盐冻对钢筋混凝土杂散电流腐蚀的影响研究_《混凝土与水泥制品》杂志社

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盐冻对钢筋混凝土杂散电流腐蚀的影响研究

Effect of Salt-Freezing on Stray Current Corrosion of Reinforced Concrete

2023年第5期

混凝土；杂散电流；盐冻；冻融循环；电阻率；腐蚀

Concrete; Stray current; Salt-freezing; Freeze-thaw cycle; Resistivity; Corrosion

2023年第5期

10.19761/j.1000-4637.2023.05.012.05

国家重点研发计划项目（2018YFC0406702）；安徽省教育厅高校自然科学研究项目（KJ2021A1337）。

庄华夏1,2，蔡跃波2，陈迅捷2，韦华2

1.芜湖职业技术学院，安徽芜湖 241003；2.南京水利科学研究院，江苏南京 210029

庄华夏1,2，蔡跃波2，陈迅捷2，韦华2

庄华夏,蔡跃波,陈迅捷,等.盐冻对钢筋混凝土杂散电流腐蚀的影响研究[J].混凝土与水泥制品,2023(5):12-16.

ZHUANG H X,CAI Y B,CHEN X J,et al.Effect of Salt-freezing on Stray Current Corrosion of Reinforced Concrete[J].China Concrete and Cement Product,2023(5):12-16.

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摘要：设计了盐冻时混凝土杂散电流腐蚀试验和盐冻后混凝土电阻率测试试验，通过测试杂散电流密度和混凝土电阻率研究了盐冻时混凝土杂散电流的腐蚀规律及盐冻后混凝土电阻率的变化规律，揭示了盐冻对混凝土杂散电流腐蚀的影响。结果表明：盐冻时，杂散电流密度与温度正相关，冷冻过程的混凝土杂散电流腐蚀比融化过程严重，而连续冻融循环将减小混凝土杂散电流腐蚀；盐冻后，混凝土的电阻率显著降低，并随冻融循环次数的增加呈指数衰减趋势，氯盐加速了混凝土电阻率的降低；氯盐浓度越大，钢筋杂散电流腐蚀越严重。 Abstract: The stray current corrosion test of concrete during salt-freezing and the concrete resistivity test after salt-freezing were designed. The stray current density and concrete resistivity were measured to explore the rule of stray current corrosion during salt-freezing and the change rule of concrete resistivity after salt-freezing. The effects of salt-freezing on stray current corrosion of concrete were revealed. The results show that the stray current density is positively correlated with temperature during salt-freezing, the stray current corrosion of concrete is more serious in freezing process than that in thawing process, and the continuous freeze-thaw cycle will reduce the stray current corrosion of concrete. After salt-freezing, the concrete resistivity decreases significantly and decreases exponentially with the number of freeze-thaw cycles. Chlorine salt accelerates the reduction of concrete resistivity. The higher the concentration of chlorine salt, the greater the stray current corrosion of reinforcement.

英文名 : Effect of Salt-Freezing on Stray Current Corrosion of Reinforced Concrete

刊期 : 2023年第5期

关键词 : 混凝土；杂散电流；盐冻；冻融循环；电阻率；腐蚀

Key words : Concrete; Stray current; Salt-freezing; Freeze-thaw cycle; Resistivity; Corrosion

刊期 : 2023年第5期

DOI : 10.19761/j.1000-4637.2023.05.012.05

文章编号 :

基金项目 : 国家重点研发计划项目（2018YFC0406702）；安徽省教育厅高校自然科学研究项目（KJ2021A1337）。

作者 : 庄华夏1,2，蔡跃波2，陈迅捷2，韦华2

单位 : 1.芜湖职业技术学院，安徽芜湖 241003；2.南京水利科学研究院，江苏南京 210029

庄华夏1,2，蔡跃波2，陈迅捷2，韦华2

庄华夏,蔡跃波,陈迅捷,等.盐冻对钢筋混凝土杂散电流腐蚀的影响研究[J].混凝土与水泥制品,2023(5):12-16.

ZHUANG H X,CAI Y B,CHEN X J,et al.Effect of Salt-freezing on Stray Current Corrosion of Reinforced Concrete[J].China Concrete and Cement Product,2023(5):12-16.

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摘要

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结论

参考文献

引用本文

Abstract: The stray current corrosion test of concrete during salt-freezing and the concrete resistivity test after salt-freezing were designed. The stray current density and concrete resistivity were measured to explore the rule of stray current corrosion during salt-freezing and the change rule of concrete resistivity after salt-freezing. The effects of salt-freezing on stray current corrosion of concrete were revealed. The results show that the stray current density is positively correlated with temperature during salt-freezing, the stray current corrosion of concrete is more serious in freezing process than that in thawing process, and the continuous freeze-thaw cycle will reduce the stray current corrosion of concrete. After salt-freezing, the concrete resistivity decreases significantly and decreases exponentially with the number of freeze-thaw cycles. Chlorine salt accelerates the reduction of concrete resistivity. The higher the concentration of chlorine salt, the greater the stray current corrosion of reinforcement.

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盐冻对钢筋混凝土杂散电流腐蚀的影响研究

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