碳化混凝土结构的再碱化维修技术

Realkalization Maintenance on the Carbonated Conerete Structures

碳化混凝土的再碱化方法主要应用电渗原理 ,在直流电的作用下 ,使碳酸钠电解质向钢筋周围的混凝土渗透 ,使钢筋周围混凝土再碱化。通过对一根 70余年龄期的钢筋混凝土构件所做的再碱化试验 ,提出了适用于碳化混凝土再碱化维修技术的施工方法及注意事项 ,并提出了相关的理论 。

The electroosmosis principle is applied on realkalization maintenance.The Na 2CO 3 electrolyte pervades into concrete around the steel bar under the action of DC,so the concrete is realkalization.Based on a successful realkalization test on a 70 years old reinforced concrete member,the construction methods and the attentions of the carbonated concrete realkalization maintenance in situ are presented,and the realkalization theory is discussed.The foundation is set up for the widely using of the technology in our country.