路用橡胶粉-聚丙烯纤维混凝土力学性能研究  

Research on Mechanical Properties of Rubber Powder-polypropylene Fiber Concrete for Road Usage

作　　者：王勃 谭亚云[2] 李宏波[2,3] 邹媛媛[2] 

机构地区：[1]中交二公局第三工程有限公司,西安710016 [2]宁夏大学土木与水利工程学院,银川750021 [3]宁夏节水灌溉与水资源调控工程技术研究中心,银川750021

出　　处：《混凝土与水泥制品》2012年第7期41-44,共4页China Concrete and Cement Products

基　　金：宁夏大学科学研究基金项目(ZR1163)

摘　　要：为了研究橡胶粉和纤维不同掺量协同作用对路用混凝土的抗折强度和延性等力学性能的影响,进行了22组试验,分别对基准混凝土、橡胶粉混凝土和橡胶粉纤维混凝土进行了抗压强度、抗折强度和劈裂强度试验。试验结果表明,橡胶粉-纤维可改善路用混凝土的韧性,对于60目橡胶粉+10mm纤维混凝土,橡胶粉掺量控制在6%以内,纤维掺量控制在0.5%以内为佳;对于60目橡胶粉+20mm纤维混凝土,橡胶掺量控制在2%以内,纤维掺量控制在0.5%以内为佳。In order to investigate the influences of the synergistic reaction between fiber and rubber powder on flexural strength and extension of concrete used in subgrade, 22 groups test are conducted, which include compressive strength, flexural strength and splitting strength of standard concrete, rubber concrete and fiber-rubber concrete. The results show that in order to improve the toughness of fiber-rubber concrete, for 60 mesh rubber powder＋lOmm fiber concrete, the content of rubber should be controlled by less than 6%, and the content of fiber should be controlled by less than 0.5%; and for 60 mesh rubber powder＋20mm fiber concrete, the appropriate content of rubber is less than 2% and the content of fiber is less than 0.5%.

关 键 词：橡胶粉 聚丙烯纤维 掺量 抗压强度 抗折强度 劈裂强度 延性 

分 类 号：TU528[建筑科学—建筑技术科学]