E3S Web Conf.
Volume 9, 20163rd European Conference on Unsaturated Soils – “E-UNSAT 2016”
|Number of page(s)||4|
|Published online||12 September 2016|
An experimental investigation of the independent effect of suction and degree of saturation on very small-strain stiffness of unsaturated sand
1 EDP University of Strathclyde, Department of Civil and Environmental Engineering, Glasgow, UK
2 EDP Nottingham Centre for Geomechanics, University of Nottingham, Nottingham, UK
a Corresponding author: firstname.lastname@example.org
The paper presents an experimental investigation of very small strain stiffness of unsaturated sand. A triaxial test apparatus was equipped with bender elements and compression discs in order to assess the stiffness at very small strains by measuring the velocity of propagation of shear and compression waves through an unsaturated sample. The negative water column method was adopted to apply suction at the base of the sample. The experiments were designed to investigate the independent effect of suction and degree of saturation on the wave propagation velocities. This was achieved by testing the sand sample on both the drying and wetting path.
© The Authors, published by EDP Sciences, 2016
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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