Title: Innovative Approaches To Electrochemical Remediation Of Concrete

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Publication: CIA

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Date: 2/13/2011

Abstract:
The corrosion of reinforcing steel in concrete structures is a global problem. A number of highly technical repair materials are now available to repair concrete structures suffering steel corrosion damage. Often, however, an incipient corrosion problem remains in untreated chloride contaminated areas which may lead to subsequent failure. This paper describes both galvanic and impressed current systems, which can be applied to corrosion susceptible structures, which focus on addressing the fundamental electrochemical nature of corrosion. A galvanic system for enhancing longevity of patch repairs to reinforced concrete is discussed with particular reference to its ability to overcome incipient anode formation. Data to support cost effective extension of this galvanic technology to globally treat corroding reinforced concrete structures will be presented. An alternative impressed current solution to treating contaminated reinforced concrete structures will also be discussed.