• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Electrochemical Science >Influence of Chloride Ions on Corrosion Behavior of Steel Bars in a Simulated Concrete Pore Solution
【24h】

Influence of Chloride Ions on Corrosion Behavior of Steel Bars in a Simulated Concrete Pore Solution

机译：氯离子对模拟混凝土孔隙溶液中钢筋腐蚀行为的影响

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The performance of steel bars deteriorates under chloride corrosion. It is thus essential to study thecorrosion mechanism of different steel bars to better understand the corrosion of steel bars in concretestructures. In this study, electrochemical techniques and scanning electron microscopy are used to studydifferent steel bars in a simulated concrete pore solution after different numbers of days. The findingssuggest that each sample’s free corrosion potential, impedance arc radius, and dispersion parameterdecrease as the corrosion rate increases. When corrosion begins, the passive film remains unchanged,and one time constant is observed. Then, when the passive film is destroyed, two time constants appear.The pits exhibit a stepped structure with a discrete diameter and penetrate to the bottom of the passivelayer. As the corrosion proceeds, the pits begin to overlap. The steel bar’s fractal dimension firstincreases and then decreases. These results describe both the average characteristics and the details ofthe corrosion, providing theoretical guidance for choosing steel bars and monitoring corrosion.
机译：钢筋的性能在氯化物腐蚀下会变差。因此，有必要研究不同钢筋的腐蚀机理，以更好地了解混凝土结构中钢筋的腐蚀情况。在这项研究中，电化学技术和扫描电子显微镜用于研究模拟天数不同的模拟混凝土孔隙溶液中的不同钢筋。研究结果表明，随着腐蚀速率的增加，每个样品的自由腐蚀电位，阻抗弧半径和色散参数均降低。当腐蚀开始时，钝化膜保持不变，并且观察到一个时间常数。然后，当钝化膜被破坏时，出现两个时间常数，凹坑呈现出具有离散直径的阶梯状结构，并穿透到钝化层的底部。随着腐蚀的进行，凹坑开始重叠。钢筋的分形尺寸先增大然后减小。这些结果描述了腐蚀的平均特性和细节，为选择钢筋和监测腐蚀提供了理论指导。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号