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Liquid Limit Determination of Class F Coal Ash

Sridharan, A and Pandian, NS and Prasad, PS (2000) Liquid Limit Determination of Class F Coal Ash. In: Journal of Testing and Evaluation, 28 (06). pp. 455-461.

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Large production of coal ash, a waste material, demands its bulk utilization. Bulk utilization of these ashes is possible only through geotechnical applications such as embankment construction, as a back-fill material, a subbase material, and the like. Hence their physical and engineering properties need to be determined for effective utilization. Liquid limit is one of the important physical properties. The existing popular methods of liquid limit determination of soils, namely Casagrande's percussion method and the falling cone method, have limitations for their use in nonplastic materials like coal ash. In this paper, a new method has been proposed to determine the liquid limit of coal ash. The proposed method is based on the premise that at its liquid limit water content, soil/coal ash does not imbibe or give out any water under a particular vertical stress under the K-o condition. This vertical stress is found to be 0.9 kPa. Experimental results are presented to substantiate the proposed method.

Item Type: Journal Article
Publication: Journal of Testing and Evaluation
Publisher: ASTM International
Additional Information: Copyright of this article belongs to ASTM Interantional
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 04 Sep 2009 03:54
Last Modified: 04 Sep 2009 03:54
URI: http://eprints.iisc.ac.in/id/eprint/18016

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