET) waste only, the maximum allowable ratio was only 2 wt.%, because excessive plastic resulted in the spalling of the s le surface. When both the glass and plastic waste were added to the s les, the maximum substitution ratio was 25 wt.% of glass and 2 wt.% of plastics. Scanning Electron Microscope images indicates that the plastic particles had more adverse effects on the microstructure of the alkali-activated s les than the glass particles. There was little or no bonding between plastic waste and alkali-activated mill residues. In contrast, the bonding between glass particles and alkali-activated mill residues was captured. The effect of the addition of glass and plastic s les on the durability of alkali-activated mill residue material needs to be further investigated, such as dimension stability, resistance to salt attack, freeze and thaw, and so on.
Influence of ambient temperature on early age concrete behaviour of anchorage zones
Publisher: Elsevier BV
Date: 02-2014
Prediction of airblast loads in complex environments using artificial neural networks
Publisher: WIT Press
Date: 26-06-2006
DOI: 10.2495/SU060271
Section classifications for cold-formed channel steel
Publisher: Thomas Telford Ltd.
Date: 07-2015
Abstract: The inelastic reserve capacity, which is the additional capacity of a member beyond the first yielding, is very important for limit-state design of frame structures. The aim of this work was to investigate the inelastic bending capacity of cold-formed channel sections according to European standards and to propose revisions to current design rules. An extensive experimental and analytical analysis of 42 cold-formed channel sections was conducted. Material properties of the tested sections were examined using tension tests on metal coupons. The sections were cold-formed from G450 steel with a nominal thicknesses of 1·6 mm, and varying theoretical buckling stresses ranging between elastic and seven times the yield stress. The results from the pure bending experimental investigations and the European design standards for steel structures were compared. It is concluded that the section classifications defined in Eurocode 3 are not accurate for cold-formed channel sections. Therefore, modifications to the section classifications that have been derived for hot-rolled sections are required in the case of cold-formed sections to maintain accuracy (based on the presented test series). Design rules are developed to account for such behaviour.
Influences of the volume fraction and shape of steel fibers on fiber-reinforced concrete subjected to dynamic loading – A review
Publisher: Elsevier BV
Date: 10-2016
Effects of dynamic loading on fracture healing under different locking compression plate configurations: A finite element study
Publisher: Elsevier BV
Date: 06-2019
DOI: 10.1016/J.JMBBM.2019.03.004
Abstract: The design of patient specific weight-bearing exercises after the surgical implementation of internal fixations is of critical importance for bone fracture healing. The purpose of this study is to theoretically investigate the effects of physiologically relevant dynamic loading on early stage of fracture healing under different locking compression plate (LCP) configurations. The finite element results show that dynamic loading enhanced transport of bone cells and growth factors in the fracture callus is much dependent on the flexibility of LCP. In comparison to free diffusion, a relatively flexible LCP together with dynamic loading could significantly enhance solute transport in callus. For ex le, a flexible LCP achieved by increasing WL (Working Length) and BPD (Bone Plate Distance) (e.g. WL=100 mm and BPD=2 mm) together with a 5-h 150 N@1 Hz dynamic loading could increase the uptake of chondrocytes by around 280% compared to free diffusion, osteoblasts by around 180%, osteogenic growth factors by around 120% and chondrogenic growth factors by around 220%. In addition, dynamic loading enhanced transport of cells and growth factors under LCP is spatially dependent with a relatively higher enhancement in far cortex zone than that in near cortex zone. The outcomes from present study could potentially assist orthopaedic surgeons to determine optimal loading regimes with consideration of patient specific LCP configurations.
