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为探讨混凝土碳化与氯离子侵蚀的相互影响及其对混凝土的危害,给定了各种边界条件,研究了因混凝土碳化导致钢筋锈蚀的机理和过程,分析了混凝土未碳化的定量深度。结果表明,对于双重影响条件(即碳化和氯离子侵蚀)下的混凝土,就碳化本身而言,造成混凝土恶化的风险并不是很大,但混凝土碳化会明显加快氯离子的侵蚀,二者共同作用是造成混凝土性能恶化的重要原因。为防止碳化引起的钢筋锈蚀,应精确考虑混凝土保护层厚度。
In order to explore the interaction between concrete carbonization and chloride ion erosion and its damage to concrete, given various boundary conditions, the mechanism and process of steel corrosion caused by carbonation of concrete were studied, and the quantitative depth of carbonation of concrete was analyzed. The results show that for the concrete under double influence conditions (ie, carbonation and chloride ion erosion), the risk of concrete deterioration is not great for the carbonization itself, but concrete carbonation can significantly accelerate the chloride ion erosion, both of which work together Is an important reason for the deterioration of concrete performance. In order to prevent corrosion caused by carbonation, concrete thickness should be considered carefully.