ORCID Profile
0000-0001-5855-6405
Current Organisation
University of South Australia
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Publisher: Springer Singapore
Date: 04-09-2020
Publisher: Elsevier BV
Date: 04-2023
Publisher: Elsevier BV
Date: 2022
Publisher: MDPI AG
Date: 10-11-2022
DOI: 10.3390/SU142214852
Abstract: The reuse of end-of-life (EOL) tyres as earth reinforcement materials in civil engineering projects have been studied for decades. Entire EOL tyres infilled with compacted soil can form segmental tyre encased soil elements (TESEs) with considerable load-bearing capacity. The TESEs can be used to construct structures like low-rise buildings, railway foundations and geotechnical structures. One of the most important aspects of TESE systems, i.e., the shearing interaction between neighbouring units is not yet well understood. In this study, thirty-six laboratory tests have been conducted to investigate the response of TESEs under intercourse shear actions. This was followed by a supply chain environment and economic analysis to investigate the acceptability of the system. The results revealed that the type of encased soil had more effect on the interface interactions between courses of TESEs compared to the TESEs’ construction pattern. It was also found that the frictional coefficient could be increased by either using coarse and angular aggregates as the encased soil or reducing the amount of the encased soil to form a high portion of rubber-to-rubber contact at the composite interface. Supply chain environment and economic analysis revealed that using entire tyres as construction materials has low CO2 emission and considerable economic benefits.
Publisher: Elsevier BV
Date: 04-2023
Publisher: Elsevier BV
Date: 10-2016
Publisher: Elsevier BV
Date: 12-2020
Publisher: Springer International Publishing
Date: 2019
Publisher: Trans Tech Publications, Ltd.
Date: 02-2017
DOI: 10.4028/WWW.SCIENTIFIC.NET/KEM.729.122
Abstract: This study presents the results of the experimental study on the axial compressive behavior of the rubberized concrete under active confinement. Two different mixes of concretes with rubber replacement ratios of 0%, as a control mix, and 18% were prepared. The effects of the incorporation of rubber and the confining pressure on the compressive behavior of concrete were examined through tests of unconfined and actively confined concrete cylinders. The active confinement was applied by a Hoek cell at different pressures, including 5, 7.5, 10, 15, 20, and 25 MPa. The results indicate that the rubberized concrete exhibits lower compressive strength but higher axial and lateral deformation capacities than those of the conventional concrete.
Publisher: Elsevier BV
Date: 02-2021
Publisher: Elsevier BV
Date: 06-2018
Publisher: American Society of Civil Engineers (ASCE)
Date: 04-2023
Publisher: Elsevier BV
Date: 12-2021
Publisher: IEEE
Date: 11-2017
Publisher: Elsevier BV
Date: 05-2017
Publisher: MDPI AG
Date: 19-06-2019
DOI: 10.3390/JCS3020062
Abstract: Double-skin tubular columns (DSTCs) have become a competitive candidate for column members due to their important advantages compared with conventional reinforced concrete columns, including their better weight-to-strength ratio and ease of construction. Using Rubcrete in hybrid DSTCs is of great interest due to the potential of this system to overcome the Rubcrete material deficiencies and to add more ductility, toughness, seismic resistance, confinement effectiveness, and environmentally-friendly features to that structural system compared to conventional concrete. In this paper, hybrid DSTCs made out of Rubcrete, sandwiched between a fibre reinforced polymer (FRP) tube and a steel tube, were tested. The examined variables were concrete sand or stone replacement ratio (0% and 20%), FRP wall thickness (1- and 2-layers), steel wall thickness (3.2 mm and 4.5 mm), void ratio (50% and 76%), and void shape (circular or square). The axial and lateral stress–strain responses were monitored, measured, and compared. According to this investigation, using Rubcrete in hybrid DSTCs can enhance the axial and hoop strain capacities, especially with fine rubber particles. It was also observed that the adverse influence of using rubber on column ultimate capacity was much lower in DSTC specimens, compared with that of unconfined Rubcrete columns. Therefore, using Rubcrete with fine rubber particles is recommended in DSTC structural columns.
