Dynamic properties of sand from dry to fully saturated states

Kumar, J and Madhusudhan, BN (2012) Dynamic properties of sand from dry to fully saturated states. In: Geotechnique, 62 (1). pp. 45-54.

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Abstract

By using bender and extender elements test, the velocities of the primary and shear waves, V(P) and V(s) respectively, were measured for a sandy material by gradually varying the degree of saturation, S(r), between the dry and fully saturated states. The effect on the results of varying the relative density and effective confining pressure was also studied. The measurements clearly reveal that for a certain optimum S(r), which is around 0.7-0.9% for the chosen sand, the value of the shear modulus G reaches a maximum value, whereas the corresponding Poisson's ratio nu attains a minimum value. The values of the shear modulus corresponding to S(r) approximate to 0% and S(r) = 100% tend towards the same value. For values of Skempton's B parameter greater than 0.99, the values of V(P) and nu rise very sharply to those of water. The predictions from Biot's theory with respect to the variation of V(P) with S(r) match well with the measured experimental data.

Item Type:	Journal Article
Publication:	Geotechnique
Publisher:	Thomas Telford
Additional Information:	Copyright of this article belongs to Thomas Telford.
Keywords:	dynamic properties;laboratory tests;sands;vibrations;waves and wave loading
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	03 Feb 2012 11:55
Last Modified:	03 Feb 2012 11:55
URI:	http://eprints.iisc.ac.in/id/eprint/43378

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