Centrifuge testing of an expansive clay

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Title: Centrifuge testing of an expansive clay
Author: Plaisted, Michael D.
Abstract: Expansive clays are located world wide and cause billions of dollars in damage each year . Currently , the expansion is usually estimated using correlations instead of direct testing as direct testing is expensive and often takes over a month to complete . The purpose of this study was to determine if centrifuge technology could be used to characterize expansive clays through direct testing . Testing was performed in an centrifuge permeameter on compacted specimens of Eagle Ford clay . A framework was developed to analyze effective stresses in centrifuge samples and methods were proposed to determine the swell -stress curve of a soil from centrifuge tests . Standard free swell test were also performed for comparison . The swell -stress curve determined by centrifuge testing was found to match with the curve found from free swell tests after correcting for differences in testing procedures . The centrifuge tests were found to be repeatable and required several days for testing rather than weeks .
URI: http : / /hdl .handle .net /2152 /ETD -UT -2009 -08 -310
Date: 2010-06-04

Citation

Centrifuge testing of an expansive clay. Master's thesis, The University of Texas at Austin. Available electronically from http : / /hdl .handle .net /2152 /ETD -UT -2009 -08 -310 .

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