Chloride induced corrosion is recognized as a significant disease in the nation's concrete infrastructure. This paper will provide an overview of the various corrosion mitigation techniques available and then focus on two innovative methods of using discrete anodes embedded within the concrete to provide corrosion protection to existing structures.
The effectiveness of organic commercial migrating inhibitors on steel reinforcements corrosion. Four series of concrete specimens were cast. Two organic migrating inhibitors were applied. Free corrosion potential and corrosion rate of steel rebar were periodically monitored for five years. Results show that migrating inhibitors are not effective in reducing corrosion rate.
Two types of impressed current cathodic protection and a sacrificial method were used to protect over 100000m2 of reinforced concrete caissons and deck slab of a new ship repair yard. This paper describes the CP and monitoring systems used and compares the monitoring results from the different types of system and probe.