ABSTRACT

ABSTRACT: The paper describes cathodic corrosion protection from sacrificial water anodes at concrete structures. Water anodes can protect the water-covered parts of concrete structures from corrosion, and reduce corrosion in the lower parts of the splash-zone. Corrosion in the splash zone is a well-known problem, but the corrosion reduction from water anodes in this zone is not very well documented. Corrosion in the water-covered parts of the structures is generally considered to be a minor problem. However at many structures underwater corrosion cannot totally be ignored, and therefore underwater inspection and eventually underwater repairs must be performed. Because these underwater works are quite expensive the risk of underwater corrosion can cause considerable expenses. Cathodic protection (CP) from water anodes can therefore be advantageous in the reduction of damages in the splash-zone and reduce the need for inspection and repair under water.