混凝土中钢筋腐蚀的测定与评价方法

Measuring Method and Evaluation Method of Steel Corrosion of Reinforced Concrete

综述了混凝土中钢筋腐蚀的测定与评价方法,包括腐蚀面积率、失重率、断面缩减率、自然电位、线性极化电阻、交流阻抗谱(EIS)、腐蚀电流、混凝土比电阻和四极法等,介绍了各种方法的特点与应用过程中存在的问题,以及国内外的研究现状。研究认为,评价混凝土中钢筋腐蚀应选择合理的测定与评价方法,四极法可以在不破坏混凝土结构的情况下监控混凝土中钢筋锈蚀过程,是未来研究的热点之一。

The measuring method and evaluation method of the steel corrosion of reinforced concrete are reviewed in this paper, cineluding corroded area, lost weight, area reduction ratio, haif-eeli potentials, linear polarization resistance, EIS, irrosion current, resistivity of concrete and four-electrode array. In the meanwhile, some important features and exist issues in evaluation methods are proposed. And the research status at home and abroad is also reviewed. The research shows that, reasonable measuring and evaluation methods should be taken when evaluating the steel corrosion of reinforced concrete. Four-electrode array can monitor the steel corrosion process without damaging the reinforced concrete structure. It is concluded that one of the hot spots of the further research is four-electrode array.