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Investigations on the incipient anode phenomenon following patch repairs for reinforced concrete structures

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conference contribution
posted on 14.11.2012, 14:26 by Christian Christodoulou, Chris Goodier, Simon Austin, Gareth K. Glass, John Webb
Patch repairs are a common repair technique for corrosion-damaged reinforced concrete structures. However, this repair method is sometimes associated with limited durability and in many cases further corrosion damage has been noted around the repaired patches, a phenomenon known as the “incipient anode” effect. The aim of this work was to examine the onsite performance of patch repairs from a full-scale reinforced concrete structure in order to identify the factors affecting the formation of incipient anodes. The results indicate that even after 250 days following application of the repair, the steel within several of the repairs investigated retained more negative potentials than the surrounding steel in the parent concrete, indicating that the formation of incipient anodes is not necessarily attributed to an electrochemical imbalance.

History

School

  • Architecture, Building and Civil Engineering

Research Unit

  • Centre for Innovative and Collaborative Engineering (CICE)

Citation

CHRISTODOULOU, C. ... et al., 2012. Investigations on the incipient anode phenomenon following patch repairs for reinforced concrete structures. IN: Ferreira, R.M., Gulikers, J. and Andrade, C. (eds.) Proceedings of VTT TECHNOLOGY 65: V International PhD Student Workshop on Durability of Reinforced Concrete From Composition to Service Life Design, Helsinki, Finland, 2012, pp. 24-31.

Publisher

© VTT

Version

AM (Accepted Manuscript)

Publication date

2012

Notes

This is a conference paper for the 5th International PhD Student Workshop – Durability of Reinforced Concrete, Finland 9-10 February 2012.

Language

en

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