纤维及混杂纤维增强膨胀混凝土耐久性研究  

STUDY ON THE DURABILITY OF THE FIBER AND HYBRID FIBER REINFORCED EXPANSIVE CONCRETE

作　　者：孙道胜[1] 邓敏[2] 唐明述[2] 

机构地区：[1]安徽建筑工业学院,合肥230022 [2]南京工业大学,南京210009

出　　处：《工业建筑》2005年第4期69-71,47,共4页Industrial Construction

基　　金：安徽省自然科学基金项目 (编号 :0 5 0 44 0 70 5 );安徽省教育厅自然科学重点项目 (编号 :2 0 0 2KJ0 82ZD);江苏省重点实验室开放课题资助

摘　　要：研究了聚丙烯 (PP)纤维、聚乙烯醇 (PVA)纤维及聚丙烯和聚乙烯醇混杂纤维增强膨胀混凝土的抗渗、抗冻、耐磨等耐久性能和变形特性。结果显示 ,纤维及混杂纤维能显著提高膨胀混凝土的抗渗、抗冻和耐磨性能 ,且混杂纤维优于单一纤维 ,纤维对膨胀混凝土的膨胀有一定的约束作用。分析认为 ,纤维与微膨胀复合能有效改善混凝土的内部结构 ,减少由变形变化引起的混凝土原生缺陷 。It is studied that the permeability resistance,frost resistance,wear resistance and deformation properties of the polypropylene fiber,polyethlene alcohol fiber and hybrid fiber reinforced expansive concrete.The study shows that fiber and hybrid fiber will substantially enhance the permeability resistance,frost resistance and wear resistance of expansive concrete;hybrid fiber is superior to the unitary fiber; and fiber will have some restriction to the expansion of the expansive concrete.The analysis shows that the combination of fiber and micro-expansion will effectively improve the internal structure of the concrete and reduce its primitive limitation caused by the distortion.Therefore a new technical approach to increase the durability of the concrete is also explored.

关 键 词：混凝土耐久性 混杂纤维增强 膨胀混凝土 聚乙烯醇 变形特性 耐久性能 耐磨性能 约束作用 内部结构 原生缺陷 技术途径 聚丙烯 微膨胀 抗渗 抗冻 

分 类 号：TU528[建筑科学—建筑技术科学]