摘要
采用改进的钢纤维混凝土劈拉试验方法,研究了钢纤维混凝土、聚丙烯腈纤维混凝土及混杂纤维混凝土的劈拉强度及劈拉韧性,结果表明:钢纤维、聚丙烯腈纤维均能够提高混凝土的极限劈拉强度,其中钢纤维明显提高混凝土的劈拉韧性;钢—聚丙烯腈纤维组合使用对混凝土的劈拉强度及韧性具有正混杂效应。通过对试验结果的分析,推荐了钢—聚丙烯腈纤维混杂掺入混凝土时的一种较优混杂比例。
Based on the idea of improved test method of splitting of steel fiber reinforced concrete,the effect of steel fiber ,polyacrylonitrile fiber and hybrid fibers on splitting strength and splitting toughness of concrete is studied in the paper.The results show that both steel fiber and polyacrylonitrile fiber have positive effet on the splitting strength of concrete,while steel fiber also helps to improve the splitting toughness of concrete. The steel- polyacrylonitrile fiber has synergy on the splitting strength and toughness of concrete.According to the analysis of the test results, an optimal hybrid ratio of steel- polyacrylonitrile fiber was proposed.
出处
《混凝土》
CAS
CSCD
北大核心
2007年第3期11-13,共3页
Concrete
关键词
钢纤维
聚丙烯腈纤维
混凝土
极限劈拉强度
劈拉韧性
steel fiber
polyacrylonitrile fiber
concrete
splitting strength
splitting toughness
作者简介
尹机会（1980-），男，硕士研究生，研究方向：纤维混凝土。单位地址：大连理工大学土木水利学院结构研究所（116023）联系电话：13500716914
