Anode for cathodic protection against corrosion
AssigneeHeraeus Elektroden GmbH
InventorsStephan Kotowski, Reinhard Bedel, Bernd Busse
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Abstract
For cathodic protection against corrosion of steel reinforcements in reinforced steel constructions, a prefabricated anode is provided which has a core of titanium expanded metal provided with an activation layer and with a cement-containing ion-conductive jacket; the prefabricated anode is immovably secured to the reinforced concrete construction in an ion-conductive bond; after that, the reinforcement of the concrete construction and the core of the anode are connected to the poles of a direct voltage source.
Claims6
A method for protecting steel reinforcement bars (11) in a reinforced concrete construction (15), comprising
- providing a sub-assembly anode structure having a rigid block (1) of concrete containing ion-conductive cement, and
- a core (2) of a valve metal provided with an activation layer included and embedded within said block (1) of concrete, said block (1) extending spatially beyond said valve metal;
- immovably securing the block (1) with the core (2) therein to at least one of said steel reinforcement bars (11) in the reinforced concrete construction;
- pouring mixed concrete around the steel reinforcement bars (11) and said block (1) to embed said block secured to said at least one reinforcement bar and others of said bars (11) within the poured concrete;
- permitting the poured concrete to cure;
- and
- connecting said core (2) and at least one of said steel reinforcement bars (11) to the terminals of a direct current electrical energy source (16).
Dependencies are inferred from the claim text.