ABSTRACT
Cathodic protection has been used for many years to protect steel structures like hulls and sheet piles from corroding. Here sacrificial anodes have been widely used. For reinforced concrete structures below water the same sacrificial anode system using Zink or Aluminium anodes can be used. When reinforced concrete structures placed in the atmospheric zone is to be cathodically protected, the concrete resistance will prevent the protective current form reaching the reinforcing steel. Instead impressed current systems are used with anodes of noble material to serve as electron donator.
