对已碳化混凝土定期检测混凝土砂浆试块中钢筋的自然腐蚀电位和极化曲线，并根据极化曲线判断再碱化效果研究了电化学再碱化的相关问题.结果表明，单纯碳化作用只能使钢筋周围混凝土的pH值降低，导致钢筋表面的钝化膜遭到破坏，但是并不加速钢筋的腐蚀速度；电化学再碱化处理能使碳化混凝土中的钢筋自然电位回复到碳化以前水平，使活化钢筋重新处于钝化状态；再碱化处理之后要弛豫一段时间才可进行钢筋电化学性能的检测.
Concrete carbonization is one of the major causes of rebar corrosion in reinforced concrete structures.In this article a study was carried out on the electrochemical realkalization for carbonized concretes.During the experiment,the free corrosion potential and polarization curves of rebar in concrete were measured regularly. According to the polarization curves,the effect of realkalization can be estimated.
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