氯离子对模拟混凝土孔隙液中钢筋腐蚀行为的影响

刘玉; 杜荣归

doi:10.61558/2993-074X.1664

电化学 >

2005 , Vol. 11 >Issue 3: 333 - 336

DOI: https://doi.org/10.61558/2993-074X.1664

研究论文

氯离子对模拟混凝土孔隙液中钢筋腐蚀行为的影响

刘玉 ,
杜荣归

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固体表面物理化学国家重点实验室,固体表面物理化学国家重点实验室,固体表面物理化学国家重点实验室厦门大学化学系福建厦门361005 ,厦门大学化学系福建厦门361005 ,厦门大学化学系福建厦门361005

收稿日期: 2005-08-28

修回日期: 2005-08-28

网络出版日期: 2005-08-28

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Effect of Chloride Ions on the Corrosion Behavior of Reinforcing Steel in Simulated Concrete Pore Solutions

LIU Yu ,
DU Rong-gui~

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(*), LIN Chang-jian(State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005,China

Received date: 2005-08-28

Revised date: 2005-08-28

Online published: 2005-08-28

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摘要

应用动电位扫描法研究钢筋在模拟混凝土孔隙液中的腐蚀电化学行为以及氯离子的影响作用,并根据阳极极化曲线的变化揭示钢筋表面钝化膜的击穿电位及其变化规律,得出当溶液pH值分别为12.50和12.00时,由氯离子侵蚀引起的钢筋局部腐蚀,其钝化膜击穿电位突降的浓度临界值.

关键词： 钢筋; 钝化; 动电位极化; 氯离子

本文引用格式

刘玉 , 杜荣归 . 氯离子对模拟混凝土孔隙液中钢筋腐蚀行为的影响[J]. 电化学, 2005 , 11(3) : 333 -336 . DOI: 10.61558/2993-074X.1664

Abstract

The potentiodynamic anodic polarization was used to study the corrosion behavior of the reinforcing steel in simulated concrete pore solutions with different pH and chloride ion concentrations. The effect of chloride ions on passivity breakdown of the steel was examined by measuring the breaking potentials of reinforcing steel, and the critical chloride concentrations for depassivation were found in simulated concrete pore solutions at pH 12.50 and pH 12.00.

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