Chapter
Apr 26, 2012
Constitutive Behavior of Compacted Clayey Sand Using a Refined Suction-Controlled Cubical Test Cell
Authors: L. R. Hoyos [email protected], D. D. Pérez-Ruiz [email protected], and A. J. Puppala [email protected]Author Affiliations
Publication: Geo-Frontiers 2011: Advances in Geotechnical Engineering
Abstract
Results from a series of hydrostatic compression, conventional triaxial compression and triaxial compression tests conducted on compacted specimens of unsaturated clayey sand under constant-suction states are presented. The experiments were accomplished in a recently developed true triaxial (cubical) apparatus that is suitable to test cubical, 3-in (7.5-cm) per side specimens of unsaturated soil under controlled-suction states and for a wide range of stress paths that are not achievable in a cylindrical apparatus. Test results are presented in terms of specific volume versus net mean stress response, as well as deviatoric stress versus principal strain response. Matric suction is shown to exert a considerable influence on volume change response and peak shear strength of compacted clayey sand. The new cell is a refined version of a stress-controlled system previously reported by Hoyos et al. (2005, 2008). Target matric suction levels in the specimens are induced and kept constant during testing using the axis-translation technique.
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© 2011 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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Associate Professor, University of Texas at Arlington, Texas 76019.E-mail: [email protected]
Assistant Professor, Universidad Javeriana, Cali, Colombia.E-mail: [email protected]
Professor, University of Texas at Arlington, Texas 76019.E-mail: [email protected]
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