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A reexamination of the permeability index of clays

Babu, Sivakumar GL and Pandian, NS and Nagaraj, TS (1993) A reexamination of the permeability index of clays. In: Canadian Geotechnical Journal / Revue canadienne de géotechnique, 30 (1). pp. 187-191.

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The permeability index Ck, similar to the compression index, is the slope of the void ratio – coefficient of permeability relationship. Literature shows that, in general, for sensitive clays it can be related to initial void ratio by Ck = 0.5e0. The possibility of obtaining such a relationship for Cochin marine clays in terms of liquid limit void ratio is indicated in this paper. Analysis of permeability behaviour of Cochin marine clays and the test results available in published literature using generalized state parameter approach show that, in principle, these forms of equations for the permeability index are tenable, even though they were obtained based on experimental observation alone.

Item Type: Editorials/Short Communications
Publication: Canadian Geotechnical Journal / Revue canadienne de géotechnique
Publisher: NRC Research Press
Additional Information: Copyright of this article belongs to NRC Research Press.
Keywords: Permeability index,initial void ratio,void ratio at liquid limit,generalized state parameter approach.
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 02 Feb 2011 11:18
Last Modified: 02 Feb 2011 11:18
URI: http://eprints.iisc.ac.in/id/eprint/35328

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