ORCID Profile
0000-0003-1452-3753
Current Organisation
Griffith University - Gold Coast Campus
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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.
Civil Engineering | Composite and Hybrid Materials | Civil Geotechnical Engineering | Construction Engineering |
Primary Mining and Extraction of Mineral Resources not elsewhere classified | Coal Mining and Extraction | Metals (e.g. Composites, Coatings, Bonding)
Publisher: Elsevier BV
Date: 02-2016
Publisher: Springer Science and Business Media LLC
Date: 21-05-2016
Publisher: CRC Press
Date: 12-12-2022
Publisher: Springer Science and Business Media LLC
Date: 30-07-2022
DOI: 10.1007/S12665-022-10514-6
Abstract: Heritage buildings always pose challenges due to experiencing high temperatures and pressure over time. Sandstone is one of the common sedimentary rock types used for these buildings. Therefore, it is very important to understand the microstructural variations of rocks associated with these constructions along with the mechanical variations. In this study, the microstructural and mechanical alteration of selected types of sandstones is investigated after it is heated from room temperature to 800 °C. Micro X-ray computed tomography (µXCT), X-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetry (TG) and derivative thermogravimetry (DTG) techniques were used to identify the physical, chemical, mineralogical and microstructural changes of sandstone after different heat treatments. The mechanical alteration of the heated rock specimens was also studied using the point load index (PLI). The main changes in microstructure were observed when the sandstone’s temperature was greater than 400 °C. The total porosity measured by µXCT of sandstone increased by more than 70% at 800 °C compared to its porosity at room temperature. When the temperature increases, the open porosity increases while the closed porosity decreases. Noticeable changes in rock mineralogy were identified at temperatures exceeding 400 °C, which can be attributed to the phase transition of quartz, decomposition of feldspar and dehydroxylation of kaolinite. The TG and DTG analyses and point load index were in good agreement concerning these changes in rock mineralogy. Microstructural variation is one of the main reasons for the discrepancy in threshold values between different sandstones.
Publisher: Elsevier BV
Date: 04-2011
DOI: 10.3208/SANDF.51.333
Publisher: Springer Science and Business Media LLC
Date: 29-10-2014
Publisher: CRC Press
Date: 23-10-2019
Publisher: American Association for Cancer Research (AACR)
Date: 09-2015
DOI: 10.1158/2326-6066.CIR-15-0088
Abstract: The ability to use circulating peripheral blood cells and matched tumor sequencing data as a basis for neoantigen prediction has exciting possibilities for application in the personalized treatment of cancer patients. We have used a high-throughput screening approach, combining whole-exome sequence data, mRNA microarrays, and publicly available epitope prediction algorithm output to identify mutated proteins processed and displayed by patient tumors and recognized by circulating immune cells. Matched autologous melanoma cell lines and peripheral blood mononuclear cells were used to create mixed lymphocyte tumor cell cultures, resulting in an expansion of tumor-reactive T cells to use for mutated peptide screening. Five patients were investigated, three of whom had a durable complete response (CR 15+ years) in an autologous melanoma-pulsed dendritic cell clinical trial. We identified seven mutated antigens in total that stimulated T-effector memory cells in two of the five patients. While the procedure did not result in clinically applicable neoantigens for all patients, those identified were likely important in tumor clearance, leading to durable CR. The nature of the screening process allows results to be obtained rapidly and is easily applicable to a wide variety of different tumor types. Cancer Immunol Res 3(9) 992–8. ©2015 AACR.
Publisher: Informa UK Limited
Date: 28-11-2018
Publisher: Research in Enineering Education Network (REEN)
Date: 2022
DOI: 10.52202/066488-0016
Publisher: MDPI AG
Date: 29-04-2022
DOI: 10.3390/GEOTECHNICS2020017
Abstract: There are many empirical equations published for unsaturated fine-grained soils. However, there is only one empirical equation established for silty sand using the shear-box test and filter-paper-based suction test, but with the suction range of 0 to 200 kPa. It is reported that there is a significant discrepancy between the predicted values and test results of apparent cohesion within the range of 0 to 100 kPa for unsaturated coarse-grained soils. The purpose of this research is to study the effect of water content on apparent cohesion and predict apparent cohesion for coarse-grained soils within the range of 0 to 100 kPa using shear-box test and suction test results without much inconsistency. In this research, soil s les from the rainfall-induced landslide sites were obtained laboratory tests such as soil-classification tests, shear-box tests and consolidated undrained triaxial tests were carried out. Test results were analyzed, and the findings are presented. When the water content is increased from 0% to 30%, there is a reduction of 89% in apparent cohesion on average. A newly developed prediction model for apparent cohesion based on the low range of matric suction from 0 to 100 kPa for unsaturated coarse-grained soils is introduced in this paper and compared with published models.
