Detecting the Efficiency of Cathodic Protection in Reinforced Concrete by Use of Galvanostatic Pulse Technique

Abstract:

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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.

Info:

Periodical:

Edited by:

Yiwang Bao, Li Tian and Jianghong Gong

Pages:

584-589

DOI:

10.4028/www.scientific.net/AMR.177.584

Citation:

J. Xu and W. Yao, "Detecting the Efficiency of Cathodic Protection in Reinforced Concrete by Use of Galvanostatic Pulse Technique", Advanced Materials Research, Vol. 177, pp. 584-589, 2011

Online since:

December 2010

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$35.00

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