Abstract
The shear stress-displacement behavior and ultimate shear strength at the interface between the cement-grout nail and surrounding soil are of practical importance in the design and safety assessment of a soil nail system. The most commonly adopted method to measure the interface shear strength of a soil nail is a pullout testing method. The current study attempts to investigate the interface shear behavior between the cement-grouted materials (soil nails) and a completely decomposed granite soil using both a large-size direct shear test apparatus and a laboratory pullout test apparatus. The laboratory testing procedures are briefly described. The main test results obtained are presented, followed by discussion on the shear behavior of the soil-grout interface. The interface shear behavior measured from both the interface shear tests and the pullout tests on the same soil tested in the same or a similar condition are compared and discussed. It is shown that the shear stress-displacement behavior of the soil-grout interface in the interface shear tests is similar to that of the soil-soil tests, but is different from the behavior in the pullout tests. Journal of Geotechnical and Geoenvironmental Engineering
Original language | English |
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Pages (from-to) | 1097-1107 |
Number of pages | 11 |
Journal | Journal of Geotechnical and Geoenvironmental Engineering |
Volume | 131 |
Issue number | 9 |
DOIs | |
Publication status | Published - 1 Sept 2005 |
Keywords
- Pull-out resistance
- Shear strength
- Shear tests
- Soil tests
ASJC Scopus subject areas
- Geotechnical Engineering and Engineering Geology
- General Environmental Science