氯离子引起的钢筋锈蚀是钢筋混凝土结构耐久性破坏的主要原因之一。首先通过对氯离子传输机理的研究,描述了经典传输模型及其缺陷。同时,分析了考虑氯离子结合能力、时间依赖性、湿度及温度、应力、电场、多种环境因素耦合作用对经典氯离子传输理论模型的修正。最后对今后氯离子传输理论模型的研究重点进行了展望。
Steel corrosion caused by chloride ion is one of the main reasons of the durability failure of concrete structures. The classicaI transmission model and its defects were described through the study of chloride ion transport mechanism. And the correction of chloride ion transport theoretical model is analyzed in consideration of the coupled effects of the capacity of chloride ion binding, time-dependence, humidity and temperature, stress, electric field and other environmental factors. At last, the research priorities of chloride ion transport theoretical model is predicted.