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Studies of the specific gravity of some Indian coal ashes

Pandian, NS and Rajasekhar, C and Sridharan, A (1998) Studies of the specific gravity of some Indian coal ashes. In: Journal of Testing and Evaluation, 26 (03). pp. 177-186.

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Abstract

One of the major problems faced by coal based thermal power stations is handling and disposal of ash. Among the various uses of fly ash, the major quantity of ash produced is used in geotechnical engineering applications such as construction of embankments, as a backfill material, etc. The generally low specific gravity of fly ash resulting in low unit weight as compared to soils is an attractive property for its use in geotechnical applications. In general, specific gravity of coal ash lies around 2.0 but can vary to a large extent (1.6 to 3.1). The variation of specific gravity of coal ash is due to the combination of various factors like gradation, particle shape, and chemical composition. Since specific gravity is an important physical property, it has been studied in depth for three Indian coal ashes and reported in this paper.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to American Society for Testing Materials.
Keywords: specific gravity;cenospheres;entrapped air;iron content.
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 01 Dec 2009 10:07
Last Modified: 01 Dec 2009 10:07
URI: http://eprints.iisc.ernet.in/id/eprint/19311

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