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Laboratory studies on the volume change characteristics of kaolinite contaminated with sodium phosphate/sulfate

Rao, SM and Reddy, MR (1997) Laboratory studies on the volume change characteristics of kaolinite contaminated with sodium phosphate/sulfate. In: Geotechnical Testing Journal, 20 (3). 362-367 .

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Abstract

Reported distress to an industrial structure from phosphate/sulfate contamination of kaolinitic foundation soil at an industrial location in Southern India prompted this laboratory study. The study examines the short-term effect of sodium sulfate/phosphate contamination on the swell/compression characteristics of a commercial kaolinite. Experimental results showed that the unsaturated contaminated kaolinite specimens exhibited slightly higher swell potentials and lower compressions than the unsaturated uncontaminated kaolinite specimens. It is suggested that the larger double layer promoted by the increased exchangeable sodium ion concentration is responsible for the slightly higher swell potentials and lower compressions of the unsaturated contaminated kaolinite specimens.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to ASTM International.
Keywords: Soil test;Laboratory test;Kaolinite;Sodium phosphate;Sodium sulfate;Unsaturated soil;Swelling;Inorganic compound; Foundations;Ion exchange;Oedometer;Case study;India;Asia;
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 29 Aug 2011 10:18
Last Modified: 29 Aug 2011 10:18
URI: http://eprints.iisc.ernet.in/id/eprint/38283

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