Variables Controlling Stiffness and Strength of Lime-Stabilized Soils
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 137, Issue 6
Abstract
Lime treatment is an attractive technique for soil improvement in the construction of rail tracks and pavement layers, in slope protection of earth dams, and as a support layer for shallow foundations. However, there are no dosage methodologies based on rational criteria as in the case of soil-cement technology, where the voids/cement ratio is shown to be a key parameter for the estimation of both strength and stiffness. The present study, therefore, was aimed at quantifying the influence of the amount of lime, porosity, and voids/lime ratio on the initial shear modulus () and unconfined compressive strength () of a lime-treated clayey sandy soil. From the results of unconfined compression tests and bender elements measurements, it was shown, for the soil-lime mixtures investigated, that the voids/lime ratio is an appropriate parameter to assess both initial stiffness and unconfined compressive strength. Also, a unique versus voids/lime ratio relationship was established linking the soil-lime mixture initial stiffness and compressive strength.
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Acknowledgments
The writers wish to express their gratitude to the Brazilian Council for Scientific and Technological Research/Brazilian Ministry of Science and Technology (CNPq/MCT—Projects Universal, PNPD, PQ, and INCT) for financial support to the research group. Thanks are also due to the Brazilian Electrical Energy Agency ANEEL (P&D UNSPECIFIED0089-036/2006).
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Information
Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 137 • Issue 6 • June 2011
Pages: 628 - 632
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Apr 16, 2010
Accepted: Oct 25, 2010
Published online: Oct 28, 2010
Published in print: Jun 1, 2011
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