An experimental investigation of the independent effect of suction and degree of saturation on very small-strain stiffness of unsaturated sand

Arianna Pagano; Alessandro Tarantino; Meghdad Bagheri; Mohammad Rezania; Phillippe Sentenac

doi:10.1051/e3sconf/20160914015

An experimental investigation of the independent effect of suction and degree of saturation on very small-strain stiffness of unsaturated sand

Arianna Pagano, Alessandro Tarantino, Meghdad Bagheri, Mohammad Rezania, Phillippe Sentenac

Civil And Environmental Engineering

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2 Citations (Scopus)

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Abstract

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.

Original language	English
Article number	14015
Number of pages	4
Journal	E3S Web of Conferences
Volume	9
DOIs	https://doi.org/10.1051/e3sconf/20160914015
Publication status	Published - 12 Sep 2016

Keywords

suction
saturation
sand
soil stiffness
geotechnical structures

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10.1051/e3sconf/20160914015Licence: CC BY 4.0

Pagano-etal-E3S-2016-An-experimental-investigation-of-the-independent-effect-of-suction-and-degree-of-saturationFinal published version, 2.73 MBLicence: CC BY 4.0

Cite this

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AU - Pagano, Arianna

AU - Tarantino, Alessandro

AU - Bagheri, Meghdad

AU - Rezania, Mohammad

AU - Sentenac, Phillippe

PY - 2016/9/12

Y1 - 2016/9/12

N2 - 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.

AB - 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.

KW - suction

KW - saturation

KW - sand

KW - soil stiffness

KW - geotechnical structures

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JO - E3S Web of Conferences

JF - E3S Web of Conferences

SN - 2267-1242

M1 - 14015

ER -

An experimental investigation of the independent effect of suction and degree of saturation on very small-strain stiffness of unsaturated sand

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