The University of Southampton
University of Southampton Institutional Repository

Effect of relative density and confining pressure on Poisson ratio from bender and extender elements tests

Effect of relative density and confining pressure on Poisson ratio from bender and extender elements tests
Effect of relative density and confining pressure on Poisson ratio from bender and extender elements tests
By using the bender and extender elements tests, together with measurements of the travel times of shear (S) and primary (P) waves, the variation of Poisson ratio (?) was determined for dry sands with respect to changes in relative densities and effective confining pressures (?3). The tests were performed for three different ranges of particle sizes. The magnitude of the Poisson ratio decreases invariably with an increase in both the relative density and the effective confining pressure. The effect of the confining pressure on the Poisson ratio was found to become relatively more significant for fine-grained sand as compared with the coarse-grained sand. For a given material, at a particular value of ?3, the magnitude of the Poisson ratio decreases, almost in a linear fashion, with an increase in the value of maximum shear modulus (Gmax). The two widely used correlations in literature, providing the relationships among Gmax, void ratio (e) and effective confining pressure (?3), applicable for angular granular materials, were found to compare reasonably well with the present experimental data for the fine- and medium-grained sands. However, for the coarse-grained sand, these correlations tend to overestimate the values of Gmax
0016-8505
561-567
Kumar, Jyant
c70d5995-3239-4de7-8ff1-44cf50fa4b2e
Madhususan, B.N.
e139e3d3-2992-4579-b3f0-4eec3ddae98c
Kumar, Jyant
c70d5995-3239-4de7-8ff1-44cf50fa4b2e
Madhususan, B.N.
e139e3d3-2992-4579-b3f0-4eec3ddae98c

Kumar, Jyant and Madhususan, B.N. (2010) Effect of relative density and confining pressure on Poisson ratio from bender and extender elements tests. Géotechnique, 60 (7), 561-567. (doi:10.1680/geot.9.T.003).

Record type: Article

Abstract

By using the bender and extender elements tests, together with measurements of the travel times of shear (S) and primary (P) waves, the variation of Poisson ratio (?) was determined for dry sands with respect to changes in relative densities and effective confining pressures (?3). The tests were performed for three different ranges of particle sizes. The magnitude of the Poisson ratio decreases invariably with an increase in both the relative density and the effective confining pressure. The effect of the confining pressure on the Poisson ratio was found to become relatively more significant for fine-grained sand as compared with the coarse-grained sand. For a given material, at a particular value of ?3, the magnitude of the Poisson ratio decreases, almost in a linear fashion, with an increase in the value of maximum shear modulus (Gmax). The two widely used correlations in literature, providing the relationships among Gmax, void ratio (e) and effective confining pressure (?3), applicable for angular granular materials, were found to compare reasonably well with the present experimental data for the fine- and medium-grained sands. However, for the coarse-grained sand, these correlations tend to overestimate the values of Gmax

Text
Effect of relative density and confining pressure on Poisson ratio from Bender and extender element tests.pdf - Other
Download (399kB)

More information

Published date: July 2010
Organisations: Infrastructure Group

Identifiers

Local EPrints ID: 399941
URI: http://eprints.soton.ac.uk/id/eprint/399941
ISSN: 0016-8505
PURE UUID: 0913d599-5f14-43fa-9a0e-170065e1f9fb
ORCID for B.N. Madhususan: ORCID iD orcid.org/0000-0002-2570-5934

Catalogue record

Date deposited: 15 Sep 2016 08:51
Last modified: 01 Jan 2020 05:01

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×