Results 261 to 270 of about 401,660 (309)
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Direct shear tests on reinforced sand
International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1987New data are presented from internal measurements in direct shear tests on sand. An interpretation is given for the plane strain angle of friction and the angle of dilation of sand in a direct shear test. The direct shear angle of friction deduced from the conventional analysis is shown to under-estimate the frictional shearing resistance of sand by ...
R. A. Jewell, C. P. Wroth
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Investigation of shear performance of UHPC by direct shear tests
Engineering Structures, 2019Abstract Ultra-high performance concrete (UHPC) has been applied widely in modern structure construction. The outstanding mechanical properties of UHPC not only enable strong yet slim structural designs but also highlight its potential in protective structural constructions against extreme loads.
Pengtao Wu +3 more
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Simple shear tests with a varying shearing direction during cyclic shearing
Géotechnique Letters, 2014Tests with cyclic lateral loading on a pile have shown that the pile reacts to a change of loading direction with increasing accumulation of lateral displacements. This phenomenon is known as ‘pile drift’. To investigate this behaviour at small scale under laboratory conditions, a specifically designed simple shear apparatus with two shearing axes was
C. Rudolph, J. Grabe, I. Albrecht
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Scaling Effects in Direct Shear Tests
AIP Conference Proceedings, 2009Laboratory experiments of the direct shear test were performed on spherical particles of different materials and diameters. Results of the bulk friction vs. non‐dimensional shear displacement are presented as a function of the non‐dimensional particle diameter. Simulations of the direct shear test were performed using the Discrete Element Method (DEM).
Andrés D. Orlando +4 more
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Development of a Large Direct Shear Testing Box for Direct and Interface Shear Testing
Geotechnical Testing JournalABSTRACT Understanding the strength of interfaces between soils and other construction materials is critical for analyzing soil-structure interaction effects on buried and embedded structures. These interface friction angles are often taken from general design tables and correlations because of the need for specialized equipment to ...
Josh McLeod +3 more
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A numerical examination of the direct shear test
Géotechnique, 2007The paper presents results of two-dimensional simulations of the direct shear test using the discrete element method (DEM). The heterogeneous distributions of stress and strain are illustrated and, taking advantage of the numerical technique, the evolution of the stress tensor and porosity changes in the shear zone are monitored.
L. zhang, C. Thornton
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Direct shear machine for testing rock joints
International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1985Abstract Most direct shear machines are designed for soil testing or research and have serious limitations when used for rock joint testing by commercial testing laboratories. To overcome some of these limitations, a machine has been designed that uses split cylindrical specimen holders to encapsulate rock specimens in the field ...
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Geophysical Characterization of Shear Zone in Direct Shear Test
2011Shear behavior of granular soils largely affects the safety and stability of underground and earth structures. This study presents the characteristics of the shear zone in a direct shear test using shear wave and electric resistivity measurements. An innovative direct shear box made of transparent non-conductive acrylic material has been developed to ...
Byun Yong-Hoon +3 more
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Numerical Simulations of the Direct Shear Test
Chemical Engineering & Technology, 2003AbstractNumerical simulations of the direct shear test have been performed under constant normal stress conditions, using the Discrete Element Method. Results are presented to show how the average shear to normal stress ratio acting on the shear band compares with the force data at the boundaries.
C. Thornton, L. Zhang
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Scale dependence of direct shear tests
Science Bulletin, 2009Direct shear test has been widely used to measure the shear strength of soils and other particulate materials in industry because of its simplicity. However, the results can be dependent on the specimen size. The ASTM (American Society for Testing and Materials) publications suggest that for testing soils the shear box should be at least ten times the ...
Qiang Zhou +3 more
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