Saravanan, K. and Muralidharan, S. and Natesan, M. and Venkatachari, G. and Srinivasan, S. (2001) Studies on corrosion resistance of galvanized reinforcement bars in simulated concrete environments. Transactions of the Institute of Metal Finishing, 79 (04). pp. 146-150. ISSN 0020-2967

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Abstract

Corrosion of concrete structures is a major concern all over the world. A number of methods such as coating steel rebars, coating concrete surfaces, cathodic protection, addition of inhibitors, etc., are available to mitigate corrosion. Galvanizing is one of the protective coatings for steel rebars. In the present work, a study has been made of the performance of galvanized rebars, with and without chromate treatment, when compared to uncoated rebarsin the presence and absence of chloride under simulated concrete environments. The corrosion performance of galvanized rebars has been studied by using Electrochemical Impedance Spectroscopy (EIS) and gravimetric techniques. The galvanized rebars were evaluated under two different chloride levels viz. 0 and 0.5% chloride added to the simulated concrete environments. The duration of the test period was 90 days. From the above study, it was found that the galvanized rebars had shown a minimum of 4 to a maximum of 40 times higher corrosion resistance values than the bare steel rebar. Excellent agreement between the gravimetric data and EIS experimental results is obtained

Item Type:	Article
Uncontrolled Keywords:	Galvanizing; Chromate treatment; Corrosion resistance; Concrete environment; Chloride contamination
Subjects:	Corrosion Science and Engineering
Divisions:	UNSPECIFIED
Depositing User:	ttbdu cecri
Date Deposited:	09 Apr 2012 09:13
Last Modified:	09 Apr 2012 09:13
URI:	http://cecri.csircentral.net/id/eprint/2473

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