掺入聚丙烯纤维珊瑚混凝土的力学性能研究  

Mechanical property tests of coral concerete with polypropylene fiber

作　　者：王磊 熊祖菁[2] 刘存鹏[2] 李泉龙 

机构地区：[1]桂林理工大学广西矿冶与环境科学实验中心,广西桂林541004 [2]桂林理工大学土木与建筑工程学院,广西桂林541004 [3]桂林理工大学广西建筑新能源与节能重点实验室,广西桂林541004

出　　处：《混凝土》2014年第7期96-99,共4页Concrete

基　　金：广西矿冶与环境科学实验中心资助项目;教育部重点科研项目(212134)

摘　　要：主要研究了不同掺量的聚丙烯纤维对珊瑚混凝土的立方体抗压强度、劈裂抗拉强度和抗折强度、弹性模量的影响,对比没有掺入纤维与掺入纤维后珊瑚混凝土的破坏形态异同。试验结果为:聚丙烯纤维的加入使抗压、劈裂抗拉强度以及抗折强度都得到不同程度的提高,在一定范围内,当纤维掺量为2kg/m3时,抗压与劈裂抗拉强度增长率分别提高6.3%和16.5%,抗折强度最高达到4.5MPa,并且聚丙烯对珊瑚混凝土劈裂抗拉强度增强效果比抗压强度显著。聚丙烯纤维珊瑚混凝土弹性模量值低于普通混凝土,却高于轻骨料混凝土。This paper mainly study the influence of different polypropylene fiber contents on compressive strength ,splitting tensile strength and flexural strength ,modulus of elasticity of the coral concrete.Compare with the differences of failure form of coral concrete between the blocks which add polypropylene fiber or not.The results show that join the polypropylene fiber can increase the strength of the compressive strength ,tensile splitting and flexural strength.Within a certain range, when the fiber vomule is 2 kg/m3, both the compressive and splitting tensile strength respectively improve 6.3% and 16.5% ,flexural strength up to 4.5 MPa.And polypropylene fiber make the splitting tensile strength of the coral concrete more effectively than the compressive strength.Elastic modulus value of the coral concrete which add polypropylene fiber is lower than normal concrete, higher than the lightweight aggregate concrete.

关 键 词：聚丙烯纤维 珊瑚混凝土 力学性能 

分 类 号：TU528.041[建筑科学—建筑技术科学]