寒冷地区混凝土坝上游面冻融剥蚀修复与防护  

Repair and protection of freeze-thaw erosion on upstream face of concrete dam in cold area

作　　者：付颖千 吴春忠[2] FU Yingqian;WU Chunzhong(Beijing IWHR-KHL Co.,Ltd)

机构地区：[1]北京中水科海利工程技术有限公司,北京100038 [2]水利部海河水利委员会,天津300170

出　　处：《大坝与安全》2020年第4期64-68,共5页Dam & Safety

摘　　要：寒冷地区的混凝土坝工作条件极其苛刻,尤其是水位变化区,混凝土容易发生冻融剥蚀破坏。笔者分析了混凝土冻融剥蚀的原因,提出了寒冷地区混凝土冻融剥蚀的修复方法,以及在混凝土表面进行耐久性防护的措施,介绍了3座大坝水位变化区混凝土冻融剥蚀修复及表面防护实例,为类似工程的缺陷处理提供了借鉴。The working conditions of concrete dams in cold area are extremely harsh,especially for the water level change area,the concrete is prone to freeze-thaw erosion.The author analyzes the causes of concrete freeze-thaw erosion,and puts forward the repair methods of concrete freeze-thaw erosion and the measures of concrete surface durability protection.In addition,three examples of concrete freezethaw erosion repair and surface protection in the water level change area are introduced to provide reference for the treatment of similar defects.

关 键 词：冻融剥蚀 修复 耐久性防护 SK手刮聚脲 

分 类 号：TV642[水利工程—水利水电工程]