坝工混凝土工程碳化机理及实例分析

Mechanism for dam concrete carbonization and case studies

碳化是坝工混凝土工程的主要病害之一。碳化速度和发展趋势,不仅取决于混凝土的自身因素,同时与外界环境条件有关。我国已建坝工混凝土工程碳化现象普遍,部分工程遭受的危害比较严重,有的工程已危及到正常挡水和结构的稳定。跨入21世纪以后,坝工混凝土工程面临的碳化危害将更为严峻。应及时对工程进行防碳化和加固处理,以确保工程的安全运行。

Carbonization is the main disease of dam concrete projects.The speed and development of carbonization not only depend on factors itself,but also on surrounding environment concerned.In China,this phenomena is ubiquitous for existing dams,part of them suffered from carbonization severely and endangered its safety operation and structure stability,so some measures should be taken to prevent from carbonization.