Publisher: Elsevier BV
Date: 2016
Publisher: Elsevier BV
Date: 07-2023
Publisher: American Society of Civil Engineers (ASCE)
Date: 05-2016
Publisher: Elsevier BV
Date: 10-2017
Publisher: SAGE Publications
Date: 15-09-2022
DOI: 10.1177/13694332221126595
Abstract: Masonry structure built with mortarless interlocking blocks effectively reduces the construction time and costs and also improves the quality of construction. However, due to the vast variety in the construction methods and geometry of these blocks, their behavior has not been fully understood. In this paper, an experimental study was conducted to understand the in-plane and out-of-plane behavior of interlocking mortarless masonry. Four types of interlocking blocks (namely trapezoidal-shaped, Lego-shaped, cross-shaped, and checkered-shaped blocks) as well as one simple control block with the same size as the interlocking blocks were considered. Innovative 3D printed molds were designed and manufactured to construct the designed interlocking blocks with different shapes. Masonry units were then assembled with and without adhesive paste and were subjected to six different tests including compressive, diagonal shear, in-plane and out-of-plane shear tests, as well as flexural tests in parallel and perpendicular to the bed joints directions. The results were compared in terms of the general behavior, crack pattern, failure mode, and ultimate strength. According to the results, in the flexural test perpendicular to the bed joints and diagonal shear tests, the trapezoidal-shaped and Lego-shaped blocks had the highest strength because of their side shear keys. In the flexural test in parallel to the bed joints, the cross-shaped block had the highest strength due to its highest total locked area. In the in-plane and out-of-plane shear tests, the cross- and checkered-shaped blocks respectively had the best performance due to their high inter-block contact area and out-of-plane effective contact area. This research provides a comprehensive evaluation of the effect of shapes on the behavior of interlocking blocks under different loading conditions. The outcome of this study helps designers to identify the most suitable interlocking shape based on the critical type of loading that masonry needs to be designed for.
Publisher: Elsevier BV
Date: 05-1976
Publisher: American Society of Civil Engineers (ASCE)
Date: 08-2020
Publisher: Springer Singapore
Date: 04-09-2019
Publisher: MDPI AG
Date: 30-05-2021
DOI: 10.3390/JCS5060146
Abstract: Different types of recycled plastic have been used in concrete and most studies have focused on the behaviour of a single type of plastic. However, separating plastic wastes increases the cost and time of processing. To tackle this problem, this research presents an experimental investigation to determine the effect of incorporating different combinations of three types of recycled plastic waste aggregates—Polyethylene terephthalate (PET), High Density Polyethylene (HDPE) and Polypropylene (PP)—at different replacement ratios of coarse aggregate on physical and mechanical properties of concrete. The combinations include two plastic types at 10% and 20% replacement ratios and three plastic types at 15% and 30% replacement ratios. The performance of the plastic concrete was assessed based on various physical and mechanical properties including workability, fresh and dry densities, air content, compressive, indirect tensile and flexural strengths, modulus of elasticity, stress-strain behaviour and ultrasonic pulse velocity. It is found that the workability of Mixed Recycled Plastic Concrete (MRPC) at a low replacement rate is independent of the type of plastic. The minimum reduction in the compressive strength, indirect tensile and modulus of elasticity were achieved by R3 (PET + PP) at 10% replacement, while R5 (HDPE + PP) at 10% replacement achieved the highest flexural strength and ultrasonic pulse velocity values. The findings suggest that the mixed recycled plastics have a good possibility to partially replace coarse aggregates in concrete which will benefit the plastics recycling community and environment. Furthermore, the study will provide guidance to the concrete industry concerning the effect of the implementation of unsorted mixed types of plastic as coarse aggregates in the production of concrete.
