Shear test and physical mechanism analysis on size effect of granular media

Shear test samples of different grain sizes are prepared by using mineral particles of soil, and a series of tests of quick direct shear and tri-axial shear are performed to study the size effect of granular media. Deformation curves and shear stress strength are given of test samples with particles of different size and volume fraction. On the basis of the ratio of micro-acting forces between particles to gravity and the cell element model,...