Parthiban, G.T. and Saraswathy, V. and Rengaswamy, N.S. (2000) Cathodic protection of concrete structures using magnesium alloy anode. Bulletin of Electrochemistry, 16 (6). pp. 253-257.

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Abstract

Cathodic protection of concrete structure is gaining more and more importance. Though the impressed current system is being widely used, sacrificial anode system is also gaining ground. It is well known that alloys of zinc, aluminium and magnesium are the candidate materials for use as sacrificial anodes. However, very little work has been done for evaluating their utility as compared with that done for utilizing impressed current system. In the present work cathodic protection of embedded steel reinforcement bars has been achieved by utilizing a suitable magnesium alloy anode, which is manufactured based on indigenous technology (CECRI know-how). The potential of the embedded steel and the current flowing between the anode and the embedded steel were monitored over a period of one year, in conventional M20 (1:2:4 WIC 0.5) concrete. The results indicated that there is a considerable shift in potential in the presence of chloride. The steel was found to be well protected from corrosion, noticed after breaking open the tested concrete. The anode characteristics were evaluated at the end of the test period and the data obtained prove that the cathodic protection system utilizing magnesium alloy sacrificial anode is suitable under specific conditions.

Item Type:	Article
Uncontrolled Keywords:	Concrete; steel-reinforcement; corrosion control; cathodic protection; sacrificial system; magnesium anodes; performance
Subjects:	Corrosion Science and Engineering
Divisions:	UNSPECIFIED
Depositing User:	ttbdar CECRI
Date Deposited:	20 Feb 2012 06:04
Last Modified:	20 Feb 2012 06:04
URI:	http://cecri.csircentral.net/id/eprint/970

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