离心成型钢纤维混凝土劈裂抗拉强度的尺寸效应  

Size Effect of Splitting-tensile Strength of Spun-cast Steel Fiber Reinforced Concrete

作　　者：潘丽云[1] 钱晓军[1] 张吉红[1] 李凤兰[1] 

机构地区：[1]华北水利水电学院,河南郑州450011

出　　处：《华北水利水电学院学报》2009年第5期37-39,共3页North China Institute of Water Conservancy and Hydroelectric Power

基　　金：河南省自然科学基金项目(0511051700)

摘　　要：基于不同高度试件的劈裂抗拉试验结果,研究了离心成型中速阶段离心时间和离心加速度、骨料级配、钢纤维长度、钢纤维体积率等因素对钢纤维混凝土劈裂抗拉强度尺寸效应的影响.通过对比分析,提出了以高度为150 mm的试件为标准的劈裂抗拉强度尺寸效应换算系数,可供实际应用参考.Based on the splitting-tensile test results of specimens with different depth,the size effect of splitting-tensile strength of spun-cast steel fiber reinforced concrete was studied considering the factors,such as the spun-cast time and acceleration during middle speed stage,the size grades of coarse aggregate,the length and volume fraction of steel fiber.By the comparison analysis,the size conversion coefficients of splitting-tensile strength are proposed taking the depth of 150 mm as the standard size.These can provide some references for application.

关 键 词：钢纤维混凝土 离心成型 劈裂抗拉强度 尺寸效应 

分 类 号：TU528.572[建筑科学—建筑技术科学]