Cathodic Protection of the Concrete Piers of Two Bridges in Virginia Using a Water-Based Conductive Coating

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Title: Cathodic Protection of the Concrete Piers of Two Bridges in Virginia Using a Water-Based Conductive Coating

Author(s): Gerardo G. Clemena and Donald R. Jackson

Publication: Special Publication

Volume: 126

Issue:

Appears on pages(s): 679-696

Keywords: bridges (structures); cathodic protection; coatings; corrosion; harbor structures; General

Date: 8/1/1991

Abstract:
There is a need for a new anode for use in the impressed-current cathodic protection (CP) of inland concrete piers, which are deteriorating because of salt-induced corrosion of reinforcing bars. A new water-based conductive coating was used recently on the cathodic protection of some concrete piers in Virginia. Further, as a possible means of eliminating the need for regular site visits to inspect and insure that the CP is functioning properly (which is a disadvantage common to existing CP systems), a microprocessor-based data acquisition device that facilitates remote monitoring was tested with the system. This paper describes the design, installation, and performance of the CP system during its first year of operation.