Publisher: American Society of Civil Engineers (ASCE)
Date: 05-2022
Publisher: Springer Science and Business Media LLC
Date: 2023
DOI: 10.1007/S11709-022-0850-0
Abstract: The application of unbonded post-tensioning (PT) in structural walls has led to the development of advanced self-centring (rocking) shear wall systems that has significant advantages, including accelerated construction due to the incorporation of prefabricated elements and segmental construction for different materials (e.g., concrete, masonry, and timber), reduced residual drifts, and little damage upon extreme seismic and wind loads. Concrete, masonry, and timber are often used for the construction of unbonded PT structural wall systems. Despite extensive research since the 1980s, there are no well-established design guidelines available on the shear wall configuration with the required energy dissipation system, joint’s locations and acceptance criteria for shear sliding, confinement, seismic performance factors, PT loss, PT force range and residual drifts of shear walls subjected to lateral loads. In this research a comprehensive state-of-the-art literature review was performed on self-centring shear wall system. An extensive study was carried out to collect a database of 100 concrete, masonry, and self-centring shear wall tests from the literature. The established database was then used to review shear walls’ configurations, material, and components to benchmark requirements applicable for design purposes. The behaviour of concrete, masonry and timber shear walls were compared and critically analysed. The general behaviour, force-displacement performance of the walls, ductility, and seismic response factors, were critically reviewed and analysed for different self-centring wall systems to understand the effect of different parameters including configurations of the walls, material used for construction of the wall (concrete, masonry, timber) and axial stress ratio. The outcome of this research can be used to better understand the behaviour of self-centring wall system in order to develop design guidelines for such walls.
Publisher: Springer Science and Business Media LLC
Date: 06-06-2023
Publisher: Springer International Publishing
Date: 29-10-2019
Publisher: American Society of Civil Engineers (ASCE)
Date: 10-2022
Publisher: Elsevier BV
Date: 2022
Publisher: Elsevier BV
Date: 11-2021
Publisher: Elsevier BV
Date: 02-2022
Publisher: American Society of Civil Engineers (ASCE)
Date: 11-2019
Publisher: Springer Singapore
Date: 23-12-2021
Publisher: MDPI AG
Date: 07-01-2019
DOI: 10.3390/JCS3010005
Abstract: Due to the structural and economic features of steel–concrete–steel (SCS) structural systems compared with conventional reinforced concrete ones, they are now used for a range of structural applications. Rubcrete, in which crumbed rubber from scrap tires partially replaces mineral aggregates in concrete, can be used instead of conventional concrete. Utilizing rubber waste in concrete potentially results in a more ductile lightweight concrete that can introduce additional features to the SCS structural members. This study aimed to explore different concrete core materials in SCS beams and the appropriate shear connectors required. In this study, four SCS sandwich beams were tested experimentally under incrementally increasing flexure cyclic loading. Each beam had a length of 1000 mm, and upper and lower steel plates with 3 mm thickness sandwiched the concrete core, which had a cross-section of 150 mm × 150 mm. Two of the beams were constructed out of Rubcrete core with welded and bolted shear connectors, while the other two beams were constructed with welded shear connectors and either conventional concrete or lightweight expanded clay aggregate (LECA) concrete cores. The performance of the SCS sandwich beams including damage pattern, failure mode, load-displacement response, and energy dissipation behavior was compared. The results showed that, while Rubcrete was able to provide similar concrete cracking behavior and strength to that of conventional concrete, LECA concrete degraded the strength properties of SCS. Using bolted shear connectors instead of welded ones caused a high number of cracks that resulted in a reduced ductility and deflection capacity of the beam before failure. The rubberized concrete specimen presented an improved ductility and deflection capacity compared with its conventional concrete counterpart.
Publisher: Springer Science and Business Media LLC
Date: 09-2017
Publisher: Elsevier BV
Date: 04-2023
Publisher: Elsevier BV
Date: 2012
DOI: 10.1016/J.TALANTA.2011.11.051
Abstract: A simple controlled chemical reduction of 1,3,5-trinitro-1,3,5-triazacyclohexane (RDX) and related nitramine compounds with zinc amalgam generates species that elicit intense chemiluminescence with tris(2,2'-bipyridine)ruthenium(III), which extends this widely utilised chemiluminescence reagent to a new class of analyte and presents a sound chemical basis for a screening test for nitramine high explosives. Examination of the chemiluminescence profiles under stopped-flow conditions revealed contributions from multiple transient species formed in the initial reduction step.
