Print Email Facebook Twitter Application of Electrochemical Impedance Spectroscopy in the Evaluation of Corrosion and Cathodic Protection in Reinforced Concrete Title Application of Electrochemical Impedance Spectroscopy in the Evaluation of Corrosion and Cathodic Protection in Reinforced Concrete Author Koleva, D.A. Van Breugel, K. De Wit, J.H.W. Fraaij, A.L.A. Boshkov, N. Faculty Delft University of Technology Date 2007-12-31 Abstract The electrochemical behavior of steel reinforcement in conditions of corrosion and cathodic protection (CP) was studied, using electrochemical impedance spectroscopy (EIS) and compared to reference (non-corroding) conditions. Polarization resistance (PR) method and potentio-dynamic polarization (PDP) were employed as well, in addition to AC 2 pin electrical resistance monitoring, thus deriving a comparison of the involved parameters. It was found out that EIS is readily applicable for evaluating electrochemical behavior of the steel surface not only for corroding or passive state, but also in conditions of CP, although the interpretation of derived parameters is not straightforward and is related to the properties of the product layers, formed on the steel surface in the different conditions. The evaluation of the electrochemical behavior of the steel surface, should take into account the crystallinity, morphology and composition of the surface layers, which were investigated by scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDAX). To reference this document use: http://resolver.tudelft.nl/uuid:26899bbc-7683-44be-9063-06d26d4abf70 DOI https://doi.org/10.1149/1.2408979 Publisher The Electrochemical Society ISSN 1938-5862 Source ECS Transactions, 2 (17), 2007 Part of collection Institutional Repository Document type journal article Rights © 2007 The Electrochemical Society Files PDF Koleva_2007.pdf 844.72 KB Close viewer /islandora/object/uuid:26899bbc-7683-44be-9063-06d26d4abf70/datastream/OBJ/view