钢纤维体积掺量对超高性能混凝土力学性能的影响  

Influence of volume rations of steel fiber on mechanical properties of ultra-high performance concrete

作　　者：陈从春[1] 冯毅[1] 陈晓冬[1] 

机构地区：[1]上海应用技术学院城市建设与安全工程学院,上海201418

出　　处：《新型建筑材料》2016年第5期54-56,共3页New Building Materials

基　　金：上海市科学技术委员会科研计划项目(13520722400)

摘　　要：摘要：通过立方体抗压试验、劈裂抗拉试验、梁抗折试验，分析了钢纤维体积掺量分别为0．5％、1．0％、1．5％、2．0％、2．5％时对超高性能混凝土（UHPC）力学性能的影响。结果表明，UHPC的抗压强度、抗折强度、劈裂抗拉强度随着钢纤维体积掺量的增加都有不同程度的提高，劈裂抗拉强度在钢纤维体积掺量为1．0％～1．5％时增长最快，抗折强度在钢纤维体积掺量为1．0％-2．5％时增长最快。The experimental study on mechanical properties of Ultra-High Performance Concrete（UHPC） with steel fiber volume ratio of 0.5%, 1.0%, 1.5%,2.0% and 2.5% were carried out. The influences of steel fiber volume ratio on mechanical properties of UHPC were researched through cube compressive tests,cleavage extension tests and beam flexural tests. Experiment result shows that the compressive strength,cleavage extension strength and flexural strength were enhanced with increase of steel fiber volume ration. When doped fiber volume ratios are from 1.0% to 1.5%,the cleavage extension strength increases fastest. When doped fiber volume ratios are from 1.0% to 2.5%,the flexural strength increases fastest.

关 键 词：超高性能混凝土:钢纤维 抗压强度 劈裂强度 抗折强度 

分 类 号：TU528.572[建筑科学—建筑技术科学]