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Comparison of different electrochemical techniques for corrosion-rate determination of zinc-coated reinforcements in simulated concrete pore solutions

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Abstract

The accuracy of three electrochemical laboratory techniques aimed at evaluating the corrosion rate of galvanized rods immersed in solutions is discussed. These techniques are polarization resistance, electrochemical impedance and harmonic analysis. The values of corrosion intensity obtained from these techniques were compared with those obtained gravimetrically. The values of the Stern-Geary constantB obtained by polarization curves and harmonic analysis were compared with one another as well

Resume

Dans cet article, on discute la précision de trois techniques électrochimiques d'évaluation en laboratoire de la vitesse de corrosion de barres galvanisées immergées dans des solutions. Ces techniques sont les suivantes: courant de polarisation, impédance électrochimique et analyse harmonique. On compare les degrés de corrosion obtenus à partir de ces techniques à ceux obtenus par gravimétrie. On compare également les valeurs de la constanteB de Stern-Geary et celles obtenues par les courbes de polarisation et par l'analyse harmonique.

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Authors and Affiliations

  1. Instituto ‘Eduardo Torroja’ de la Construcción y del Cemento, C/Serrano Galvache, s/n, 28033, Madrid, Spain

    A. Macías

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  1. A. Macías
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Macías, A. Comparison of different electrochemical techniques for corrosion-rate determination of zinc-coated reinforcements in simulated concrete pore solutions. Materials and Structures 24, 456–465 (1991). https://doi.org/10.1007/BF02472018

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