Sridharan, A and Prakash, K (2002) Permeability of two-layer soils. In: Geotechnical Testing Journal, 25 (4). pp. 443-448.
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The equivalent coefficient of permeability of a stratified soil system calculated theoretically has been observed to be not the same as that directly measured, when the flow is normal to the orientation of the bedding planes. A hypothesis has been proposed in this investigation to explain this deviation according to which the permeability of the exit layer controls whether the measured permeability is greater or lesser than the theoretically calculated value. The proposed hypothesis has been used to successfully and satisfactorily explain the experimental observations made with the two-layer systems. It has been shown that the coefficient of permeability of a soil in a layered system cannot be considered as its property and that it depends upon the permeabilities of adjoining layers, their thicknesses, and the flow direction.
| Item Type: | Journal Article |
|---|---|
| Publication: | Geotechnical Testing Journal |
| Publisher: | ASTM International |
| Additional Information: | Copyright of this article belongs to ASTM International. |
| Keywords: | clays;drainage;filters;laboratory tests;layered system; permeability;sedimentation |
| Department/Centre: | Division of Mechanical Sciences > Civil Engineering |
| Date Deposited: | 21 Jul 2011 10:27 |
| Last Modified: | 21 Jul 2011 10:27 |
| URI: | http://eprints.iisc.ac.in/id/eprint/39343 |
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