Analysis of the effect of fines content and loading frequency on the shear modulus and damping ratio of gravels

The dynamic properties of coarse granular soils have been much less studied than in sands. From a database 14 gravel samples subjected to cyclic triaxial tests, available relationships are and new proposed estimate the normalised shear modulus G/Gmax damping ratio D as function strain γ. effect confining stress, fines content, uniformity coefficient loading frequency on variation G/ Gmax versus γ is analysed. It obtained that dependent confinement, but not frequency. 85.6% data converge an error band 25% for formulation. does depend content well confinement formulation has 56% probability having errors 25%.