Shear strength anisotropy within an aged fill

Lacey, D., Look, B. and Williams, D. (2012). Shear strength anisotropy within an aged fill. In: ANZ 2012 Conference Proceedings. 11th Australia - New Zealand Conference on Geomechanics, Melbourne, Australia, (409-414). 15-18 July 2012.

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Name Description MIMEType Size Downloads
Author Lacey, D.
Look, B.
Williams, D.
Title of paper Shear strength anisotropy within an aged fill
Conference name 11th Australia - New Zealand Conference on Geomechanics
Conference location Melbourne, Australia
Conference dates 15-18 July 2012
Proceedings title ANZ 2012 Conference Proceedings
Place of Publication Melbourne, Australia
Publisher Australia New Zealand Conference on Geomechanics
Publication Year 2012
Sub-type Fully published paper
Open Access Status
ISBN 9780646543017
Start page 409
End page 414
Total pages 6
Collection year 2013
Language eng
Abstract/Summary The shear strength of a material is generally measured via tests orientated in the vertical direction only due to accessibility issues in the field or to minimise the cost of laboratory testing. Unlike deformation parameters, which utilise a Poisson’s ratio to account for any differences present in the vertical and horizontal orientations, no typical factors are readily available for shear strength conversion. Industry practice is to instead assume all soil materials are isotropic and utilise factors of safety to allow for any departure from the adopted strength value. However, as some form of anisotropy is inherent in all materials, the blind adoption of the measured vertical shear strength value as a design parameter is potentially unconservative. This paper investigates the shear strength anisotropy of a fill material derived from residual clay. A series of vane shear tests orientated in both the horizontal and vertical direction were completed over a near surface depth profile and evaluated for anisotropic properties and its testing variability.
Keyword Vane shear
Residual fill
Soil anisotropy
Shear strength
Insitu testing variation
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Conference Paper
Collections: School of Civil Engineering Publications
Official 2013 Collection
 
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Created: Wed, 03 Apr 2013, 11:33:39 EST by Julie Hunter on behalf of School of Civil Engineering