Publisher: Australian Centre for Geomechanics, Perth
Date: 2013
Publisher: Elsevier BV
Date: 12-2020
Publisher: Elsevier BV
Date: 10-2023
Publisher: Elsevier BV
Date: 04-2017
Publisher: Springer Science and Business Media LLC
Date: 23-05-2013
Publisher: American Society of Civil Engineers (ASCE)
Date: 11-2016
Publisher: Elsevier BV
Date: 12-2015
Publisher: Springer Science and Business Media LLC
Date: 21-05-2016
Publisher: American Society of Civil Engineers (ASCE)
Date: 10-2013
Publisher: American Society of Civil Engineers (ASCE)
Date: 2006
Publisher: CRC Press
Date: 21-11-2018
Publisher: CRC Press
Date: 21-11-2018
Publisher: International Journal of Geomate
Date: 11-2019
Publisher: Springer Science and Business Media LLC
Date: 13-01-2021
Publisher: Springer Science and Business Media LLC
Date: 05-2010
Publisher: Springer Science and Business Media LLC
Date: 24-11-2011
Publisher: CRC Press
Date: 12-12-2022
Publisher: Springer Science and Business Media LLC
Date: 08-11-2006
Publisher: Research Publishing Services
Date: 2012
Publisher: Springer Science and Business Media LLC
Date: 14-08-2014
Publisher: Research in Enineering Education Network (REEN)
Date: 2021
DOI: 10.52202/066488-0004
Publisher: Wiley
Date: 12-06-2022
DOI: 10.1111/APA.16422
Abstract: Critically review research methods used to elicit children and young people's views and experiences in the first year of COVID‐19, using an ethical and child rights lens. A systematic search of peer‐reviewed literature on children and young people's perspectives and experiences of COVID‐19. LEGEND ( Let Evidence Guide Every New Decision ) tools were applied to assess the quality of included studies. The critical review methodology addressed four ethical parameters: (1) Duty of care (2) Children and young people's consent (3) Communication of findings and (4) Reflexivity. Two phases of searches identified 8131 studies 27 studies were included for final analysis, representing 43,877 children and young people's views. Most studies were from high‐income countries. Three major themes emerged: (a) Whose voices are heard (b) How are children and young people heard and (c) How do researchers engage in reflexivity and ethical practice? Online surveys of children and young people from middle‐class backgrounds dominated the research during COVID‐19. Three studies actively involved children and young people in the research process two documented a rights‐based framework. There was limited attention paid to some ethical issues, particularly the lack of inclusion of children and young people in research processes. There are equity gaps in accessing the experiences of children and young people from disadvantaged settings. Most children and young people were not involved in shaping research methods by soliciting their voices.
Publisher: Springer Science and Business Media LLC
Date: 19-08-2019
Publisher: Elsevier BV
Date: 12-2022
Publisher: Informa UK Limited
Date: 14-08-2018
Publisher: Elsevier BV
Date: 07-2006
Publisher: Springer Science and Business Media LLC
Date: 04-07-2016
Publisher: Springer Science and Business Media LLC
Date: 29-04-2016
Publisher: American Society of Civil Engineers (ASCE)
Date: 02-2009
Publisher: Springer International Publishing
Date: 2023
DOI: 10.1007/978-3-031-16898-7_7
Abstract: This paper presents and discusses the mechanisms of rainfall-induced shallow landslides that commonly occur in South East Queensland (SEQ) and northern New South Wales (NSW), Australia. The major factors causing the formation of landslide mass such as geology, weathering, and rainfall patterns were discussed. Results from field surveys and laboratory testing of rock/soil material from landslide masses were presented, and relationships between the material strength and landslide occurrence were drawn. It was found that most of shallow slides were related to sandstone deposits. Those failures occurred on natural slopes and road cuts with the inclination of the failure plane being in the range of 35–45°. For natural slopes where the landslide mass mostly consisted of coarse-grained soil, the relationship between the soil strength and water content was established. In addition, the relationship between rainfall patterns such as intensity and duration, and the landslide occurrence was presented. Based on the data from field work and laboratory results including a series of flume tests, the mechanism of shallow landslides triggered by rainfall events was identified and discussed.
