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Corrosão e Protecção de Materiais

versão impressa ISSN 0870-1164

Resumo

LOURENCO, Zita. Cathodic protection of reinforced concrete structures . Corros. Prot. Mater. [online]. 2007, vol.26, n.3, pp.79-85. ISSN 0870-1164.

The major cause of deterioration of reinforced concrete structures, exposed to marine environments, is the corrosion of the reinforcing steel caused by chloride contamination of the concrete surrounding the steel. Cathodic protection is one of the most used electrochemical techniques to control the corrosion process on this type of structures. Recently, cathodic protection has also been used to prevent the onset of corrosion in new structures, in order to avoid their premature deterioration - cathodic prevention. This paper describes the types of cathodic protection systems used, the different anode systems, installation methods, protection criteria, etc. The installation of a cathodic protection system, during construction of the Cais de Carga Geral- Port of Aveiro is presented, as an example of application to new structures.

Palavras-chave : Corrosion Control; Cathodic Protection; Cathodic Prevention; Anodes; Reinforced Concrete Structures.

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