To investigate the durability of magnesium oxychloride-coated reinforced concrete (MOCRC) and the deviation from the natural corrosion process of the electrified accelerated corrosion test in reinforced concrete. We used the electrified accelerated corrosion test with saline soil as an electrolyte. A quality test, dynamic elastic modulus test, crack-width test, electrochemical performance test and microscopic test were conducted regularly. Test results show that the relative quality evaluation parameter ω₁, the relative dynamic elastic modulus evaluation parameter ω₂ and the relative corrosion evaluation parameter ω₃, which characterize the degradation of MOCRC, all gradually decrease as the electrification time increases. Failure standards were reached at 24d, 21d and 21d, respectively. Analysis of morphology, corrosion current density and corrosion rate shows that the morphology of the coated steel bar under accelerated corrosion is consistent with natural corrosion. Using saline soil as the electrolyte of the accelerated corrosion system can simulate steel bar corrosion in a natural environment better than a traditional salt solution.

中文翻译：

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恒流加速腐蚀下MOCRC的耐久性研究

为了研究氯氧化镁涂层钢筋混凝土（MOCRC）的耐久性以及与钢筋混凝土电气化加速腐蚀试验的自然腐蚀过程之间的偏差。我们使用了以盐渍土为电解质的电气化加速腐蚀试验。定期进行质量测试，动态弹性模量测试，裂缝宽度测试，电化学性能测试和微观测试。试验结果表明，相对质量评估参数ω ₁，相对动弹性模量的评价参数ω ₂和相对腐蚀评估参数ω ₃表征MOCRC退化的特征，随着电气化时间的增加而逐渐减小。分别在24d，21d和21d达到失效标准。对形态，腐蚀电流密度和腐蚀速率的分析表明，加速腐蚀下的涂层钢筋形态与自然腐蚀相符。使用盐渍土壤作为加速腐蚀系统的电解质可以比传统的盐溶液更好地模拟自然环境下钢筋的腐蚀。