氯离子的侵蚀造成混凝土中钢筋锈蚀，结构的耐久性能逐渐衰退。通过对氯离子的来源以及侵入混凝土的方式进行了分析，了解氯离子侵蚀的机理。介绍了基于Fick第二扩散定律的氯离子扩散理论修正模型，总结了对混入型氯离子腐蚀和渗入型氯离子腐蚀防护的方法，可供氯离子侵蚀环境中的混凝土耐久性研究参考。%The erosion of rebar in concrete caused corrosion of chloridion, and brought about decline of the structure durability gradually. This article aims to analyze the source of chloride ion and the way of concrete invasion, and have a better understanding of the mechanism of chloride ion's erosion. The article presented the correction model of the chloride diffusion theory which based on Fick's second law of diffusion, and summarized the protection method of the admixture type of chloride ion corrosion and the permeate type of corrosion chloride ions,can supply a reference for the concrete durability study if the chlorine under the environment of the chloridion's erosion.
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