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.
| Original language | English |
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| Title of host publication | Computer Methods for Geomechanics |
| Subtitle of host publication | Frontiers and New Applications |
| Pages | 207-212 |
| Number of pages | 6 |
| Volume | 1 |
| Publication status | Published - 1 Dec 2011 |
| Event | 13th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2011 - Melbourne, VIC, Australia Duration: 9 May 2011 → 11 May 2011 |
Conference
| Conference | 13th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2011 |
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| Country | Australia |
| City | Melbourne, VIC |
| Period | 9/05/11 → 11/05/11 |
ASJC Scopus subject areas
- Computational Theory and Mathematics
- Geochemistry and Petrology