摘要
在实际工程中推广应用钢纤维高强混凝土 ,要了解其基本力学性能 .采用MTS81 5 0 3型液压伺服刚性压力试验机 ,对钢纤维含量为 0～ 6%、抗压强度在 65～ 1 2 0MPa范围的 4种钢纤维高强混凝土 ,进行单轴压缩荷载作用下的应力应变全过程试验 .结合试验给出全曲线的方程 ,并分析钢纤维对抗压强度、弹性模量、韧度、泊松比等的影响 .试验表明 ,当钢纤维长度大于或接近于最大集料尺寸时 ,钢纤维高强混凝土具有较高的抗压强度和韧度 ,是一种优良的新型建筑材料 .
It is necessary to research the basic mechanical performance in order to use high strength steel fiber reinforced concrete (HSFC) in practical engineering. Tests are conducted to characterize the stress strain relationship of HSFC in compression by MTS815 03 rock testing machine. The concrete strength investigated ranges from 65 to 120 MPa and the volume fraction of steel fiber ranges from 0 to 6%. Based on the test data, an analytical model is proposed to generate the complete stress strain curve for HSFC. The elastic modulus and toughness and Poisson’s ration of HSFC are also calculated in this paper. It is also proved by tests that HSFC is a good building material with high strength and high toughness when steel fibers are longer than the size of aggregate in concrete.
出处
《东南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2001年第2期77-80,共4页
Journal of Southeast University：Natural Science Edition
基金
国家自然科学基金资助项目!( 5 970 80 12 )
关键词
钢纤维高强混凝土
应力-应变关系
抗压强度
弹性模量
单轴压缩荷载
high strength steel fiber reinforced concrete
stress strain relationship
compressive strength
elastic modulus
