Research Articles | Challenge Journal of Concrete Research Letters

Empirical Model for Evaluation of Concrete Corrosion Current Density

Saha Dauji


In health evaluation of existing concrete structures, the state of reinforcement corrosion needs to be ascertained without causing distress to the structure, and one indirect approach is to correlate the resistivity of concrete to the corrosion current density and thus to the corrosion. Three models reported in literature are analyzed in this paper for their accuracy, and a new approach with different models for different ranges of resistivity are proposed which performs with better accuracy. The strengths and the limitations of the different models are discussed.


corrosion current; concrete resistivity; reinforcement corrosion

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