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The objective of this paper is to present the results of 120 determinations of the small strain shear modulus (G) of several specimens of saturated sand (20–40 Ottawa sand) for different conditions of relative density (Dr), effective consolidation pressure (σ’c) and level of torsional excitation (Te). The equipment used for the execution of the tests was a resonant column apparatus. The tests were performed on reconstituted specimens with relative density (Dr) values ranging from 20 to 80%; effective confining pressures (σ’c) varying from 50 to 300 kPa. Specimens were subjected to torsional excitations of 0.025, 0.05, 0.1, 0.2 and 0.4 volts (V) producing shear strains (γ) between 0.002% and 0.023%. The results led to very simple empirical expressions for the shear modulus as a function of the angular strain for different effective consolidation pressures and void-ratio values.
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