Patent ID: 6572760
Filing Date: 2003-06-03
Classification: C23F

Abstract:
A method for cathodic protection comprising:providing a covering material and a steel member at least partly embedded in the covering material; providing a sacrificial anode body in the form of a solid body separate from the covering material; at least partly embedding the anode body in the covering material; electrically connecting the anode body to the steel member so that an electrical potential therebetween causes an electrical current to flow therebetween through the electrical connection and causes ions to flow through an interface of the anode body and through the covering material tending to inhibit corrosion of the steel member; providing a material which is bound into the anode body with the sacrificial material thereof so as to be carried thereby which acts in the presence of moisture to communicate ions at the interface of the anode body to keep the interface electrochemically active during the life of the anode body to maintain said cathodic protection; and providing in the material the characteristic of a humectant and causing the presence of the humectant material to absorb additional moisture sufficient to maintain conductivity at the interface to a level greater than would occur in the absence of the humectant material.