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一、钢筋腐蚀的一般概念近年来,国内外对钢筋腐蚀的问题颇为重视,并进行了大量试验研究工作。引起钢筋腐蚀的原因大致有两种:①介质直接破坏混凝土保护层,使钢筋裸露,以致腐蚀;②介质并不直接破坏混凝土,而是改变混凝土的液相成分,降低其对钢筋的保护能力,使钢筋腐蚀发生在混凝土内部。后者腐蚀的速度往住比处于同样介质作用下裸露的钢筋更快。
First, the general concept of corrosion of steel bars In recent years, domestic and foreign emphasis on corrosion of steel bars, and conducted a large number of experimental research. There are roughly two reasons that cause corrosion of steel bars: 1 The medium directly destroys the concrete protective layer and causes bare steel bar to cause corrosion. 2 The medium does not directly destroy the concrete, but changes the liquid phase composition of the concrete and reduces its protection ability to the steel bars. Rebar corrosion occurs inside the concrete. The latter corrodes at a faster rate than the bar exposed by the same medium.