An effective approach to make better use of the salt‐brine resistance of magnesium oxychloride cement concrete (MOCC) and reduce “magnesium damage” (the concentrate of magnesium resources) that destroys the ecological balance in salt lake areas is to apply MOCC widely. However, the first problem is the high chloride ion content in MOCC, which corrodes reinforcement easily. Concrete cover depth, the experimental environment, and surface treatment of rebar were considered factors study in reinforcement corrosion in MOCC. Based on the tests conducted, a time‐dependent model for reinforcement corrosion in MOCC was proposed, and its life time (initial corrosion and initial cracking time) was calculated and verified in tests. The results showed that proper coating could inhibit reinforcement corrosion and increase the service life of rebar significantly. Further, the salt lake environment had little influence on reinforcement corrosion in MOCC. For exposed rebar in MOCC, the larger the concrete cover depth, the more serious the reinforcement corrosion, while, for coated rebar, the converse was true. All cases of reinforcement corrosion in MOCC conformed to the logarithmic‐type time‐dependent model before concrete cracking. Accordingly, reinforcement corrosion in MOCC and the excess of magnesium resources are expected to be solved.

中文翻译：

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氧氯化镁水泥混凝土中钢筋腐蚀的时变模型和寿命预测

更好地利用MOCC，是一种更好地利用氯氧化镁水泥混凝土（MOCC）的耐盐卤性和减少破坏镁盐湖地区生态平衡的“镁破坏”（镁资源的浓缩物）的有效方法。但是，第一个问题是MOCC中的氯离子含量高，容易腐蚀增强材料。混凝土覆盖深度，实验环境和钢筋表面处理被认为是研究MOCC中钢筋腐蚀的因素。基于所进行的测试，提出了一种基于时间的MOCC钢筋腐蚀模型，并计算了其寿命（初始腐蚀和初始开裂时间）并在测试中进行了验证。结果表明，适当的涂层可抑制钢筋腐蚀，并显着提高钢筋的使用寿命。此外，盐湖环境对MOCC中的钢筋腐蚀几乎没有影响。对于MOCC中裸露的钢筋，混凝土覆盖层深度越大，钢筋腐蚀越严重，而对于带涂层的钢筋，则相反。在混凝土开裂之前，MOCC中的所有钢筋腐蚀情况均符合对数型时变模型。因此，有望解决MOCC中的强化腐蚀和过量的镁资源。在混凝土开裂之前，MOCC中的所有钢筋腐蚀情况均符合对数型时变模型。因此，有望解决MOCC中的增强腐蚀和过量的镁资源。在混凝土开裂之前，MOCC中的所有钢筋腐蚀情况均符合对数型时变模型。因此，有望解决MOCC中的增强腐蚀和过量的镁资源。