Publisher: Elsevier BV
Date: 2019
Publisher: Elsevier BV
Date: 06-2022
Publisher: Elsevier BV
Date: 07-2021
Publisher: Elsevier BV
Date: 04-2017
Publisher: Elsevier BV
Date: 02-2021
Publisher: Springer Science and Business Media LLC
Date: 17-04-2021
Publisher: MDPI AG
Date: 24-08-2021
DOI: 10.3390/SU13179521
Abstract: Impact resistance, water transport properties and sodium sulphate attack are important criteria to determine the performance of concrete incorporating mixed types of recycled plastic waste. Nine mixes were designed with different combinations of the three plastic types Polyethylene terephthalate (PET), High density polyethylene (HDPE) and Polypropylene (PP). The plastic partially substituted the coarse aggregate (by volume) at various replacement ratios 10%, 15%, 20% and 30%. The impact resistance and water transport properties were evaluated for nine mixes while sodium sulphate attack test was performed for three mixes. The results showed that the addition of mixed recycled plastic in concrete improved the impact resistance. The highest impact resistance improvement was achieved by R8 (PET + HDPE + PP) at 30% replacement which was 4.5 times better than the control mix. Water absorption results indicated a slight increase in all plastic mixes while contradictory results were observed for sorptivity test. Analysis of sodium sulphate attack results showed that incorporating 30% mixed plastic reduced the sodium sulphate resistance slightly due to the collective effect of plastic entrapping of sulphate ions after 80 cycles. This study has shown some positive results relating to the impact performance of Mixed Recycled Plastic Concrete (MRPC) which enhances its use in a sustainable way.
Publisher: American Society of Civil Engineers (ASCE)
Date: 08-2017
Publisher: ASTM International
Date: 10-04-2015
DOI: 10.1520/ACEM20150001
Publisher: American Society of Civil Engineers (ASCE)
Date: 08-2020
Publisher: MDPI AG
Date: 10-04-2019
DOI: 10.3390/JCS3020041
Abstract: This research extensively investigates how to enhance the mechanical performance of Rubcrete, aiming to move this type of concrete from the laboratory research level to a more practical use by the concrete industry. The effects of many different mixing procedures, chemical pre-treatments on the rubber particles, and the use of fibre additives, have been investigated for their impact upon Rubcrete workability, compressive strength, tensile strength, and flexural strength. The mixing procedure variables included mixing time and mixing order. The rubber pre-treatments utilized chemicals such as Sodium Hydroxide (NaOH), Hydrogen Peroxide (H2O2), Sulphuric acid (H2SO4), Calcium Chloride (CaCl2), Potassium Permanganate (KMnO4), Sodium Bisulphite (NaHsO3), and Silane Coupling Agent. Soaking rubber particles in tap water, or running them through water before mixing, were also tried as a pre-treatment of rubber particles. In addition, the effects of fibre additives such as steel fibres, polypropylene fibres, and rubber fibres, were assessed. X-ray photoelectron spectroscopy (XPS) analysis was utilised to examine some of the pre-treated rubber particles. The results showed that doubling the net mixing time of all mix constituents together enhanced the Rubcrete slump by an average of 22%, and the compressive strength by up to 8%. Mixing rubber with dry cement before adding to the mix increased the compressive strength by up to 3%. Pre-treatment using water was more effective than other chemicals in enhancing the Rubcrete workability. Regardless of the treatment material type, the longer the time of the treatment, the more cleaning of rubber occurred. Significant Rubcrete flexural strength increase occurred when using 1.5% fibre content of both steel fibre and polypropylene fibre.
Publisher: Informa UK Limited
Date: 2014
Publisher: Elsevier BV
Date: 2022
Publisher: American Society of Civil Engineers (ASCE)
Date: 11-2015
Publisher: American Society of Civil Engineers (ASCE)
Date: 09-2022
Publisher: Elsevier BV
Date: 07-2017
Publisher: ASTM International
Date: 07-04-2017
DOI: 10.1520/ACEM20160026
Publisher: Elsevier BV
Date: 05-2022
Publisher: Springer Science and Business Media LLC
Date: 04-2021
Publisher: Elsevier BV
Date: 04-2023
Publisher: Elsevier BV
Date: 11-2018
Publisher: Springer Science and Business Media LLC
Date: 08-2021
Location: Iran (Islamic Republic of)
Location: Iran (Islamic Republic of)
Location: Iran (Islamic Republic of)
No related grants have been discovered for Reza Hassanli.