Assessment of the Effectiveness of Butler-Volmer Equation to Predict Corrosion Rate in Cathodically Protected Structures

Arpit Goyal, Homayoon Sadeghi Pouya, Esmaiel Ganjian

    Research output: Chapter in Book/Report/Conference proceedingConference proceedingpeer-review

    1 Citation (Scopus)
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    Abstract

    Various reinforced concrete structure around the world, such as bridges are exposed to aggressive chloride environment, hence, start to corrode after short service period. The main reason for the deterioration of these structures is corrosion of steel
    reinforcement due to chlorides. Poor quality concrete and low cover are contributory factors. The cost of repairing or replacing the deteriorated structure has become the major concern for the asset owners. One of the most successful and substantiated
    techniques of protecting structure from corrosion is cathodic protection (CP). The BSEN ISO 12696 performance criteria followed for monitoring CP efficiency is evolved from the experimental analysis and may not be always correct. This paper suggests a improved method for monitoring corrosion rate through Butler Volmer equation using the polarization data. This method has been applied to one year CP monitoring data from a viaduct site. It was observed that corrosion rate was reducing with time, showing the effectiveness of CP to protect the steel in structure. Prediction of corrosion rate of the steel from potential shift forms the basis for the improved CP performance criterion for reinforced concrete structures. Information about the actual corrosion rate would be beneficial to predict the true state of steel reinforcement and accordingly apply a suitable repair technique to extend the service life of RC structures.
    Original languageEnglish
    Title of host publicationFifth International Conference on Sustainable Construction Materials and Technologies (SCMT5)
    EditorsEshmaiel Ganjian, Peter Claisse, Mukesh Limbachiya, Mohammadreza Bagheri
    Pages353-363
    Number of pages10
    Volume2
    Publication statusPublished - 15 Jul 2019
    EventFifth International Conference on Sustainable Construction Materials and Technologies - Kingston upon Thames, United Kingdom
    Duration: 14 Jul 201917 Jul 2019
    Conference number: 5
    https://www.kingston.ac.uk/events/item/2839/14-jul-2019-fifth-international-conference-on-sustainable-construction-materials-and-technologies-scmt5/

    Publication series

    Name
    ISSN (Print)2515-3048
    ISSN (Electronic)2515-3056

    Conference

    ConferenceFifth International Conference on Sustainable Construction Materials and Technologies
    Abbreviated titleSCMT5
    CountryUnited Kingdom
    CityKingston upon Thames
    Period14/07/1917/07/19
    Internet address

    Bibliographical note

    Copyright © and Moral Rights are retained by the author(s) and/ or other copyright owners. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This item cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder(s). The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders.

    Keywords

    • Corrosion
    • Cathodic Protection
    • Potential Shift
    • Butler Volmer equation
    • Corrosion Rate

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