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Responsive behaviour of galvanic anodes in concrete and the basis for its utilisation

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journal contribution
posted on 14.10.2011, 12:52 by S.P. Holmes, Geoffrey Wilcox, Peter Robins, Gareth K. Glass, A.C. Roberts
In this study, a unique concrete specimen was used to analyse the response of embedded sacrificial zinc and steel anodes to rainfall and fluctuations in temperature. Current from the zinc and steel anodes increased when the environment was aggressive, showing that the required protection current depends on the present level of corrosion risk. A basis for using the ‘responsive behaviour’ of galvanic anodes is provided by the protective effects of pit re-alkalisation and pH maintenance. By contrast, protection based on achieving adequate polarisation inhibits the use of responsive behaviour and galvanic anodes might only deliver adequate polarisation in aggressive environments.

History

School

  • Architecture, Building and Civil Engineering

Citation

HOLMES, S.P. ... et al, 2011. Responsive behaviour of galvanic anodes in concrete and the basis for its utilisation. Corrosion Science, 53 (10), pp. 3450-3454

Publisher

© Elsevier

Version

AM (Accepted Manuscript)

Publication date

2011

Notes

This article was published in the journal, Corrosion Science [© Elsevier]. The definitive version is available at: http://www.sciencedirect.com/science/article/pii/S0010938X11003441

ISSN

0010-938X

Language

en