There is a need for an effective, simple-to-install secondary anode system for use in the cathodic protection of reinforced concrete bridge decks. In pursuit of such a system, carbon fibers and carbon black were incorporated in portland cement concrete in an attempt to improve its electrical conductivity. It was found that carbon fibers alone or in combination with carbon black considerably improved the electrical conductivity without sacrificing the desirable mechanical properties of the conventional concrete. Potentially, such a concrete could be used as an overlay on a repaired deck to act as a secondary anode to effectively spread the protective current of a cathodic protective system over the entire deck, and thereby simplify the installation problem.
In the cathodic protection of existing reinforced concrete bridge decks, there is a need for a simple secondary-anode system to facilitate the distrib...
A non-overlay, slotted cathodic protection system was installed two years ago on a concrete bridge deck in Virginia. The design, installation, and ope...
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