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Long-term performance of hybrid anodes for cathodic protection of reinforced concrete

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conference contribution
posted on 05.02.2019, 11:15 by W Dodds, Christian Christodoulou, Chris Goodier
© 2018 The Authors, published by EDP Sciences. The long-term performance of hybrid anode corrosion protection systems (UK invention disclosed in Patent GB2426008B) was investigated on six bridge structures as part of a holistic approach to corrosion risk management, using the performance criteria in ISO BS EN 12696:2016. The aim of the study was to review the effectiveness of current design approaches to meet the residual service life when the anodes are operating in the galvanic phase. This was achieved by analysing data on the general condition of the structures, the ongoing performance of the installed hybrid anodes, and assessing the subsequent corrosion risk. It was found that the six structures were generally in good condition, 1 to 8 years after refurbishment works, with low associated corrosion risk in areas protected by the hybrid anode systems. This is a positive finding for the wider implementation of hybrid anode systems as an alternative corrosion management technique. The reinforcement in the protected areas remained predominately in a passive condition, with calculated corrosion rates below the ISO 12696:2016 recommended threshold of 2mA/m2

History

School

  • Architecture, Building and Civil Engineering

Published in

International Conference on Concrete Repair, Rehabilitation and Retrofitting (ICCRRR 2018) MATEC Web of Conferences

Volume

199

Pages

? - ? (7)

Citation

DODDS, W., CHRISTODOULOU, C. and GOODIER, C.I., 2018. Long-term performance of hybrid anodes for cathodic protection of reinforced concrete. MATEC Web of Conferences, 199: 05003.

Publisher

© The Authors. Published by EDP Sciences

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution 4.0 International (CC BY 4.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/ by/4.0/

Acceptance date

01/04/2018

Publication date

2018

Notes

This paper was presented at the International Conference on Concrete Repair, Rehabilitation and Retrofitting (ICCRRR 2018), Cape Town, 19-21st Nov. This is an Open Access paper. It is published by EDP Sciences under the Creative Commons Attribution 4.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/

eISSN

2261-236X

Language

en

Location

cape town

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