玄武岩纤维改性砂浆防护层的抗氯离子渗透性  

Chloride permeability of concrete applied w ith basalt fiber modified mortar coatings

作　　者：梅军帅 吴静 王罗新 梅军鹏[2] 李海南[2] MEI Junshuai;WU Jing;WANG Luoxin;MEI Junpeng;LI Hainan(College of Materials Science and Engineering,Wuhan Textile University,Wuhan 430200,China;State Key Laboratory for Silicate Building Materials,Wuhan University of Technology,Wuhan 430070,China)

机构地区：[1]武汉纺织大学材料科学与工程学院,湖北武汉430200 [2]武汉理工大学硅酸盐建筑材料国家重点实验室,湖北武汉430070

出　　处：《混凝土》2019年第8期34-36,42,共4页Concrete

基　　金：湖北省重大专项研发计划(2018AAA001);固废资源化利用与节能建材国家重点实验室开放基金资助项目(SWR-2016-002)

摘　　要：通过玄武岩纤维改性的砂浆防护层处理混凝土,研究涂覆一层保护砂浆层对混凝土的抗氯离子渗透性能的影响,研究表明经防护层处理的混凝土抗氯离子渗透性能得到了明显的改善。用RCM方法和压汞法(MIP)探讨了玄武岩纤维改性的砂浆防护层对混凝土抗氯离子渗透性的影响及机理,分析发现玄武岩纤维对贯穿裂缝和孔隙的有抑制作用,提高了混凝土抗氯离子渗透的能力。Compared with the concrete without modification coating,the chloride penetration resistance of modified concrete was significantly improved,especially in concrete applied with 0.5%basalt fiber of 6 mm modified mortar coating.Then RCM method and mercury intrusion porosimetry(MIP)were used to explore the influence mechanism of basalt fiber modified cementitious coatings on the re sistance against chlorine penetration of concrete.The analysis reveals that the inhibiting effect of BF on connected cracks and pores improved the ability of concrete to counter chloride diffusion.

关 键 词：抗氯离子渗透 玄武岩纤维 砂浆防护层 孔结构 

分 类 号：TU528.572[建筑科学—建筑技术科学]