聚丙烯纤维增强自密实混凝土的力学与抗裂抗渗性研究  

Study on polypropylene fiber reinforced self-compacting concrete

作　　者：刘竞[1] 邓德华[1] 赵腾龙[1] 尹明[1] 

机构地区：[1]中南大学土木建筑学院,湖南长沙410075

出　　处：《中国建筑防水》2008年第2期8-12,共5页China Building Waterproofing

基　　金：铁道部科技司基金项目"铁路客运专线高性能混凝土施工技术研究";项目编号:G2006;中南大学研究生创新基金项目;项目编号:053720010

摘　　要：掺加聚丙烯纤维能增强自密实混凝土的抗裂抗渗性,试验表明:掺加聚丙烯纤维后通过采取一系列措施可提高混凝土工作性达到自密实要求;纤维掺量越大,抗裂性越好;抗渗性随纤维掺量增大而增强,当纤维掺量超过一定值时,抗渗性下降。Adding polypropylene fiber can improve crack resistance and impermeability of self-compacting concrete. The test results show that concrete workability can be obtained to meet requirement for self-compacting by taking measures after adding polypropylene fiber. And the more polypropylene fiber added, the better crack resistance and impermeability were; but impermeability drops when the amount of polypropylene fiber exceeds a certain level.

关 键 词：自密实混凝土 聚丙烯纤维 抗渗性 抗裂性 氯离子渗透 

分 类 号：TU528.572[建筑科学—建筑技术科学]