Effects of Strain Rate and Fiber Content on the Dynamic Mechanical Properties of Sisal Fiber Cement-Based Composites

作     者：Yubo Zhang Ping Lei Lina Wang Jiqing Yang 

作者机构：Facuty of Architecture and Civil EngineeringYunnan Agricultural UniversityKunming650000China 

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1期

页      面：393-410页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：supported within the framework of the Basic Research Project of the Yunnan Province-Young Program(No.2019FD097) Agricultural Joint Special Project of the Yunnan Province-General Program(No.202101BD070001-118) 

主　　题：Sisal fiber cement-based composites SHPB energy integration microstructure damage evolution law 

摘      要：In this paper,a split Hopkinson pressure bar(SHPB)was used to investigate the dynamic impact mechanical behavior of sisal fiber-reinforced cement-based composites(SFRCCs),and the microscopic damage evolution of the composites was analyzed by scanning electron microscopy(SEM)and energy-dispersive X-ray spectrome-try(EDS).The results show that the addition of sisal fibers improves the impact resistance of cement-based composite *** with ordinary cement-based composites(OCCs),the SFRCCs demonstrate higher post-peak strength,ductility,and energy absorption capacity with higher fiber ***,the SFRCCs are strain rate sensitive materials,and their peak stress,ultimate strain,and energy integrals all increase with increasing strain *** the perspective of fracture failure characteristics,the failure of OCCs is dominated by the brittle failure of crystal *** contrast,the failure mode of the SFRCCs changes to microscale matrix cracks,multi-scale pull-out interface debonding of fibers(fine filaments and bundles),and mechanical *** research provides an experimental basis for the engineering application of high-performance and green cement-based composites.