The Effects of Dynamic Loading on Bone Fracture Healing under Ilizarov Circular Fixators
Publisher: ASME International
Date: 25-03-2019
DOI: 10.1115/1.4043037
Abstract: Early weight bearing appears to enhance bone fracture healing under Ilizarov circular fixators (ICFs). However, the role of early weight bearing in the healing process remains unclear. This study aims to provide insights into the effects of early weight bearing on healing of bone fractures stabilized with ICFs, with the aid of mathematical modeling. A computational model of fracture site was developed using poro-elastic formulation to simulate the transport of mesenchymal stem cells (MSCs), fibroblasts, chondrocytes, osteoblasts, osteogenic growth factor (OGF), and chondrogenic growth factor (CGF) and MSC differentiation during the early stage of healing, under various combinations of fracture gap sizes (GS), ICF wire pretension forces, and axial loads. 1 h of physiologically relevant cyclic axial loading followed by 23 h of rest in the post-inflammation phase (i.e., callus with granulation tissue) was simulated. The results show that physiologically relevant dynamic loading could significantly enhance cell and growth factor concentrations in the fracture site in a time and spatially dependent manner. 1 h cyclic loading (axial load with litude, PA, of 200 N at 1 Hz) increased the content of chondrocytes up to 37% (in all zones of callus), CGF up to 28% (in endosteal and periosteal callus) and OGF up to 50% (in endosteal and cortical callus) by the end of the 24 h period simulated. This suggests that the synergistic effect of dynamic loading-induced advective transport and mechanical stimuli due to early weight bearing is likely to enhance secondary healing. Furthermore, the study suggests that relatively higher PA values or lower ICF wire pretension forces or smaller GS could result in increased chondrocyte and GF content within the callus.
Role of chemical and mechanical stimuli in mediating bone fracture healing
Publisher: Wiley
Date: 25-07-2012
DOI: 10.1111/J.1440-1681.2011.05652.X
Abstract: Bone is a remarkable living tissue that provides a framework for animal body support and motion. However, under excessive loads and deformations, bone is prone is to damage through fracture. Furthermore, once the bone is weakened by osteoporosis, bone fracture can occur even after only minimal trauma. Various techniques have been developed to treat bone fractures. Successful treatment outcomes depend on a fundamental understanding of the biochemical and biomechanical environments of the fracture site. Various cell types (e.g. mesenchymal stem cells, chondrocytes, osteoblasts and osteoclasts) within the fracture site tightly control the healing process by responding to the chemical and mechanical microenvironment. However, these mechanochemical regulatory mechanisms remain poorly understood at the system level owing to the large range of variables, such as age, sex and disease-associated material properties of the tissue. Computational modelling can play an important role in unravelling this complexity by combining mechanochemical interactions, revealing the dominant controlling processes and optimizing system behaviour, thereby enabling the development and evaluation of treatment strategies for in idual patients.
Effects of Interior Partition Walls on Natural Period of High Rise Buildings
Publisher: World Scientific Pub Co Pte Lt
Date: 08-2017
DOI: 10.1142/S0219455417710067
Abstract: In regions of low to moderate seismicity, serviceability limits states such as inter-story drift under wind load govern the design of the lateral load resisting structural systems of high rise buildings. The key objective in this regard is to provide adequate lateral stiffness to control lateral deflections and inter-story drifts. Current design practice assumes that the structural system alone provides lateral resistance against wind, the dominant load considered for countries like Australia. The contribution of nonstructural components (NSCs) such as interior partition walls on lateral stiffness is generally disregarded in the analysis of the buildings, even though it is commonly acknowledged that the NSCs play a significant role on the lateral stiffness of buildings. This technical note presents the results of a parametric study on the effects of NSCs, in particular, the effects of masonry interior partition walls on the fundamental period of buildings. The parameters considered in this study include: the number and length of walls, their material properties, the number of parallel moment resisting frames and the height of buildings. The results of this study indicate that interior walls can have significant effects on the lateral stiffness of buildings.
Enhancing the strength of pre-made foams for foam concrete applications
Publisher: Elsevier BV
Date: 03-2018
Axial Load Performance of GFRP-Reinforced Hollow Concrete Columns
Publisher: Springer International Publishing
Date: 27-11-2022
Monitoring the Dynamic Behavior of The Merlynston Creek Bridge Using Interferometric Radar Sensors and Finite Element Modeling
Publisher: World Scientific Pub Co Pte Lt
Date: 2017
DOI: 10.1142/S175882511750003X
Abstract: Bridges play an important role in economic development and bring important social benefits. The development of innovative bridge monitoring techniques will enable road authorities to optimize operational and maintenance activities for bridges. However, monitoring the dynamic behavior of a bridge requires a comprehensive understanding of the interaction between the bridge and traffic loading which has not been fully achieved so far. In the present study, an integrated bridge health monitoring framework is developed using advanced 3D Finite Element modeling in conjunction with Weight-in-motion (WIM) technology and interferometric radar sensors (IBIS-S). The realistic traffic loads imposed on the bridge will be obtained through calibration and validation of traffic loading prediction model using real-time bridge dynamic behavior captured by IBIS-S and WIM data. Using the Merlynston Creek Bridge in Melbourne, Australia as a case study, it demonstrated that the proposed bridge monitoring framework can both efficiently and accurately capture the real-time dynamic behavior of the bridge under traffic loading as well as the dynamic characteristics of the bridge. The outcomes from this research could potentially enhance the durability of bridges which is an important component of the sustainability of transport infrastructure.
