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Geotechnical properties of cement treated illite as hydraulic barrier

Lakshmikantha, H and Sivapullaiah, PV (2003) Geotechnical properties of cement treated illite as hydraulic barrier. In: Clay Research, 22 (1-2). pp. 29-41.

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Bentonite is widely used for construction of hydraulic barrier in water and waste containment facilities because of its high adsorption capacity and low hydraulic cond. Performance of bentonite is questionable under varied phys. and chem. environment. Illite is one of the, common minerals present in many soils and hence it is important to improve its behavior as liner material. Studies have shown that illite alone is marginally suitable for use as liner material. The properties of illite are influenced by the nature of pore fluid. To improve the properties of illite and reduce the sensitivity of illite to pore fluid characteristics, it has been proposed to stabilize illite with 1% by wt. of cement. In this work the geotech. properties of cement stabilized illite are studied and evaluated from the consideration of liner or as hydraulic barrier requirements. Results have shown that there is a considerable improvement in the geotech. properties of illite on treatment with cement. The liq. limit, plasticity index, shrinkage properties and strength of cement treated illite are improved and also shown increase in optimum moisture content and reduced dry d. with curing period. The properties of cement treated illite are better suited as hydraulic barrier or liner than that of illite alone.

Item Type: Journal Article
Publication: Clay Research
Publisher: Clay Minerals Society of India
Additional Information: The Copyright belongs to Clay Minerals Society of India.
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 25 Apr 2006
Last Modified: 27 Aug 2008 11:55
URI: http://eprints.iisc.ac.in/id/eprint/6421

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