Balasubramanian, T.M. and Saravanan, K. and Srinivasan, S. and Jayalakshmi, K. and Balakrishnan, K. (1996) Chemical characterization of deteriorated concrete in aggressive media. Bulletin of Electrochemistry, 12 (1-2). pp. 68-71. ISSN 0256-1654

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Abstract

The loss due to deterioration of concrete and subsequent corrosion of reinforcement has been reported to be very high. A systematic study of deterioration of concrete in highly aggresive industrial and marine environments has been reported in this paper. Samples were allowe to deteriorate in acid and neutral media namely, HCl, HNO3, H2SO4, H3PO4, MgCL2, NH4Cl and (NH4)2SO4. Various parameters such as percentage of deterioration in terms of loss in comprehensive strength, change in pH and corrosion constituent such as chloride and sulphate have been studied. The thermogravimetric analysis of deteriorated samples have also been carried out. The deterioration of acid media was found to be in the following order : HNO3>HCL>H2SO4>H3PO4. In the case of neutral media, the deterioration was found to be in the following order. Mgcl2> NH4cl> (NH4)2SO4. The thermogravimetric analysis has thrown much light on the formation of various complex compounds formed between constituents of cement in the aggresive media.

Item Type:	Article
Uncontrolled Keywords:	Deterioration of concrete; Percentage of deterioration; Thermogravimetric analysis
Subjects:	Corrosion Science and Engineering
Divisions:	UNSPECIFIED
Depositing User:	ttbdar CECRI
Date Deposited:	23 May 2012 09:19
Last Modified:	23 May 2012 09:19
URI:	http://cecri.csircentral.net/id/eprint/2659

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