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A new arrangement of galvanic anodes for the repair of reinforced concrete structures

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posted on 19.11.2013 by Christian Christodoulou, John Webb, Chris Goodier, Simon Austin, Gareth K. Glass
Discrete galvanic anodes are traditionally embedded in the patch repairs of steel reinforced concrete (RC) structures to offer corrosion prevention. This research investigated the performance of galvanic anodes installed in the parent concrete surrounding the patch repair, in order to explore the performance of such a new arrangement and identify its potential for wide-scale application. This arrangement was tested on a RC multi-story car park and a RC bridge, with both suffering from chloride-induced corrosion of the reinforcement. The performance of the anodes was assessed using close-interval potential mapping for 215 days after installation. The results indicate that the anodes polarised the steel at a significant distance away from the patch repair interface, up to 600 mm in some cases. It illustrates that such an arrangement may be advantageous when repairing RC structures as the corrosion prevention can be targeted at the steel in the surrounding parent concrete, which is traditionally considered to be at higher risk due to incipient anode development.

History

School

  • Architecture, Building and Civil Engineering

Research Unit

  • Centre for Innovative and Collaborative Engineering (CICE)

Citation

CHRISTODOULOU, C. ... et al, 2014. A new arrangement of galvanic anodes for the repair of reinforced concrete structures. Construction and Building Materials, 50, pp. 300-307.

Publisher

© Elsevier

Version

AM (Accepted Manuscript)

Publication date

2014

Notes

This is the author’s version of a work that was accepted for publication in Construction and Building Materials. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published at: http://dx.doi.org/10.1016/j.conbuildmat.2013.09.062

ISSN

0950-0618

Language

en

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