模拟混凝土孔隙溶液pH值对钢筋表面钝化膜的影响

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发布时间：2020-01-06 00:00:00

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模拟混凝土孔隙溶液pH值对钢筋表面钝化膜的影响

Influence of pH Value of Simulated Concrete Pore Solution on Passive Film of Steel Bar

2021年第12期

混凝土；钢筋钝化膜；孔隙溶液；pH值；耐腐蚀性

Concrete; Passive film of steel bar; Pore solution; pH value; Corrosion resistance

2021年第12期

10.19761/j.1000-4637.2021.12.001.06

“十三五”国家重点研发计划项目（2016YFB0303504）。

林崇雄

中交三航（厦门）工程有限公司，福建厦门 361006

林崇雄

林崇雄.模拟混凝土孔隙溶液pH值对钢筋表面钝化膜的影响[J].混凝土与水泥制品,2021(12):1-5,11.

LIN C X.Influence of pH Value of Simulated Concrete Pore Solution on Passive Film of Steel Bar[J].China Concrete and Cement Products,2021(12):1-5,11.

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摘要：通过自腐蚀电位、电化学阻抗谱和线性极化曲线测试研究了模拟混凝土孔隙溶液pH值（13.5、12.5、11.5）对钢筋表面钝化膜的影响。结果表明：三种测试方法得出的结论基本一致，相同Cl-含量的模拟混凝土孔隙溶液pH值越高，钢筋表面钝化膜腐蚀破坏越小；提高孔隙溶液的pH值，能显著提高钢筋表面钝化膜的耐腐蚀性能；通过预钝化处理钢筋和提高混凝土孔隙溶液的碱性，可显著提高混凝土工程中钢筋的抗腐蚀性能。 Abstract: The influence of the pH value(13.5、12.5、11.5) of the simulated concrete pore solution on the passive film of steel bar was studied by the corrosion potential, electrochemical impedance spectroscopy and linear polarization curves tests. The results show that the three kinds of test methods have the same conclusion basically. The passive film on the surface of the steel bar has lower corrosion trend in the simulated concrete pore solution with same chloride ion content and higher pH value. By improving the alkalinity of the pore solution, the corrosion resistance of the passive film on the surface of the steel rebar can be significantly improved. By pre-passivating the steel bar and improving the alkalinity of the concrete pore solution, the corrosion resistance of the steel bars in the concrete can be significantly enhanced.

英文名 : Influence of pH Value of Simulated Concrete Pore Solution on Passive Film of Steel Bar

刊期 : 2021年第12期

关键词 : 混凝土；钢筋钝化膜；孔隙溶液；pH值；耐腐蚀性

Key words : Concrete; Passive film of steel bar; Pore solution; pH value; Corrosion resistance

刊期 : 2021年第12期

DOI : 10.19761/j.1000-4637.2021.12.001.06

文章编号 :

基金项目 : “十三五”国家重点研发计划项目（2016YFB0303504）。

作者 : 林崇雄

单位 : 中交三航（厦门）工程有限公司，福建厦门 361006

林崇雄

林崇雄.模拟混凝土孔隙溶液pH值对钢筋表面钝化膜的影响[J].混凝土与水泥制品,2021(12):1-5,11.

LIN C X.Influence of pH Value of Simulated Concrete Pore Solution on Passive Film of Steel Bar[J].China Concrete and Cement Products,2021(12):1-5,11.

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摘要

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结论

参考文献

引用本文

Abstract: The influence of the pH value(13.5、12.5、11.5) of the simulated concrete pore solution on the passive film of steel bar was studied by the corrosion potential, electrochemical impedance spectroscopy and linear polarization curves tests. The results show that the three kinds of test methods have the same conclusion basically. The passive film on the surface of the steel bar has lower corrosion trend in the simulated concrete pore solution with same chloride ion content and higher pH value. By improving the alkalinity of the pore solution, the corrosion resistance of the passive film on the surface of the steel rebar can be significantly improved. By pre-passivating the steel bar and improving the alkalinity of the concrete pore solution, the corrosion resistance of the steel bars in the concrete can be significantly enhanced.

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模拟混凝土孔隙溶液pH值对钢筋表面钝化膜的影响

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