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Effects of sampling disturbance in geotechnical design

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Title: Effects of sampling disturbance in geotechnical design
Authors: Lim, GT
Pineda, J
Boukpeti, N
Carraro, JAH
Fourie, A
Item Type: Journal Article
Abstract: This paper describes an experimental study of the effects of sampling disturbance in an Australian natural soft clay and the consequences of different sample quality on the representativeness of soil parameters used in geotechnical designs. The paper is divided into three sections. Laboratory test results obtained from specimens retrieved using three different tube samplers as well as the Sherbrooke (block) sampler are first described. Then, the sample quality assessment, using available indices proposed for soft soils, is presented. It is shown that sample quality varies with the stress paths and boundary conditions applied in laboratory tests. Finally, mechanical soil properties derived from specimens retrieved using the different samplers are used in the prediction of two classical problems in soil mechanics: the settlement and excess pore pressure response underneath an embankment as well as the settlement and bearing capacity of a shallow footing. These two examples are used here to highlight the consequences of poor sampling in practice.
Issue Date: 1-Feb-2019
Date of Acceptance: 28-May-2018
URI: http://hdl.handle.net/10044/1/60427
DOI: https://dx.doi.org/10.1139/cgj-2018-0016
ISSN: 0008-3674
Publisher: NRC Research Press
Start Page: 275
End Page: 289
Journal / Book Title: Canadian Geotechnical Journal
Volume: 56
Issue: 2
Copyright Statement: © 2018 NRC Research Press
Keywords: Science & Technology
Technology
Physical Sciences
Engineering, Geological
Geosciences, Multidisciplinary
Engineering
Geology
sample disturbance
soft clay
stiffness
compressibility
strength
geotechnical design
FIELD TESTING FACILITY
SOFT CLAY
BALLINA
BEHAVIOR
QUALITY
Geological & Geomatics Engineering
0905 Civil Engineering
0907 Environmental Engineering
Publication Status: Published
Online Publication Date: 2018-06-01
Appears in Collections:Faculty of Engineering
Civil and Environmental Engineering
Geotechnics



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