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钢筋的锈蚀极大地缩短了混凝土结构的寿命。在电迁移阻锈剂的基础上，提出一种电迁移、电沉积双效修复方法，以修复锈蚀钢筋，避免二次腐蚀的发生。通过电化学阻抗谱测试、氯离子滴定法评估了双效修复效果。采用毛细吸水试验评价了双效修复对砂浆性能的影响，采用XRD和SEM测试分析了双效修复的作用机理。结果显示，双效修复显著降低了砂浆内部氯离子含量，修复后钢筋耐腐蚀性能提高了2个数量级，乙醇胺+硫酸镁展现出最好的修复效果。此外，电沉积修复后，砂浆致密性增强，硫酸镁沉积作用最明显。
Abstract：The corrosion of steel reinforcement significantly shortens the lifespan of concrete structures. Based on electrochemical migration rust inhibitors, a dual-effect repair method involving the use of both electrochemical migration and electrodeposition is proposed to repair corroded steel reinforcement and prevent secondary corrosion. The dual-effect repair effects were assessed through electrochemical impedance spectroscopy tests and chloride ion titration. The impact of dual-effect repair on the mortar performance was evaluated through capillary water absorption tests. The underlying mechanisms of dual-effect repair were analyzed using XRD and SEM tests. The results demonstrate that dual-effect repair significantly reduces chloride ion content inside the mortar. The corrosion resistance of the steel reinforcement improves by two orders of magnitude after repair, with ethanolamine + magnesium sulfate exhibiting the best repair performance. Additionally, after electrodeposition repair, the mortar's compactness is enhanced, and the magnesium sulfate deposition is most pronounced.
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基本信息:
DOI：
中图分类号:TU375;TU528
引用信息:
[1]王柱仁,熊传胜,金祖权等.迁移阻锈剂和电沉积双效修复对钢筋耐腐蚀性能影响研究[J].青岛理工大学学报,2024,45(06):18-25.
基金信息:
国家自然科学基金资助项目(52379126;U22A20229); 青岛市科技计划项目(23-2-1-248-zyyd-jch)