Hollow concrete columns: Review of structural behavior and new designs using GFRP reinforcement
Publisher: Elsevier BV
Date: 2020
Comparison Between Two Models for Interactions Between Electric and Magnetic Fields and Proteins in Cell Membranes
Publisher: Mary Ann Liebert Inc
Date: 10-2009
Assessment of a Pedestrian Bridge Dynamics Using Interferometric Radar System IBIS-FS
Publisher: Elsevier BV
Date: 2017
Sustainable Cement Composite Integrating Waste Cellulose Fibre: A Comprehensive Review
Publisher: MDPI AG
Date: 19-01-2023
Abstract: This review presents the research conducted to date in the field of cement-based composites reinforced with waste paper-based cellulose fibres, focusing on their composition, mechanical properties, and durability characteristics. The literature demonstrates that the properties of raw material (depending on their own chemical composition) significantly influence the formation of the cement composite binders. When considering fresh properties, the presence of silica and magnesium compounds generally lead to favourable effects on the setting of the cement composite when combined with waste paper cellulose fibre. Reduction in density values, i.e., approximately 25%, was observed with the inclusion of waste paper fibres from 20 to 80% in cement composites. The homogeneous dispersion of fibres in the matrix is one of the crucial factors to achieve in order to develop composites with well-balanced mechanical properties incorporating waste paper cellulose fibres. Hence, dispersion of fibres can be improved by increasing water quantity corresponding to the optimal value, which was a water/cement ratio of 0.64 leading to optimum strength properties of the composite. Even though the effect of fibre dispersion in the matrix improves with the addition of water, higher porosity and voids govern the strength properties beyond an optimum water-to-cement ratio. Higher porosity leads to an increase in the water absorption and a lowering of the thermal conductivity properties with the addition of paper fibre in cement binders. Paper fibre absorbs a high amount of water leading to higher water absorption. This phenomenon is related to the hydrophilic nature of cellulosic fibres absorbing some volume of water due to their microporous structure.
Novel testing and characterization of GFRP bars in compression
Publisher: Elsevier BV
Date: 11-2019
An Assessment of the Effectiveness of Tree-Based Models for Multi-Variate Flood Damage Assessment in Australia
Publisher: MDPI AG
Date: 09-07-2016
DOI: 10.3390/W8070282
A new perspective on representative parameters for cellular concrete
Publisher: Thomas Telford Ltd.
Date: 03-2008
Abstract: The literature shows that representative parameters for the strength of load-bearing cellular concrete (LBCC) used by most researchers are porosity and theoretical strength at zero porosity. However, these concepts are redefined in the current paper to represent more closely the nature of LBCC. Polystyrene beads were used to simulate air bubbles inside LBCC, such that the size distribution of bubbles was easily monitored. The results on strength of lightweight concrete, made of 60, 80 and 100 MPa mortars mixed with polystyrene beads, were reported. Scanning methods, such as CATScan techniques, can be used to determine the porosity of the concrete. However, the advantage of artificial voids created by the use of polystyrene beads is that the pore size distribution can be easily controlled. The strength–porosity relationship using a relative porosity concept and matrix strength (strength at zero porosity) fitted very well with both exponential and power functions proposed by Ryshkewitch and Balshin, respectively. Pore size distribution showed, however, no significant influence on strength, with polystyrene beads size ranging from 1·5 to 3 mm in diameter.
