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. Cyclic shear experiments with saturated and dry fine-grained corundum powder, i.e. α-Al2O3 particles, have been conducted in a resonant column device. After an increase of total pressure the shear stiffness showed a slight decrease and a subsequent increase with time. The equivalent viscous damping ratio followed an opposite trend. The increase of shear stiffness with time did not stop after the...
Resonant column experiments were conducted with an extremely fine-grained material, viz. an -aluminum oxide (Al2O3), which serves as a model material for cohesive soils with particle diameters in the range of m. With this particle size interparticle forces from van der Waals and Coulombic interaction have an influence on the behavior of the material in dynamic shear tests. By adjusting the surface...
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