Corrosion is the result of two different metals being immersed in an electrolytic substance such as water or concrete.   In order for the corrosion to occur there must be four elements present, a host site from which the current flows, a destination site where no current flows, a medium (i.e., water or concrete) capable of conducting current and a metal path between the host and the destination site.

For asset owners who face rising costs and disruption to their operations due to maintenance and corrosion repairs, the use of a cathodic protection system provides a cost saving benefit by preserving and extending the life of the concrete structures.  Additionally, the preservation of large concrete structures such as marine piers, carparks and bridges is a sustainable practice that offers many environmental and public benefits.