Detecting the Efficiency of Cathodic Protection in Reinforced Concrete by Use of Galvanostatic Pulse Technique
The galvanostatic pulse technique has been applied in detecting the efficiency of cathodic protection in reinforced concrete based on the investigation on the response of galvanostatic pulse to the corrosion state of steel and perturbation magnitude of signal. Two data analysis methods were introduced to determine the corrosion rate. It is shown that the selection of perturbation magnitude of signal to be applied depends strongly on the corrosion state of steel. Too small current makes it difficult to separate the potential signal from background noise,whereas higher current results in intensive polarization. Thus, neither of two is beneficial for the data processing. The corrosion rate values obtained from chronopotentiometry method are on the low side during cathodic protection monitored by higher perturbation signal and correction of data employing polarization conversion method is suggested.
Galvanostatic pulse Reinforced concrete Corrosion Cathodic protection
Xu Jing Yao Wu
Key Laboratory of Advanced Civil Engineering Materials (Tongji University), Ministry of Education,Sh Key Laboratory of Advanced Civil Engineering Materials(Tongji University), Ministry of Education,Sha
国际会议
Frist Annual Meeting on Testing and Evaluation of Inorganic Materials(第一届全国无机材料测试与评价学术年会)
南昌
英文
584-589
2010-04-28（万方平台首次上网日期，不代表论文的发表时间）