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Performance evaluation of galvanic anodes through laboratory testing and on-site monitoring

conference contribution
posted on 2014-07-23, 08:31 authored by Wayne Dodds, Christian Christodoulou, Chris GoodierChris Goodier, Simon Austin
This study examines the effectiveness of galvanic anodes installed both within the patch repair and surrounding parent concrete through laboratory testing and on-site monitoring. Sodium chloride was added during casting of the laboratory concrete specimens to induce corrosion. The anodes were tested using surface potential mapping at 7 days, 8 months and also 26 months after repair. Site monitoring of galvanic anodes was performed over a period of 215 days. The results showed that galvanic anodes installed in the parent concrete had a greater polarisation effect on the surrounding steel, which is generally considered to be at highest risk, as compared to galvanic anodes installed within the patch repair itself. This was in-line with data obtained from similar installations in full-scale reinforced concrete structures. It was also noted that, with increasing chloride content, the polarisation extent was reduced.

History

School

  • Architecture, Building and Civil Engineering

Published in

RILEM International workshop on performance-based specification and control of concrete durability, RILEM PRO 89

Pages

175 - 182

Citation

DODDS, W. ... et al, 2014. Performance evaluation of galvanic anodes through laboratory testing and on-site monitoring. IN: Bjegovic, D., Beushausen, H., Serdar, M. (eds). Proceedings of the RILEM International Workshop on Performance-Based Specification and Control of Concrete Durability, Zagreb, Croatia, 11th - 13th June 2014, pp.175-182.

Publisher

RILEM Publications S.A.R.L.

Version

  • NA (Not Applicable or Unknown)

Publication date

2014

Notes

This is a conference paper.

ISBN

9782351581353;9782351581360

Language

  • en

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