Materials and Structures

, Volume 29, Issue 5, pp 286–294 | Cite as

Electrochemical noise technique for the prediction of corrosion rate of steel in concrete

  • M. J. Katwan
  • T. Hodgkiess
  • P. D. Arthur
Scientific Reports

Abstract

A research programme was undertaken to examine the limitations and applicability of the Electrochemical Noise Technique (ECN) for the determination of corrosion rates of steel reinforcement. The measurements were made on full-scale reinforced concrete beams under cyclic and static loading and exposed to a corrosive environment. Results from short and long-term tests suggest, rather surprisingly, that for a given test condition equal accuracy in predicting the corrosion rate can be obtained from the standard deviation of the potential noise and the electrode potential. There are indications, however, that valuable qualitative information about the state of corrosion may be obtained by means of potential trace.

Keywords

Corrosion Rate Concrete Beam Electrochemical Noise Potential Noise Potential Trace 

Résumé

Un programme de recherche a été entrepris dans le but d'examiner les limitations et l'applicabilité de la technique du bruit électrochimique (ECN) pour la détermination des taux de corrosion des armatures en acier. Les mesures ont été faites à une grande échelle, sur des poutres en béton armé, sous charge cyclique et statique, et exposées à un environnement corrosif. Les résultats des essais à long et à court terme suggèrent, de manière plutôt surprenante, que pour le cas d'un essai donné, on peut prédire le taux de corrosion avec exactitude à partir de la déviation normale du bruit potentiel et du potentiel d'électrode. Il semble, cependant, que des informations qualitatives de valeur concernant l'état de la corrosion, peuvent être obtenues au moyen de la trace potentielle.

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References

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    Katwan, M. J., ‘Corrosion Fatigue of Reinforced Concrete’ Ph.D. Thesis, University of Glasgow, (Oct. 1988), 525–552.Google Scholar

Copyright information

© RILEM 1996

Authors and Affiliations

  • M. J. Katwan
    • 1
  • T. Hodgkiess
    • 2
  • P. D. Arthur
    • 2
  1. 1.National Center for Construction LabsBaghdadIraq
  2. 2.University of GlasgowGlasgowUK

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