渗透成膜型防护涂料对混凝土耐久性的影响  

Effect of permeable-film-protective coating on the durability of concrete

作　　者：刘东[1] 陈雷[1] 陈星[2] 余剑英[2] 

机构地区：[1]唐山曹妃甸发展投资集团有限公司,河北唐山050051 [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：《新型建筑材料》2014年第1期90-92,共3页New Building Materials

基　　金：唐山市科技计划项目

摘　　要：采用环氧树脂与低分子质量聚硅氧烷制备的渗透成膜型防护涂料对混凝土进行表面处理,通过渗透深度、氯离子扩散、冻融和碳化试验,研究了渗透成膜型防护涂料对混凝土耐久性的影响。结果表明,渗透成膜型防护涂料能够显著提高混凝土的抗氯离子渗透性能,增强其抗冻融破坏能力,明显降低其碳化速度和碳化深度,有效改善混凝土的耐久性。The permeable-film-protective coating prepared with epoxy resin and low molecular weight polysiloxane was used to treat the surface of concrete. The effects of the permeable-film-protective coating on the durability of concrete were investigated by the tests of penetration and carbonation depth,chloride ion resistance and freeze-thaw cycle. The results show that the resistance of permeable-film-protective coating to chloride ion penetration and freeze-thaw cycle increases obviously. Meanwhile,the carbonation velocity and carbonation depth of the concrete coated with the permeable-film-protective coating decrease. The durability of con- crete can be improved effectively by the permeable-film-protective coating.

关 键 词：混凝土 渗透成膜型防护涂料 聚硅氧烷 耐久性 

分 类 号：TU561.65[建筑科学—建筑技术科学]