Performance of eco-friendly lightweight concrete in-filled Fiber Reinforced Polymer composite columns under axial compression——An experimental, numerical, and theoretical approach  

作　　者：Varunkumar VEERAPANDIAN Gajalakshmi PANDULU Revathy JAYASEELAN 

机构地区：[1]Department of Civil Engineering,B.S.Abdur Rahman Crescent Institute of Science&Technology,Chennai 600048,India

出　　处：《Frontiers of Structural and Civil Engineering》2024年第12期1829-1844,共16页结构与土木工程前沿(英文版)

基　　金：support by All India Council for Technical Education(AICTE)under Research Promotion Scheme,File No.8232/RIFD/RPS(POLICY-1)/2018-19.

摘　　要：In this study,innovative Lightweight Self-compacting Geopolymer concrete made of industrial and agricultural wastes is developed and used as the in-fill material in Fiber Reinforced Polymer(FRP)composite columns.The axial compressive performance of the columns is investigated with critical parameter variations such as the effect of the Diameter to thickness(D/t)ratio and fiber orientation of the FRP tube.Two types of D/t ratios,i.e.,30 and 50,and three fiber orientations±0°,±30°,and±45°were used for the key parameter variations.An increased D/t ratio from 30 to 50 reduces the performance in terms of load despite increasing the deformation.The columns containing the fiber orientation of±0°exhibit greater performance compared to other types of fiber orientation(±30°and±45°).The experimental results and failure patterns were compared and validated against the numerical and theoretical studies.A Finite Element model is developed and validated with the experimental results with errors ranging from 0.84%to 4.57%.The experimental results were validated against various existing theoretical prediction models with a percentage error of 7%to 14%An improved theoretical model is proposed for predicting the axial load of concrete-filled FRP composite columns.

关 键 词：lightweight concrete geopolymer concrete axial compressive loading FRP composite columns fibre orientations diameter to thickness ratio 

分 类 号：TU375.3[建筑科学—结构工程]