摘要
基于试验研究,讨论了纤维体积掺加率、纤维长度对玄武岩纤维混凝土(BFRC)拉伸强度、拉伸应变的影响规律,分析了玄武岩纤维混凝土拉伸破坏形态。试验结果表明:纤维体积掺加率对BFRC拉伸强度有显著提升作用,而纤维长度对BFRC拉伸应变有明显增强效应。BFRC断裂面粗糙度系数随纤维体积掺加率增大呈幂函数关系降低趋势,粗糙度系数可作为纤维改善混凝土拉伸性能评价指标。
Based on the experimental study,the influence of fiber volume fraction and fiber length on the tensile strength and tensile strain of BFRC are discussed.And the tensile failure mode of BFRC is analyzed.The results show that the fiber volume fraction can significantly improve the tensile strength of BFRC.The tensile strain of BFRC is obviously enhanced by fiber length.The fracture surface roughness coefficient of BFRC decreases in power function with the increase of fiber volume fraction.And the roughness coefficient can be used as the evaluation index of FRC tensile properties.
作者
贺晶晶
师俊平
张勇
狄圣杰
卢浩丹
刘潇敏
HE Jing-jing;SHI Jun-ping;ZHANG Yong;DI Sheng-jie;LU Hao-dan;LIU Xiao-min(Power China Northwest Engineering Corporation Limited,Xi'an 710000,China;Civil Engineering&Architecture College,Xi'an University of Technology,Xi'an 710048,China)
出处
《复合材料科学与工程》
CAS
北大核心
2021年第8期39-43,共5页
Composites Science and Engineering
基金
国家自然科学基金(52079109)
陕西省自然科学基础研究计划资助项目(2021JQ-983)。
关键词
纤维混凝土
玄武岩纤维
拉伸强度
拉伸应变
粗糙度系数
复合材料
fiber reinforced concrete
basalt fiber
tensile strength
tensile strain
roughness coefficient
composites
