纤维增强水泥基复合材料单轴拉伸性能影响因素研究  

Research on Influencing Factors of Uniaxial Tensile Properties of Fiber Reinforced Cement-based Composites

作　　者：黄程亮 汪小平[1] HUANG Chengliang;WANG Xiaoping(School of Civil Engineering and Surveying&Mapping Engineering,Jiangxi University of Science and Technology,Ganzhou Jiangxi 341000,China;School of Civil Engineering,Liuzhou Institute of Technology,Liuzhou Guangxi 545000,China)

机构地区：[1]江西理工大学土木与测绘工程学院,江西赣州341000 [2]柳州工学院土木建筑工程学院,广西柳州545000

出　　处：《盐城工学院学报（自然科学版）》2024年第2期9-13,共5页Journal of Yancheng Institute of Technology:Natural Science Edition

摘　　要：通过单轴拉伸试验研究了纤维种类、纤维体积掺量及水胶比等因素对纤维增强水泥基复合材料(ECC)拉伸性能的影响。结果表明:随着水胶比的增大,ECC的极限抗拉强度减小,极限拉伸应变增大,应变−硬化特征更加明显;ECC的抗拉强度及拉伸应变随纤维掺量的增大呈升高趋势,纤维掺量2.0%时拉伸应力应变最大;日产PVA纤维对ECC的抗拉强度和拉伸应变影响最为显著,其次是国产PVA纤维,而PP纤维在拉伸过程中的力学性能表现相对较弱。研究结果为ECC的推广与应用提供了一定的参考。Seven groups of fiber reinforced cement-based composites(ECC)were uniaxial tensile tests.The effects of the types of staple fibers,the volume content of staple fibers and the water-binder ratio on the tensile properties of ECC were studied.The results show that the tensile strength of ECC decreases with the increase of water-binder ratio,but the ultimate tensile strain increases,and the strain-hardening characteristics are more obvious.The tensile strength and tensile strain of ECC increased with the increase of fiber content,and the strain reached the maximum when the fiber content was 2.0%.Nissan PVA fiber has the most significant influence on the tensile strength and tensile strain of ECC,followed by domestic PVA fiber,while PP fiber has relatively weak mechanical properties during the tensile process.The research results aim to provide some reference for the popularization and application of ECC.

关 键 词：水泥基复合材料 拉伸性能 水胶比 纤维种类 纤维掺量 

分 类 号：TU528.58[建筑科学—建筑技术科学]