中文摘要：

在分析再碱化机理的基础上，应用电化学原理和电渗原理，对在直流电的作用下，在阴极钢筋处发生电化学反应产生氢氧根离子和碳酸钠电解质向钢筋周围的混凝土渗透，从而恢复钢筋周围混凝土的高pH值的这2个过程进行推证，在假定两者相对独立的情况下进行叠加，建立了碳化混凝土再碱化过程控制理论模型。结果表明：只要通过试验确定电离常数k和电位ξ，便可运用该模型实现对混凝土再碱化过程的控制，为该技术的推广应用奠定了理论基础。

英文摘要：

On the basis of the analysis of the realkalization mechanism, the electrolysis and eletroosmosis theories were applied to deduce two processes, ie hydroxyl ions were produced by the eleetrocatalysis hardening at the cathode steel bar and the sodium carbonate electrolyte moved into the concrete around the steel bars which served to recover high pH value of the concrete around the steel bars were studied under the effect of direct current. Assuming that these two processes were independent on each other, their effects were added and a control theory model in process of realkalization for carbonated concrete was established which provided the theoretical base for the further application of the technique. The results show that using the model, realkalization process control for concrete could be realized by determing parameters k and ξ.