牺牲阳极在核电站钢筋混凝土构筑物维修中的保护效果监测  

Monitoring The Protection Provided by The Anodes Used in Repair of Steel Reinforced Concrete in Nuclear Plant

作　　者：郑秋 单小明 马健[1] 颜永贵[1] ZHENG Qiu;SHAN Xiao-ming;MA Jian;YAN Yong-gui(Daya Bay Nuclear Power Operations And Management Co.,Ltd.Shenzhen 518124,China)

机构地区：[1]大亚湾核电运营管理有限责任公司,广东深圳518124

出　　处：《全面腐蚀控制》2024年第9期88-91,共4页Total Corrosion Control

摘　　要：国内核电站大多靠近海边,受海洋大气环境的影响,钢筋混凝土的腐蚀问题不容忽视,传统局部打补丁的修补方法维修效果不佳,将埋入式牺牲阳极应用于钢筋混凝土结构的局部维修,具有施工简单,无需维护管理,保护效果好等特点,能大大减少重复性维修。本文对局部采用牺牲阳极维修后混凝土中钢筋的电位进行了监测,发现在牺牲阳极布置区域内钢筋电位极化较为明显,钢筋受到了较好的保护,但在布置区域之外,牺牲阳极的保护范围有限。Most nuclear plant near by sea in china,the corrosion of the steel reinforced concrete is non-ignorable because of the marine atmospheric environment.The traditional repair method namely“local patching”is not so effective.It can significantly reduce the repetitive repair to use the embedded anode for the steel reinforced concrete,what is more,it has the advantages of simple installation,no maintenance and management in the future,and it can provide more effective protection for steel in steel reinforced concrete.It was found that the potential of reinforcing bars descend significantly in the area installed embedded anode,and while beyond it descend not so significantly by monitoring the potential of the steel bars.It can be concluded that the reinforcing bars are well protected in the area of repair with the anodes.

关 键 词：钢筋混凝土 腐蚀 牺牲阳极 阴极保护 极化电位 

分 类 号：TU375[建筑科学—结构工程]