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Title: Behavior of a pressure grouted soil-cement interface under different suctions
Authors: Hossain, MA
Yin, JH 
Issue Date: 2011
Source: Computer methods for geomechanics : frontiers and new applications, 2011, v. 1, p. 207-212 How to cite?
Abstract: Nowadays, pressure grouted soil nails are used to stable the unsafe slopes. However, soil nail pullout tests can not quantify accurately the interface shear strength. Direct shear tests can be used to determine the actual soil-cement grout interface behavior. In this study, direct shear tests are conducted between a gravity grouted and a pressure grouted soil-cement interface under different suctions. The stress-displacement curves of both interfaces show strain-hardening behavior at saturated condition. On the other hand, a strain-softening behavior is observed as the suction value is increased. A shear-compression behavior is shown by the both interfaces at saturated condition, and a shear-dilation behavior is obvious for other suctions. Grouting pressure has signifi cant infl uence on the interface strength. The shear strength of pressure grouted interface is greater than gravity grouted interface at lower suctions. In contrasts, pressure grouted interface shear strength is lower than the gravity grouted interface at higher suctions.
Description: 13th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2011, Melbourne, VIC, 9-11 May 2011
ISBN: 9780980824414
Appears in Collections:Conference Paper

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