氯盐腐蚀环境下混凝土结构氯离子渗透与扩散研究综述

A Review of Study on the Permeation and Diffusion of Chloride Ion in Concrete Structure under Chlorine Salt Corrosion Environment

氯离子渗透与扩散规律研究是氯盐腐蚀环境下混凝土结构耐久性研究的关键工作,论文主要介绍了氯盐腐蚀环境下混凝土结构氯离子渗透与扩散国内外研究状况。研究表明,建立混凝土结构中氯离子渗透与扩散理论模型必须考虑环境温湿度、混凝土材料劣化效应、混凝土表面氯离子浓度、氯离子扩散系数的时间依赖性、混凝土碳化、混凝土应力状态、混凝土材料对氯离子结合作用等因素,结合具体工程情况判断哪些因素起主导作用,并提出进一步的研究方向。

The study on the law of permeation and diffusion of chloride ion is the key work of durability study of concrete under chlorine salt corrosion environment, the study on the permeation and diffusion of chloride ion in concrete under chlorine salt corrosion environment domestic and aboard is introduced. The study indicated that establish theoretical model of permeation and diffusion of chloride ion in concrete need consider environmental temperature, material degradation effect, chloride concentration in concrete surface, time of diffusion coefficient, concrete carbonization, stress state, material degradation effect of concrete and so on, and combine with practical engineer and determine which factors play a leading role. Finally, the direction of further study is pointed out.