电化学修复技术在钢筋混凝土结构中的研究及应用

The Application and Progress of Electrochemical Rehabilita-tion Technique for Reinforced Concrete Structures

钢筋混凝土中的钢筋受多种因素影响,所处的稳定环境被破坏时会遭受腐蚀,从而导致混凝土损坏。目前已有多种方法保护混凝土,使其免受或延缓腐蚀。电化学修复是一种新兴的技术,效果较好,作为钢筋混凝土结构修复的新方法以其独有的优点成为各国研究的热点。为此,主要就电化学修复的基本原理、应用、国内外研究现状作了评述,并根据研究中存在的问题提出了一些观点和建议,为后续的研究工作做参考。

A review is provided of the bas-ic principle, application and research progress of electrochemical re-habilitation at home and abroad. It is pointed out that the reinforcingsteel bars in concrete are affected by various factors and liable to cor-rosion due to destruction of stable working environment, causing damage to the concrete. At present many kinds of methods are avail-able to protect the reinforced concrete and prevent or inhibit its cor-rosion. As a new method of repairing reinforced concrete structure, electrochemical rehabilitation technique including cathodic protec-tion, electrochemical realkalizalion and electrochemical chloride re-moval , due to its unique advantages, has become a hotspot over theworld. At the same time, some opinions and advices have been put forward in relation to existent problems in the research of electro-chemical rehabilitation technique for reinforced concrete structure, hoping to provide references for forthcoming researches.