养护期电化学除氯提高含氯盐混凝土耐久性的探索与试验  

Experimental research on the improvement effect of ECE treatment on durability of early concrete with chloride

作　　者：李明明 陈春雷 毛江鸿[2] 杨超 李舒灵 高原[2] 沈建生[2] 

机构地区：[1]浙江省二建建设集团有限公司,浙江宁波315002 [2]浙江大学宁波理工学院,浙江宁波315100

出　　处：《混凝土》2018年第1期12-14,共3页Concrete

基　　金：国家科技支撑计划项目(2015BAL02B03);宁波市科技惠民项目(2016C51024);宁波市自然科学基金(2016A610215);浙江省质量技术监督系统科研计划(20160137);浙江省交通运输厅交通工程建设科研计划(2015J02)

摘　　要：高氯盐环境使得钢筋混凝土结构提前失效,电化学除氯技术是钢筋混凝土耐久性修复的重要方法,可有效排除保护层中的氯离子。探索了钢筋混凝土养护期介入电化学除氯技术,优化试件内部埋置的阴极电极,探究保护层内氯离子迁移效率情况。检测试件通电3、7、14 d后钢筋混凝土表面不同位置沿深度方向的残余氯离子浓度,结果表明在养护期除氯效率高且氯离子迁移相对均匀。High-corrosion-rate environment makes the service life of reinforced concrete structure ahead of time.Electrochemical chloride extraction （ ECE ） technology is an important method for reinforced concrete durability repair, which can effectively remove the chloride ions on the protective layer.In this experiment,the migration efficiency of the chloride ion in the protective layer was investigated by optimizing the cathode electrode embedded in the specimen by electrochemical chloride extraction technology during the curing period of reinforced concrete.After electrified 3,7,14 days, the residual chlorine on the surface was detected at different positions along the depth.The results show that the chlorine removal efficiency is high and the chloride ion is migrating relatively uniform during the curing period.

关 键 词：海洋环境 混凝土 耐久性 电化学除氯 

分 类 号：TU528.064[建筑科学—建筑技术科学]