Effects of architecture on ballistic resistance of textile fabrics: Numerical study
Publisher: SAGE Publications
Date: 04-07-2013
Abstract: Composite textiles composed of materials such as Kevlar, Dyneema and Zylon are extensively used in many force/impact protection applications, such as body armor, and automobile and airplane engine fragment resistant containment. Significant effort has been devoted to ballistic testing of composite fabrics made from various manufacturing processes and designs. Performing comprehensive ballistic and impact tests for these composite textiles is a very time-consuming and costly task. Numerical models are presented in this research, thereby providing predictive capability for the manufacturer and designer to minimize field testing, as well as shedding light on to the damage mechanisms of composite fabrics subjected to ballistic impact. Several representative composite fabric architectures (such as plain weave, basket weave and knitted fabrics) are generated for finite element analysis. Numerical investigation is conducted on these fabric structures of the same mass per unit area subjected to projectile impacts. Failure patterns of woven and knitted fabrics obtained from numerical simulations are compared with those observed experimentally. Performances of the representative textile structures are evaluated based on the resultant velocity of the projectile, as well as various energy components. The influences of yarn–yarn and yarn–projectile friction properties on the ballistic performance of various textile structures are presented. To highlight the effects of projectile geometry and angular rotation on the fracture of woven and knitted fabrics, a series of simulations are also performed with three distinctive projectiles of the same mass and impact energy.
Fire performance of prefabricated modular units using organoclay/glass fibre reinforced polymer composite
Publisher: Elsevier BV
Date: 12-2016
On the Compression Behavior of an Austenitic Fe–18M n–0.6C –1.5A l Twinning‐I nduced Plasticity Steel
Publisher: Wiley
Date: 20-06-2013
Aerodynamic instability performance of twin box girders for long-span bridges
Publisher: Elsevier BV
Date: 10-2015
Assessment Method for Inelastic Higher Mode Effects in Outrigger Braced Tall Building Under Seismic Loads
Publisher: World Scientific Pub Co Pte Lt
Date: 04-2019
DOI: 10.1142/S1758825119500248
Abstract: Outrigger system is a more popular structural system in tall buildings and higher mode participation in such buildings is an important aspect in design. During severe earthquake impacts, buildings undergo inelastic deformations, and this can lead to lengthening of modal periods of the building. Since higher mode effects have a significant impact on the overall behavior in tall buildings, the impact due to lengthening of modal periods needs to be addressed in the design. In this study, a simple assessment method is presented to quantify the effect of higher mode response on the behavior of outrigger braced buildings under seismic loads. The method comprises of simplifying the building to vertical cantilever with lateral degrees of freedom equal to number of stories and rotational springs with equivalent spring stiffness at corresponding outrigger locations. A pin-based structure was assumed to limit the first mode response to represent the transition from elastic to inelastic status of the building. The proposed method is capable of estimating the inelastic lengthened periods for higher modes and their responses in outrigger braced tall buildings. The developed method was applied to a case study outrigger braced tall building and reasonable results are predicted.
Effect of wind speed and direction on facade fire spread in an isolated rectangular building
Publisher: Elsevier BV
Date: 05-2022
Alkali activated slag foams: The effect of the alkali reaction on foam characteristics
Publisher: Elsevier BV
Date: 03-2017
Compressive behavior of axially loaded circular hollow concrete columns reinforced with GFRP bars and spirals
Publisher: Elsevier BV
Date: 2019
The role of impairment of mesenchymal stem cell function in osteoporotic bone fracture healing
Publisher: Springer Science and Business Media LLC
Date: 04-07-2017
DOI: 10.1007/S13246-017-0566-Y
Abstract: With demographic change and increasing life expectancy, osteoporotic fractures have become one of the most prevalent trauma conditions seen in daily clinical practice. A variety of factors are known to affect the rate of healing in osteoporotic conditions (e.g. both biochemical and biomechanical environment of callus cells). However, the influence of impairment of mesenchymal stem cell function in the osteoporotic condition on bone fracture healing has not been fully understood. In the present study, we develop a mathematical model that quantifies the change in biological processes within the fracture callus as a result of osteoporosis. The model includes special features of osteoporosis such as reduction in mesenchymal stem cell (MSC) number in osteoporotic bone, impaired response of osteoporotic MSCs to their biomechanical microenvironment and the effects of configuration of locking compression plate (LCP) system on healing in this context. The results presented here suggest that mechanically-mediated MSCs differentiation at early stages of healing are significantly affected under osteoporotic conditions, while it is predicted that the flexible fixation achieved by increasing bone-plate distance of LCP could alleviate the negative effects of osteoporosis on healing. The outcomes of this study could potentially lead to patient specific surgical solutions, and thus achieve optimal healing outcomes in osteoporotic conditions.
