Laboratory performance of zinc anodes for impressed current cathodic protection of reinforced concrete
- National Research Council of Canada, Ottawa, Ontario (Canada)
Cathodic protection is used increasingly to mitigate steel reinforcement corrosion in concrete. the performance of zinc materials as impressed current anodes was evaluated. The anode materials investigated included rolled zinc sheets, metallized zinc, and 85% Zn-15% Al. The circuit resistance and the adhesion of the anodes was monitored with polarization time. Overall performance of arc-sprayed zinc was good. However, its adhesion to the concrete surface slowly decreased as the current density, or the polarization period, increased. Penny blank sheets and metallized 85% Zn-15% Al were found unsuitable as impressed current anodes.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 103963
- Journal Information:
- Corrosion, Journal Name: Corrosion Journal Issue: 8 Vol. 51; ISSN 0010-9312; ISSN CORRAK
- Country of Publication:
- United States
- Language:
- English
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