水泥混凝土用合成纤维的强度统计分析和耐碱性分析  

Strength statistical analysis and alkali resistance analysis of synthetic fiber for cement concrete

作　　者：张帅[1] 杨鼎宜[1] 骆静静[2] 胡欣欣 刘鑫 

机构地区：[1]扬州大学建筑科学与工程学院,江苏扬州225127 [2]苏州混凝土水泥制品研究院有限公司,江苏苏州215004

出　　处：《混凝土》2017年第11期122-125,共4页Concrete

基　　金：国家重点研发计划(2016YFB0303104);国家自然科学基金(51578479);江苏省普通高校专业学位研究生实践创新计划项目(SJLX16_0592)

摘　　要：水泥混凝土用合成纤维单丝抗拉强度受制于自身缺陷,缺陷随机分布,可用Weibull分布来评价纤维。通过用Weibull分布理论对将溶液处理前后的合成纤维的单丝强度进行统计分析,结果表明聚丙烯腈纤维和聚丙烯纤维内部缺陷分布均匀性较好,碱溶液处理后聚丙烯纤维材料内部缺陷分布的均匀性下降最为严重。同时还检测了4种纤维的耐碱性,结果表明聚乙烯醇的耐碱性要低于其他3种纤维。Synthetic fiber for cement concrete monofilament′s tensile strength is subject to its own defects,defect random distribution,Weibull distribution can evaluate available fibers.The strength of monofilaments before and after solution treatment is analyzed by the Weibull distribution theory.The results show that the polyacrylonitrile fiber and polypropylene fiber distribution uniformity is good,the defect with aqueous alkali polypropylene fibre material is most severe drop in the uniformity of the distribution of internal defects.At the same time,it also tested the alkali resistance of four kinds of fiber.The results show that the alkali resistance of polyvinyl alcohol to be lower than other three kinds of fiber.

关 键 词：合成纤维 WEIBULL分布 耐碱性 单丝强度 

分 类 号：TU528.041[建筑科学—建筑技术科学]