The polarization performance of two types of commercial galvanic point anodes for protection of rebar around patch repairs is evaluated. Experiments include measurement of the polarization history of the anode under galvanostatic load simulating various aging regimes. Additionally, the anodes were evaluated in reinforced concrete slabs with residual chloride contamination and in field installations. Preliminary results indicate that only modest performance may be achieved with typical expected anode placement spacing in commonly encountered applications.

Subject
Depolarization, Humidity, Concrete repair, Anode potential, Rebar, Zinc anodes, Slabs, Anodic current, Steel, Electric potential, Polarization, Concrete, Anodes
Keywords:
Anodes, Zinc, Cathodic Protection, Concrete, Corrosion, Reinforcing Steel
Government work published by the Association for Materials Protection and Performance (AMPP) with permission of the author(s). Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
2007
GOV
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