Publisher: CRC Press
Date: 23-10-2019
Publisher: Springer Science and Business Media LLC
Date: 24-05-2015
Publisher: International Journal of Geomate
Date: 06-2020
Publisher: MDPI AG
Date: 17-03-2023
DOI: 10.3390/GEOTECHNICS3010007
Abstract: This paper seeks to investigate the effect of rainfall intensity on the occurrence of shallow landslides by means of a series of flume tests. Coarse-grained material was used to build a slope, and several rainfall events with an intensity of either 40 mm/h, 70 mm/h, or 100 mm/h were simulated to initiate slope failure. A set of pore water pressure and moisture content sensors was installed in the slope to monitor changes in the water conditions during each test. Different initial moisture contents of 5% and 10% of the soil mass were used to better understand the effect of moisture on slope stability during rainfall. It was found that the slope failed when intensities of 70 mm/h and 100 mm/h were used however, no failure was observed with a rainfall intensity of 40 mm/h. The failure patterns were found to be similar, with progressive slides occurring as more water infiltrated the slope. A numerical procedure to estimate the factor of safety over the period of the rainfall event was proposed and validated against the laboratory data. The results of the numerical analysis yielded the failure time, which was close to the time observed in the flume tests.
Publisher: CRC Press
Date: 23-10-2019
Publisher: Elsevier BV
Date: 12-2015
Publisher: Oxford University Press (OUP)
Date: 28-05-2019
DOI: 10.1104/PP.19.00421
Publisher: CRC Press
Date: 23-10-2019
Publisher: American Society of Civil Engineers (ASCE)
Date: 11-2016
Publisher: CRC Press
Date: 23-10-2019
Publisher: CRC Press
Date: 23-10-2019
Publisher: Springer Science and Business Media LLC
Date: 02-2023
Publisher: CRC Press
Date: 23-10-2019
Publisher: International Journal of Geomate
Date: 09-2017
Publisher: Springer Science and Business Media LLC
Date: 22-05-2011
Publisher: Elsevier BV
Date: 06-2013
Publisher: Springer Science and Business Media LLC
Date: 16-01-2021
Publisher: American Society of Civil Engineers (ASCE)
Date: 05-2015
Publisher: Springer Science and Business Media LLC
Date: 14-01-2021
Publisher: Springer-Verlag
Publisher: Springer International Publishing
Date: 2022
Publisher: MDPI AG
Date: 17-04-2023
Abstract: This study seeks to investigate whether project-based assignments can lead to better student performance and learning experience compared to traditional examinations. In an engineering course of soil mechanics, the traditional mid-semester and final exams were replaced by project work which was related to a real-life site investigation. Student performance was evaluated on the basis of student marks whilst student feedback was analysed to understand student experience with project-based assignments. The results indicated that the student average mark for the projects was greater than the average mark for the exams. In addition, their learning experience improved after the exams were replaced with the project-based assignments because students were able to see practical applications of the course content. However, a few issues, including feedback to students delivered at the end of the term, increased teacher’s workload, and the effect of COVID were also identified.
Publisher: Springer Science and Business Media LLC
Date: 26-04-2026
Publisher: CRC Press
Date: 23-10-2019
Publisher: CRC Press
Date: 21-11-2018
Publisher: CRC Press
Date: 21-11-2018
Publisher: MDPI AG
Date: 05-02-2023
DOI: 10.3390/APP13042066
Abstract: Pore space characterisation is important in assessing the strength and hydraulic characteristics of rock. This paper proposes a new relationship to estimate the porosity of natural rocks using the data from a scanning electron microscope (SEM) and a pore and crack analysis system (PCAS). The obtained results were compared with the data obtained from a series of conventional mercury intrusion porosimetry (MIP) experiments. Three different rocks, namely siltstone, sandstone, and coal, collected from a depth below 400 m, were investigated in this study. The results indicated that the proposed method of digital analysis could accurately identify the pore size and porosity values, which were in agreement with the experimental data. The relationship between the two-dimensional porosity estimated from the digital analysis and the three-dimensional porosity obtained from laboratory experiments was established. A few limitations on the use of the proposed method have also been identified and discussed.
