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Improved root t method to evaluate consolidation test results - Discussion

Tewatia, SK and Venkatachalam, K (1998) Improved root t method to evaluate consolidation test results - Discussion. In: Geotechnical Testing Journal, 21 (02). pp. 153-154.

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Official URL: http://www.astm.org/JOURNALS/GEOTECH/PAGES/216.htm


Taylor (1948) suggested the method for determination of the settlement, d, corresponding to 90% consolidation utilizing the characteristics of the degree of consolidation, U, versus the square root of the time factor, square root of T, plot. Based on the properties of the slope of U versus square root of T curve, a new method is proposed to determine d corresponding to any U above 70% consolidation for evaluation of the coefficient of consolidation, Cn. The effects of the secondary consolidation on the Cn value at different percentages of consolidation can be studied. Cn, closer to the field values, can be determined in less time as compared to Taylor's method. At any U in between 75 and 95% consolidation, Cn(U) due to the new method lies in between Taylor's Cn and Casagrande's Cn.

Item Type: Journal Article
Publication: Geotechnical Testing Journal
Publisher: ASTM International
Additional Information: Copyright of this article belongs to ASTM International.
Keywords: clays;coefficients;consolidation;drainage;hydraulic conductivity;laboratory test;load;ratio;settlement;slope.
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 20 Aug 2009 11:45
Last Modified: 20 Aug 2009 11:45
URI: http://eprints.iisc.ac.in/id/eprint/19508

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