摘要
结合扩散-反应方程,重点分析了干湿循环-硫酸盐侵蚀作用混凝土的侵蚀机理,研究认为干湿循环改变了硫酸盐介质在混凝土中的迁移方式和侵蚀过程,加剧了混凝土性能的劣化。通过对研究成果的总结与分析,指出了几种主要因素,如硫酸盐种类及浓度、矿物掺合料、混凝土强度等级等,对侵蚀后混凝土性能的影响规律。
The corrosion mechanism for concrete exposed to the wetting-drying and sulfate environ- ment is profoundly studied with the diffusion-reaction equation. The wetting-drying cycles change the migration mode and corrosion process of su.lfates in the concrete, which aggravates the deterioration of properties of the concrete. According to the analysis of the existing research, the effecting law of several major factors, such as the variety and concentration of sulfates, mineral admixtures, the concrete strength, et al, on the properties damage of concrete is discussed.
出处
《公路》
北大核心
2009年第2期163-166,共4页
Highway
基金
西部交通建设科技项目,项目编号200631822302-08
