水泥混凝土盐冻腐蚀机理及改善措施分析

Salt freeze corrosion mechanism and improvement measures of cement concrete

建设于寒冷北方地区的公路工程混凝土结构在冬季雪后,为保证交通安全,通常采用铺撒除冰盐型融雪剂进行除冰化雪,而使用除冰盐类融雪剂的结果是导致水泥混凝土路面、桥面、护拦、路缘石等结构物盐冻损坏。调研显示,在水泥混凝土所有耐久性失效问题中,盐冻剥蚀破坏最为迅速。文章分别就水泥混凝土盐冻腐蚀机理及改善措施进行分析,供同行参考。

In winter after snow, to ensure the traffic safety, highway concrete structure constructed in cold northern region usually adopt de -icing salt snowmeh agent for deieing snow, which leads to cement concrete pavement, bridge deck, guardrail anti curb damaged for salt freezing. Research shows that in all cement concrete durability failure problem, salt frozen erosion de- stroy is most rapid. This paper analyzed the cement concrete salt frozen corrosion mechanism and improvement measures, pro- vides reference for the colleague.