西藏地区水工混凝土表面防护应用技术研究  

Research on Applied Technology of Hydraulic Concrete Surface Protection in Tibet

作　　者：肖承京[1,2] 陈亮[1,2] 张达[1,2] 廖灵敏[1,2] 冯菁[1,2] 汪在芹[1,2] 

机构地区：[1]长江水利委员会长江科学院,湖北武汉430010 [2]三峡地区地质灾害与生态环境湖北省协同创新中心,湖北宜昌443002

出　　处：《中国建筑防水》2016年第10期21-25,共5页China Building Waterproofing

基　　金：水利部公益性行业专项(201301023);国家自然科学基金项目(51378078;51309018);中央级科学事业单位基本科研业务费项目(CKSF2014052/CL;CKSF2015032/CL)

摘　　要：针对西藏高海拔地区寒冷条件下水工混凝土的破坏机理,开发了多种具有良好抗渗性和耐老化性能的混凝土表面防护涂层,主要包括改性环氧树脂涂层材料和聚脲防护涂层材料。防护涂料兼具混凝土缺陷修补与表面防护效果,与新旧混凝土基底有良好的粘结性能,涂层防护下的混凝土试件抗冻融优于F250,在西藏地区水利水电工程中进行了试验和应用,防护效果良好。In terms of the failure mechanism of hydraulic concrete under the cold condition of high elevation region in Tibet,many kinds of concrete surface protective coatings with excellent anti-permeability and anti-aging propert y are developed,mainly including modified epoxy resin coating and polyurea protective coating. The protective coatings have both the effects of concrete defects repairing and surface protecting, and also possess good bonding property with new and old concrete substrates.The freezing thawing resistance of concrete sample under protective coating is superior to F250. They have been tested and applied in the hydraulic and hydroelectric engineering projects in Tibet region, and the protective effects are fairly good.

关 键 词：高寒地区 水工混凝土 抗冻融 表面防护材料 聚脲 改性环氧树脂 

分 类 号：TV431[水利工程—水工结构工程]