钢纤维大粒径混凝土断裂性能研究  

Fracture performance of steel fiber reinforced concrete with big aggregate

作　　者：石国柱[1] 韩菊红[2] 张雷顺[2] 

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

出　　处：《混凝土》2006年第2期70-71,87,共3页Concrete

基　　金：河南省科技攻关课题(0324240013)

摘　　要：针对水利工程对大粒径混凝土增韧限裂的要求,进行了二级配骨料钢纤维混凝土的断裂性能试验,得出了在不同钢纤维体积率下的断裂韧度和断裂能,并通过方差分析了钢纤维长度、骨料粒径和试件尺寸等对钢纤维混凝土断裂韧度的影响。结果表明:钢纤维的掺入明显提高了二级配混凝土的断裂性能,对其有良好的增韧效果。The fracture toughness test for steel fiber reinforced concrete with two gradation of aggregate is made to meet the requirement of increasing toughness and restricting crack in hydraulic engineering. The fracture toughness and fracture energy of the steel fiber reinforced concrete in different steel fiber volume fraction was reduced from the test. And using the method of analysis of variance, the effect of the length of steel fiber, the aggregate size and specimen size etc. on the fracture toughness of steel fiber reinforced concrete was analyzed. It indicates that to mix steel fiber into reinforced concrete obviously increases the fracture performance of reinforced concrete with two gradation of aggregate.

关 键 词：钢纤维混凝土 断裂性能 二级配 大骨料 

分 类 号：TU528.572[建筑科学—建筑技术科学]