大粒径钢纤维混凝土劈拉性能研究  

Splitting tensile strength of steel fiber reinforced concrete with big aggregate

作　　者：石国柱[1] 韩菊红[2] 

机构地区：[1]安阳师范学院建筑工程学院,河南安阳455002 [2]郑州大学环境与水利工程学院,河南郑州450002

出　　处：《混凝土》2009年第9期87-88,94,共3页Concrete

基　　金：河南省科技攻关课题(0324240013);安阳师范学院"骨干教师资助计划"

摘　　要：基于水利工程中对大粒径混凝土的防裂增韧要求,进行了二级配骨料钢纤维混凝土试件的劈拉试验,探讨了钢纤维体积率(钢纤维掺量)对混凝土劈拉强度的影响,提出了提高钢纤维对混凝土劈拉强度影响系数的思路和劈拉强度的计算公式。结果表明:钢纤维对二级配混凝土劈拉强度有良好的增强效果。The splitting tensile test of steel fiber reinforced concrete with two gradation of aggregate was made to meet the requirement of in- creasing toughness and restricting crack in hydraulic engineering.The impact of steel fiber volume fraction on the splitting tensile strength of concrete is discussed ,proposing the solution of increasing the impact of steel fiber on the splitting tensile strength of concrete and the calculation formula for the splitting tensile strength of steel fiber reinforced concrete.The conclusion shows steel fiber could effectively improve the splitting tensile test of concrete with two gradation of aggregate.

关 键 词：钢纤维混凝土 劈拉强度 二级配 大骨料 

分 类 号：TU528.572[建筑科学—建筑技术科学]