混凝土中结合氯离子研究综述

Review of Researches on Binding Chloride Ions in Concrete

混凝土中氯离子的结合会影响其侵蚀进程。且结合氯离子并不稳定,在酸化、碳化、化学侵蚀与通电作用等情况下会失稳释放,从水泥结合氯离子的机理、结合能力及结合氯离子稳定性等方面对中外研究现状进行综述。提出了对于某些因素需要建立更合理的评价标准,需要深入研究多因素耦合作用及降低失稳氯离子对钢筋腐蚀危害的研究建议。

The bound of chloride ions in concrete could affect the erosion process. Moreover, the binding chloride ion was not stable and would be released under the conditions of acidification, carbonization, chemical erosion, and electric field. Developments in research in China and the world are reviewed from the aspects of its bonding mechanism, binding capacity, and stability. Some issues are put forward for further research, including the effect of multi-factor coupling and the method of reducing the corrosion hazard of released chloride ions in concrete structures.