journal article·2011-10Open access

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

S.P. Holmes, G.D. Wilcox, P.J. Robins, G.K. Glass, A.C. Roberts

Corrosion Science· Volume 53· Issue 10

Abstract

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.
Source: openaire · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: Concrete Corrosion and Durability · Smart Materials for Construction · Corrosion Behavior and Inhibition

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

References (21)

Show source-provided references
1. British Standard BS EN 12696:2000, Cathodic Protection of Steel in Concrete, British Standards Institution, 1999.
2. Hybrid corrosion protection for chloride contaminated concrete10.1680/coma.2008.161.4.163 ↗
3. Assessing the long term benefits of impressed current cathodic protection10.1016/j.corsci.2010.04.018 ↗
4. F.J. Presuel-Moreno, A.A. Sagues, S.C. Kranc, Steel activation in concrete following interruption of long term cathodic polarisation, Corrosion 2002, Houston, Texas (Paper No. 02259).10.5006/C2002-02259 ↗
5. Making reinforced concrete immune from chloride corrosion, Proceedings Institution Civil Engineers10.1680/coma.2007.160.4.155 ↗
6. Glass · 2007
7. The inhibitive effects of electrochemical treatment applied to steel in concrete10.1016/S0010-938X(99)00121-3 ↗
8. Glass · 2006
9. S.P. Holmes, G.K. Glass, A.C. Roberts, P. Robins, G.D. Wilcox, The response of protective current to environmental conditions during hybrid anode concrete repair treatments, Corrosion 2011, Houston, Texas (Paper No. 19132).10.5006/C2011-11005 ↗
10. S.P. Holmes, The response of galvanic protection current to environmental changes, Eurocorr 2009, Nice, France (Paper No. 8254).
11. J.P. Broomfield, Electrochemical Realkalisation of Steel Reinforced Concrete – A State of the Art Report, Corrosion Prevention Association Technical Note No. 9, 2005.
12. Effectiveness and structural implications of electrochemical chloride extraction from reinforced concrete beams10.1016/j.cemconres.2003.07.001 ↗
13. J.P. Broomfield, Corrosion of Steel in Concrete, understanding, investigation and repair, E & F Spon, London, 1997.10.4324/9780203414606 ↗
14. J.P. Broomfield, The Principles and Practice of Galvanic Cathodic Protection for Reinforced Concrete, Corrosion Prevention Association Technical Note No. 6, 2005.
15. Cathodic protection for reinforced-concrete and prestressed-concrete structures10.1016/0010-938X(93)90391-S ↗
16. Pit re-alkalisation and its role in the electrochemical repair of reinforced concrete
17. Sagues · 2009
18. Sagues · 1994
19. Cathodic protection by impressed DC currents for construction, maintenance and refurbishment in reinforced concrete10.1016/0950-0618(93)90037-D ↗
20. Environmental influence on point anodes performance in reinforced concrete10.1016/j.conbuildmat.2006.11.014 ↗
21. S.P. Holmes, G.D. Wilcox, P.J. Robins, G.K. Glass, A.C. Roberts, Long term assessment of a hybrid electrochemical treatment, Materials and Corrosion (2011), available online 01/06/11.