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- W1986113093 abstract "An experimental study was carried out to investigate the effects of the mean net stress and suction history on the initial shear stiffness, G 0 , of a compacted clayey silt. Isotropic tests were performed using two suction-controlled devices, a triaxial cell and a resonant column torsional shear (RCTS) cell, so as to investigate the volumetric behaviour of this material. As for saturated soils, one can expect to find a strong correlation among stress history, volumetric state, and G 0 . Initial shear stiffness was measured almost continuously along various isotropic stress paths, including compressions and drying–wetting single stages or cycles, by using the RCTS cell. The collected data demonstrate a strong dependency of G 0 on mean net stress (p – u a ) and suction (u a – u w ). Cycles of suction, in particular increasing suction beyond the past maximum value, induce significant accumulation of irreversible strains and increase of stiffness, confirming that G 0 is not univocally related to the stress state (p – u a , u a – u w ).Key words: unsaturated, compacted, small strain, stiffness, volumetric behaviour, stress history." @default.
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- W1986113093 date "2007-04-01" @default.
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- W1986113093 title "Effects of net stress and suction history on the small strain stiffness of a compacted clayey silt" @default.
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- W1986113093 doi "https://doi.org/10.1139/t06-129" @default.
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