Concern has been expressed in the recent decades about the corrosion prediction of concrete structures in a chloride environment. This paper summarises the corrosion prediction models developed for chloride-contaminated concrete, including both the empirical and electrochemical corrosion models. The definition methods of the steel de-passivation process for electrochemical models, such as anode–cathode ratio (A_a/A_c), critical chloride concentration (C_Cl,crit), modification of anodic Tafel slope (β_a) or passive film resistance (R_f), are considered essential and discussed in detail. Furthermore, electrochemical parameters regarding the definition and selection in electrochemical models and experimental measurements are discussed. This study confirms that A_a/A_c and C_Cl,crit have been generally used in recent years, and that the modifications of β_a and R_f related to free chloride concentration are technically feasible. In addition, the discreteness of electrochemical parameters in electrochemical models and experimental measurements are observed, and time-dependent characteristics of electrochemical parameters are scarcely presented in the existing literature.

中文翻译：

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氯化物污染混凝土中钢筋的腐蚀预测模型：综述

近几十年来，人们对氯化物环境中混凝土结构的腐蚀预测表示担忧。本文总结了为氯化物污染混凝土开发的腐蚀预测模型，包括经验腐蚀模型和电化学腐蚀模型。用于电化学模型的钢去钝化过程的定义方法，如阴阳比（A _a / A _c）、临界氯化物浓度（C _Cl,crit）、阳极塔菲尔斜率（β _a）或钝化膜的修改电阻 ( R _f)，被认为是必不可少的，并进行了详细讨论。此外，还讨论了有关电化学模型和实验测量中定义和选择的电化学参数。本研究证实了A _a / A _c和C _Cl,crit近年来已普遍使用，并且与游离氯浓度相关的β _a和R _f的修改在技​​术上是可行的。此外，观察到电化学模型和实验测量中电化学参数的离散性，现有文献中几乎没有介绍电化学参数的时间相关特性。