题 目：针对严重腐蚀环境采用GFRP纵筋和箍筋的地聚物混凝土柱的性能及设计
时 间：2019年7月5日9：30－10：30
地 点：七号楼二楼小会议室
报告人：Elchalakani高级讲师（西澳大学）
欢迎广大师生参加
土木与交通学院
2019年7月3日
报告人简介：
Dr Elchalakani is the Director of the Structural Laboratory at UWA. He is currently an associate editor of the Australian Journal for Civil Engineering. Dr Elchalakani current Scopus citations are in excess of 1100 with h-index 19 where he authored or co-authored more than 100 technical papers.
Dr Elchalakani current main research interests are concrete durability, corrosion and repair of steel pipelines, offshore structures as well as concrete structures. Dr. Elchalakani’s key industry and academic experiences include computational analysis, experimental testing, structural stability, and design of steel and composite structures. He is currently an approved reviewer for many famous international journals such as the Structural Engineering Journal published by the American Society of Civil Engineers (ASCE).
Dr. Elchalakani received several awards, including the Holman Medal for the most outstanding PhD thesis and the Hunt Award for excellence in Research in Engineering. He also received the prestigious Japanese Society for Promotion of Science Fellowship and Monash University Postgraduate Publication Award for his outstanding publication record, in addition to receiving a number of collaborative research grants at Victoria University. Moreover, Dr Elchalakani is a certified Problem Based Learning Educator.
报告摘要：
Glass fibre reinforced polymer (GFRP) bars in construction are increasing in popularity due to their excellent corrosion resistance, high tensile-strength-to-weight ratio and low maintenance. Geopolymer is a modern cementitious material that is known for its corrosion resistance and low carbon footprint. Combining the two could produce a green yet durable composite material that can be applied to aggressive environments such as Australia’s coastal zones. This study experimentally investigates the load-moment interaction of GFRP-reinforced air cured geopolymer concrete columns. The behaviour of reinforced geopolymer concrete columns reinforced with GFRP bars and stirrups under combined loading were studied with eleven half-scale specimens. A total of 22 rectangular, 22 square and 30 circular columns were examined. Three different stirrup spacings were examined, small, medium and large. Effective confinement was achieved by reducing the stirrup spacing such that high strains were measured in the concentric columns with closely spaced stirrups. A comparison between the experimental data and international design codes showed that such codes were conservative when ignoring the compressive strengths of the longitudinal GFRP bars. The experimental results were better represented when the compressive strengths of the bars were included; on average, the GFRP reinforced geopolymer concrete columns exhibited about 10% increase in strength with respect to unreinforced concrete sections. Finite element modelling was carried out and good match was found between predicted and measured load-deflection curves.
