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Evaluating the Performance of Conductive Coating Cathodic Protection Systems Applied to Reinforced Concrete Parking Decks

Published: 19911101 by Correng / Corrosion Service Company
Author(s): Robert Gummow

A 1985 study conducted by the Canada Mortgage and Housing Corporation stated that the overall cost of repairs to damaged parking structures in Canada was estimated at 1.5 to 3.0 billion dollars. Little has done in the intervening years to reduce these costs on existing parking structures.

In fact repair costs have escalated not only due to inflation but owing to more rigorous repair techniques since it is now recognized that the old methods Of simply repairing a delamination does little to reduce overall corrosion. Unless all concrete containing greater than a threshold concentration of chlorides is removed, then corrosion continues unabated in non-repaired areas.