Cathodic protection systems for reinforced concrete structures have provided long-term corrosion protection to many reinforced concrete structures in Australia over the past 40 years.

In recent years, galvanic-based cathodic protection has become an area of substantial growth due to its simplicity and low monitoring and maintenance requirements.

The lack of independent detailed information related to the costing, performance, advantages, and disadvantages of galvanic-based and impressed current corrosion protection systems has in many cases led to the selection of unsuitable corrosion protection systems, unable to provide long-term cost-effective corrosion protection solutions.

This paper presents performance data from a recently completed major rehabilitation project of a multi-story building in Sydney, Australia, where both impressed current and galvanic cathodic protection systems have been utilized.

This paper outlines the reasons behind the selection process of the corrosion protection systems and presents the performance data of some of the protection systems post-construction.

This paper aims to assist owners in the selection process of the optimum corrosion protection solution for their assets.

Subject
Buildings, Galvanic anodes, Impressed current cathodic protection, Cathodic protection, Reference electrodes, Installation, Slabs, Corrosion protection, Maintenance, Elements, Chlorides, Concrete, Reinforcement
Keywords:
corrosion protection, impressed current, cathodic protection, galvanic, incipient anode
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2023
Association for Materials Protection and Performance (AMPP)
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