Experimental Investigation on Compressive Properties of Fiber Recycled Aggregate Concrete

作     者：Guiwu Lin Kaige Liu Yuliang Chen Yunpeng Ji Rui Jiang 

作者机构：College of Civil Engineering and ArchitectureGuangxi University of Science and TechnologyLiuzhou545006China 

出 版 物：《Journal of Renewable Materials》 (可再生材料杂志(英文))

年 卷 期：2023年第11卷第11期

页      面：3957-3975页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 0807[工学-动力工程及工程热物理] 081304[工学-建筑技术科学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0813[工学-建筑学] 0814[工学-土木工程] 

基　　金：supported by the Postdoctoral Science Foundation of China(2021M693854) the Doctoral Foundation of Guangxi University of Science and Technology(No.18Z09) Bagui Scholar Program sponsored from the People’s Government of Guangxi Zhuang Autonomous Region(No.2019(79)) 

主　　题：Recycled aggregate concrete fiber compressive properties energy dissipation toughness 

摘      要：This paper presents an experimental study to explore the compressive properties of fiber recycled aggregate concrete.A total of 75 specimens with the replacement rate of recycled coarse aggregate and fiber type were conducted under a uniaxial compressive *** failure modes,stress-strain whole curves,peak stress,peak strain,and energy dissipation capacity were systematically observed and *** results indicate that steel fiber has the best modification effect on energy dissipation capacity and the toughness index of recycled concrete,corresponding to the enhancement of 81.75% and 22.90% on *** addition of polyvinyl alcohol fiber can effectively improve the compressive strength and energy dissipation capacity of recycled aggregate concrete by 28.49% and 29.43% on average,*** compressive strength and energy dissipation capacity of recycled aggregate concrete is increased by an average of 16.5% and 24.4% by incorporating carbon *** energy dissipation capacity of recycled aggregate concrete is increased by an average of 13.5% with the incorporation of polypropylene ***,the addition of carbon fiber results in a slight reduction of toughness by 16.97%,and the effect of polyvinyl alcohol fiber on the energy dissipation capacity is ***,with the increase in replacement rate,the compressive strength and the energy dissipation capacity of recycled coarse aggregate concrete with fiber decreased,and toughness first decreased and then ***,based on the analysis of test data,a segment-based stress-strain model of fiber recycled aggregate concrete was proposed,which shows good agreement with the test results.