The Potential Use of Hypochlorous Acid and a Smart Prefabricated Sanitising Chamber to Reduce Occupation-Related COVID-19 Exposure
Publisher: Informa UK Limited
Date: 2021
DOI: 10.2147/RMHP.S284897
Novel energy-based rational for nominal ductility design of very-high strength concrete columns (\textgreater100 MPa)
Publisher: Elsevier BV
Date: 11-2019
Out-of-plane impact resistance of aluminium plates subjected to low velocity impacts
Publisher: Elsevier BV
Date: 09-2013
Bone fracture healing under Ilizarov fixator: Influence of fixator configuration, fracture geometry, and loading
Publisher: Wiley
Date: 15-04-2019
DOI: 10.1002/CNM.3199
Abstract: This study aims to enhance the understanding of the relationship between Ilizarov fixator configuration and its effects on bone fracture healing. Using Taylor spatial frame (TSF) as an ex le, the roles of critical parameters (ie, TSF ring diameter, wire pre-tension, fracture gap size, and axial load) that govern fracture healing during the early stages were investigated by using computational modelling in conjunction with mechanical testing involving an advanced 3D optical measurement system. The computational model was first validated using the mechanical test results and then used to simulate mesenchymal stem cell (MSC) differentiations within different regions of the fracture site under various combinations of TSF ring diameter, wire pre-tension, fracture gap size, and axial load values. Predicted spatially dependent MSC differentiation patterns and the influence of each parameter on differentiations were compared with in vivo results, and good agreement was seen between the two. Gap size was identified as the most influential parameter in MSC differentiation, and the influence of axial loading and TSF configuration (ie, ring diameter and wire pre-tension) on cell differentiation was seen to be gap size dependent. Most changes in cell differentiation were predicted in the external callus (periosteal), which is the crucial region of the callus in the early stages. However, for small gap sizes (eg, 1 mm), significant changes were predicted in the endosteal callus as well. The study exhibits the potential of computational models in assessing the performance of Ilizarov fixators as well as assisting surgeons in patient-specific clinical treatment planning.
Use of nanoclay to improve the fire performance of glass fibre composites
Publisher: SPIE
Date: 09-08-2013
DOI: 10.1117/12.2027959
Bio-inspired composite structures subjected to underwater impulsive loading
Publisher: Elsevier BV
Date: 02-2014
Transversely isotropic elastic-plastic properties in thermal arc sprayed Al–Zn coating: a microporomechanics approach
Publisher: Springer Science and Business Media LLC
Date: 07-07-2020
DOI: 10.1038/S41598-020-67694-Z
Abstract: The transversely isotropic behaviour of thermal sprayed aluminium and zinc coating has been investigated based on a combination of nanoindentation experimental data and microporomechanics theory. A recently developed strength homogenisation approach comprises of the solid and porous medium is adopted to investigate the morphology properties of thermal sprayed aluminum and zinc coating. The finding of this paper demonstrates that the in idual aluminum and zinc phases in the coating have a characteristic packing density close to the theoretical highest spherical packing ratio for face-centred cubic and hexagonal close packed. Also, the plasticity properties of solid particles in both aluminum and zinc are found to have a significant transversely isotropic condition, while the elasticity properties are close to isotropic. These findings led to the conclusion that the anisotropic condition of the coating is dominantly affected by the plasticity properties, in terms of cohesion and friction coefficient.
Finite element simulation of frp strengthened reinforced concrete slabs under two independent air blasts
Publisher: SAGE Publications
Date: 12-2010
DOI: 10.1260/2041-4196.1.4.469
Abstract: Multiple detonations might occur in both accidental explosions and terrorism attacks. Generally, normal reinforced concrete (RC) structures which are not designed to withstand high intensity blast loads are not capable of withstanding explosions from a single blast let alone a sequence of more than one blast. Since concrete is often highly cracked and damaged from the first blast, the remaining deteriorated concrete and steel reinforcement in a RC member becomes very vulnerable to collapse. This paper reports on the feasibility of using fibre reinforced polymer (FRP) to strengthen a normal RC slab capable of sustaining two independent air blasts. Apart from the experimental investigation, numerical studies have been conducted to verify the concrete and FRP material models when they are utilized to predict the behaviour of FRP-RC structures under multiple blasts. This article provides guidance on how to choose appropriately between the two existing concrete models available in the LS-DYNA code.
