寒区纤维混凝土断裂能试验研究  

TESTING RESEARCH ON FRACTURE ENERGY OF FIBER SHEET CONCRETE IN FROST AREA

作　　者：武鹤[1] 王国峰[1] 丁剑霆[1] 

机构地区：[1]黑龙江工程学院,哈尔滨150050

出　　处：《低温建筑技术》2009年第2期9-11,共3页Low Temperature Architecture Technology

基　　金：黑龙江省教育厅2008科研资助项目(11531299)

摘　　要：在实验室内,利用液压伺服疲劳试验机,对带有中心裂纹水泥混凝土试件,采取三点加载法,研究在常温、冻融循环后和负40度冰冻状态下,两种纤维掺入量(0.9kg/m3、1.8kg/m3)的聚丙烯纤维网混凝土和零掺入量的基准混凝土断裂能,并尝试将Weibull分布引入断裂能分析。试验表明纤维掺入量为0.9kg/m3的混凝土性价比较高。By using hydraulic servo fatigue testing machine in lab and adopting ternary loading method, fracture energy of cracking samples with zero mixing dosis reference concrete and 0.9kg/m^3/1.8kg/m^3 mixing dosis polypropylene fiber sheet concretes were separately studied under normal temperature, suffering from thawing and freezing cycles and minus 40 degree. Weibull distribution was introduced to analyze fracture energy in this research. Testing results show that ratio of performance and cost of 0.9kg/m^33 mixing dosis concrete is highest.

关 键 词：聚丙烯纤维网混凝土 断裂能 WEIBULL分布 

分 类 号：TU528.572[建筑科学—建筑技术科学]