不同表面状态下钢筋的腐蚀行为研究
CORROSION BEHAVIORS OF REBARS WITH DIFFERENT SURFACE STATES
摘 要
采用实验室加速腐蚀试验、电化学测量技术研究了不同表面状态下钢筋的腐蚀行为.结果表明：表面带有氧化皮的钢筋的腐蚀行为明显区别于裸表面钢筋.在气相加速腐蚀试验中,裸表面钢筋比氧化皮钢筋有较大的腐蚀失重量；在混凝土模拟孔隙液中,带氧化皮钢筋和端面钢筋(裸钢筋)一样可以在高碱性环境中完全钝化,但随着溶液中Cl-含量上升,钢筋裸表面的钝化膜更易受到破坏,氧化皮钢筋相对端面钢筋维钝电流密度明显减小,破裂电位明显正移,表现出较好的抗Cl-性能.
腐蚀
电化学技术
表面
Rebar
Corrosion
Electrochemical technique
Surface
Abstract
The corrosion behavior of rebars with different surface states was studied by electrochemical technique and accelerated atmospheric corrosion tests.The reinforcing steel with different surface states had different corrosion characteristics.In the accelerated laboratory tests,the steel with oxide skin had larger corrosion weight loss than the steel with nude surface.In the simulated concrete solutions with no salt,both steels were protected.When the concentration of NaCl increased,the corrosion behavior of the steel varied considerably,and the corrosion rate increased,however,the steel with oxide skin showed better corrosion resistance than the steel with nude surface.
中图分类号 TG174.3
所属栏目 试验研究
基金项目 国家自然科学基金项目(50371011)
收稿日期 2005/9/21
修改稿日期
网络出版日期
作者单位点击查看
引用该论文: XING Dong-lun,HE Ji-quan,WU Bo,WAN Qiang-mao. CORROSION BEHAVIORS OF REBARS WITH DIFFERENT SURFACE STATES[J]. Corrosion & Protection, 2006, 27(7): 325～327
共有人对该论文发表了看法，其中：
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】Mehta P K.Concrete durability-fifty years progress[A].Proc of 2nd Inter Conf.on Concrete Durability[C].ACI SPI26-1,1991.1-31.
【2】Kitowski C J,Wheat H G.Effect of chlorides on reinforcing steel exposed to simulated concrete solutions[J].Corrosion,1997,53(3):216-226.
【2】Kitowski C J,Wheat H G.Effect of chlorides on reinforcing steel exposed to simulated concrete solutions[J].Corrosion,1997,53(3):216-226.
相关信息
