Engineering Properties of Grouted Sands
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 130, Issue 3
Abstract
A comparison of the behavior of uncemented and grouted sands is presented. Four sands (Fontainebleau sand and three types of alluvial deposits of the Seine River) were tested. Specimens of grouted sands were prepared in the laboratory by injection of very fine cement or mineral grouts. An initial series of unconfined uniaxial compression tests and tensile tests was performed to highlight the effect of some key factors (mainly the cement-to-water ratio of the grout and the relative density of the granular skeleton) on the strength of the grouted sands. Subsequent triaxial tests showed that when a soil is impregnated by either a very fine cement grout or a mineral grout, both stiffness (secant stiffness or small-strain stiffness) and strength of the soil improve. Similar trends were observed for the behavior of both uncemented and grouted sands. The behavior of grouted sands can be roughly reproduced by applying a linear elastic, perfectly plastic model with a nonassociated Mohr–Coulomb yield criterion whose parameters can be easily determined. Finally, preliminary recommendations are proposed relative to improvements ratios of the parameters of this simple constitutive model that is still commonly used in geotechnical engineering.
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 130 • Issue 3 • March 2004
Pages: 328 - 338
Copyright
Copyright © 2004 American Society of Civil Engineers.
History
Received: Dec 6, 2000
Accepted: Jul 25, 2003
Published online: Feb 19, 2004
Published in print: Mar 2004
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