Characterization of the Reinforcing Steel Corrosion by Potentialdynamic Scan Approach  

作　　者：乔国富 刘铁军 

机构地区：[1]School of Civil Engineering, Harbin Institute of Technology [2]Shenzhen Graduate School, Harbin Institute of Technology

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2012年第3期418-421,共4页武汉理工大学学报（材料科学英文版）

基　　金：Supported by National Natural Science Foundation of China(Nos.51178154 and 51008098)

摘　　要：Reinforcement corrosion is the major cause of damage and early failure of reinforced concrete structures worldwide with subsequent enormous costs for maintenance, restoration and replacement. Many methods used today for assessment of reinforcement corrosion are based on electrochemical techniques that determine the free corrosion potential or polarization resistance. Most of these methods always consider the B value in Stern-Geary equation as constant. However, B changes with different condition. In this paper, potentialdynamic method is used to characterize the corrosion of reinforcing steel. The corrosion rate of Q235 carbon steel is measured with concrete environment. B is calculated real-time. By this way, the error of reinforcement corrosion rate is minimized.Reinforcement corrosion is the major cause of damage and early failure of reinforced concrete structures worldwide with subsequent enormous costs for maintenance, restoration and replacement. Many methods used today for assessment of reinforcement corrosion are based on electrochemical techniques that determine the free corrosion potential or polarization resistance. Most of these methods always consider the B value in Stern-Geary equation as constant. However, B changes with different condition. In this paper, potentialdynamic method is used to characterize the corrosion of reinforcing steel. The corrosion rate of Q235 carbon steel is measured with concrete environment. B is calculated real-time. By this way, the error of reinforcement corrosion rate is minimized.

关 键 词：concrete structures reinforcing steel CORROSION potentialdynamic scan 

分 类 号：TG174.44[金属学及工艺—金属表面处理]