Estimation of dynamic response of structural elements subject to blast and impact actions using a simple unified approach
Publisher: Informa UK Limited
Date: 05-2012
Bond performance of reinforcing bars in inorganic polymer concrete (IPC)
Publisher: Springer Science and Business Media LLC
Date: 27-02-2007
Microstructure and strength development of quaternary blend high-volume fly ash concrete
Publisher: Springer Science and Business Media LLC
Date: 21-02-2020
Thermal Stresses of Concrete at Early Ages
Publisher: American Society of Civil Engineers (ASCE)
Date: 06-2019
Performance of lightweight hemp concrete with alkali-activated cenosphere binders exposed to elevated temperature
Publisher: Elsevier BV
Date: 11-2019
Relationship between reactive soil movement and footing deflection: A coupled hydro-mechanical finite element modelling perspective
Publisher: Elsevier BV
Date: 12-2022
A sustainable application of recycled tyre crumbs as insulator in lightweight cellular concrete
Publisher: Elsevier BV
Date: 04-2017
Transforming Municipal Solid Waste into Construction Materials
Publisher: MDPI AG
Date: 09-05-2019
DOI: 10.3390/SU11092661
Abstract: Rapid urbanisation and the associated infrastructure development are creating a deficit of conventional construction materials and straining the natural resources. On the other hand, municipal solid waste (MSW) disposal poses a serious environmental problem. Landfilling of MSW is both costly and polluting. Incineration of MSW to generate energy is a commonly adopted approach. However, there are concerns associated with micro pollutants emitted from the combustion process. The carbon footprint of the process and the environmental cost–benefit balancing are disputable. There is clearly a need to adopt cost-effective alternatives to treat MSW. This paper proposes the potential application of “treated” MSW as an ingredient for construction materials. The treatment process involves placing MSW in an autoclave at 150 °C with 5 bars (0.5 MPa), followed by the separation of metals, plastics and glass for recycling purposes. The end-product, which is a semi-organic mixture (referred to as ‘biomass’), is passed through a vortex-oscillation system, which makes it more uniform as a material. Compressive testing of Portland cement-based pastes containing 10% and 15% biomass shows consistency in the results, demonstrating the potential use of biomass in construction materials.
Behavior of FRP-RC slabs under multiple independent air blasts
Publisher: American Society of Civil Engineers (ASCE)
Date: 10-2011
Post-yield capacity of cold-formed channel sections in bending
Publisher: Thomas Telford Ltd.
Date: 04-2015
Abstract: Flange edge stiffeners can increase the ultimate moment capacity of cold-formed channel sections up to their post-yielding (inelastic) capacity. This paper investigates the post-yielding behaviour under bending of cold-formed channel sections with partially stiffened elements. The relevant literature was reviewed, experimental studies were carried out and a semi-empirical analysis was performed. Experimental and numerical analysis was undertaken of 40 cold-formed channel sections, each with a partially stiffened element. The results were compared with the existing Australian design rules and revisions are proposed to these rules. In addition, by using the test observations and the yield line mechanism model, the ultimate capacity of the tested sections was determined and compared with the test results. The model was found to provide accurate and reliable capacity predictions for slender cold-formed channel sections under bending.
Compressive strength prediction of nano-silica incorporated cement systems based on a multiscale approach
Publisher: Elsevier BV
Date: 02-2017
Impact of atmospheric boundary layer inhomogeneity in CFD simulations of tall buildings
Publisher: Elsevier BV
Date: 07-2020
A probabilistic study of ground motion simulation for Bangkok soil
Publisher: Springer Science and Business Media LLC
Date: 17-12-2017
Shear behaviour of geopolymer-concrete beams transversely reinforced with continuous rectangular GFRP composite spirals
Publisher: Elsevier BV
Date: 03-2018
Analysis and Design of Steel Plate Composite Beams for Shear
Publisher: Springer Singapore
Date: 25-10-2021
Behavior of concentrically loaded geopolymer-concrete circular columns reinforced longitudinally and transversely with GFRP bars
Publisher: Elsevier BV
Date: 06-2016
Revolution in orthopedic immobilization materials: A comprehensive review
Publisher: Elsevier BV
Date: 03-2023
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