Publisher: MDPI AG
Date: 09-01-2023
DOI: 10.3390/APP13020887
Abstract: The necessary application of sustainable engineering methodologies has been increasing as the number of environmental hazards caused by global warming is on the rise. Cement as a traditional common additive for soil improvement has several negative impacts on the environment. This led to an urge for alternative sustainable solutions. The use of biopolymers as environmentally friendly materials is one of the potential options. This study aims to investigate the effect of xanthan gum biopolymer as a sustainable solution for soil properties enhancement. The Atterberg limits, unconfined compression, CU and UU triaxial tests were performed to examine the effect of xanthan gum on the soil strength and plasticity. Additionally, the durability of biopolymer-treated and untreated soils under wetting and drying cycles and moisture susceptibility were assessed. The results showed that the compressive strength of soil increased by increasing the xanthan gum concentration and curing time and reached its peak value after a specific curing time. The addition of xanthan gum resulted in significant improvement in soil cohesion and caused a reduction in the internal friction angle of the soil. While increasing the number of wetting/drying cycles decreased the soil strength, the biopolymer-treated soil exhibited higher soil strength than the untreated soil. This study provides valuable experiences in the use of xanthan gum biopolymer in practical engineering applications.
Publisher: Informa UK Limited
Date: 21-02-2018
Publisher: Springer Science and Business Media LLC
Date: 26-10-2014
Publisher: CRC Press
Date: 21-11-2080
Publisher: MDPI AG
Date: 21-03-2023
Abstract: To mitigate the negative environmental effects of the overuse of conventional materials—such as cement—in soil improvement, sustainable engineering techniques need to be applied. The use of biopolymers as an alternative, environmentally friendly solution has received a great deal of attention recently. The application of lignin, a sustainable and ecofriendly biobased adhesive, to enhance soil mechanical properties has been investigated. The changes to engineering properties of lignin-infused soil relative to a lignin addition to soil at 0.5, 1, and 3.0 wt.% (including Atterberg limits, unconfined compression strength, consolidated undrained triaxial characteristics, and mechanical properties under wetting and drying cycles that mimic atmospheric conditions) have been studied. Our findings reveal that the soil’s physical and strength characteristics, including unconfined compressive strength and soil cohesion, were improved by adding lignin through the aggregated soil particle process. While the internal friction angle of the soil was slightly decreased, the lignin additive significantly increased soil cohesion the addition of 3% lignin to the soil doubled the soil’s compressive strength and cohesion. Lignin-treated s les experienced less strength loss during wetting and drying cycles. After six repeated wetting and drying cycles, the strength of the 3% lignin-treated s le was twice that of the untreated s le. Soil treated with 3% lignin displayed the highest erosion resistance and minimal soil mass loss of ca. 10% under emulated atmospheric conditions. This study offers useful insights into the utilization of lignin biopolymer in practical engineering applications, such as road stabilization, slope reinforcement, and erosion prevention.
Publisher: JCFCorp SG PTE LTD
Date: 30-09-2019
Publisher: CRC Press
Date: 21-11-2018
Publisher: CRC Press
Date: 21-11-2018
Publisher: MDPI AG
Date: 14-10-2021
DOI: 10.3390/RS13204124
Abstract: Optical flow is a vision-based approach that is used for tracking the movement of objects. This robust technique can be an effective tool for determining the source of failures on slope surfaces, including the dynamic behavior of rockfall. However, optical flow-based measurement still remains an issue as the data from optical flow algorithms can be affected by the varied photographing environment, such as weather and illuminations. To address such problems, this paper presents an optical flow-based tracking algorithm that can be employed to extract motion data from video records for slope monitoring. Additionally, a workflow combined with photogrammetry and the optical flow technique has been proposed for producing highly accurate estimations of rockfall motion. The effectiveness of the proposed approach has been evaluated with the dataset obtained from a photogrammetry survey of field rockfall tests performed by the authors in 2015. The results show that the workflow adopted in this study can be suitable to identify rockfall events overtime in a slope monitoring system. The limitations of the current approach are also discussed.
Publisher: Springer Science and Business Media LLC
Date: 27-03-2018
Start Date: 06-2016
End Date: 06-2018
Amount: $800,000.00
Funder: Australian Research Council
View Funded Activity