Corrosion Behaviour of Cathodically Protected Rebars Steel in Simulated Concrete Pore Solution

Corrosion behaviour of cathodically protected rebars steel was observed in simulated concrete pore solution. In The previous study, zinc alloy and aluminium alloy are commonly used to sacrificial anode system for protection of steel in concrete. The use of pure zinc anode for the above purpose is limited. This study has been carried out with a view to analyse the use of pure zinc anode for the cathodic protection of steel in simulated concrete pore solution and pH 13. The electrochemical measurement was performed on cathodically protected rebars steel as working electrode, Saturated Colomel Electrode (SCE) as reference electrode and graphite as counter electrode to evaluate open circuit potential for 2 hours, corrosion potential and corrosion rate behaviour after 2 hours. The The relationships between the protection potential with time, corrosion potential and corrosion rate after 2 hours, sacrificial anode life, discharge currents, and capacity of sacrificial anodes were found. According to the results obtained, The best selection of sacrificial anode was pure Zn anode with resistor of 600 Ohm. Proceeding of The 2nd International Conference on Materials and Metallurgical Technology (ICOMMET) 2015.