Prediction of Reinforcement Corrosion based on Electrochemical Equivalent under Loading

• Published in: Journal of Wuhan University of Technology. Materials science edition 2010-08, Vol.25 (4), p.708-711
• Main Authors: Teng, Haiwen, Li, Yue, Yang, Senmao, Huang, Ying, Huo, Da
• Format: Article
• Language: English
• Subjects: Chemistry and Materials Science; Corrosion; Materials Science; Studies; 当量系数; 电化学; 腐蚀电流密度; 腐蚀预测; 负荷水平; 钢筋腐蚀
• ISSN: 1000-2413; 1993-0437
• DOI: 10.1007/s11595-010-0076-1

Experiment was carried out to simulate different loading level elements under coupling of stray current and 5% chlorine salt solution. When calculating corrosion of reinforcement, the influence of loading should be considered based on the first law of Faraday electrolysis. The current density of the corrosion was measured by the linear polarization resistance method. The function of corrosion current density was obtained by nonlinear fitting method, and the influence coefficient of loading level to electrochemical equivalent was obtained base on the function of corrosion current density. The experimental results show that the corrosion current density increases with stress ratio of concrete structures. The reinforcement corrosion weight can be calculated through the influence coefficients of electrochemical equivalent and the result is in line with the actual situation.