Developments in cathodic protection for aerial concrete structures are described and the principles on which the technique is based and the various protecting effects induced by the cathodic polarization of reinforcement are illustrated. The differences between the cathodic protection applied to control corrosion rate of chloride contaminated constructions and that applied to improve the corrosion resistance of the reinforcement of new structures expected to become contaminated are underlined, and the negative consequences of the method and the way to control them are shown. The operating conditions as far as potential and current are concerned and the problems regarding throwing power, the possibility to reach a condition of protection without running the risk of hydrogen embrittlement in the case of prestressed structures are discussed. Examples of cathodic protection and cathodic prevention design, execution, operation and monitoring are given.

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    The Boulevard, Langford Lane
    Kidlington, Oxford  United Kingdom  OX5 1GB
  • Authors:
    • Pedeferri, P
  • Publication Date: 1996


  • English

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Filing Info

  • Accession Number: 00729211
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Dec 12 1996 12:00AM