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Assessment of sample quality in soft clay using shear wave velocity and suction measurements
Author(s)
Date Issued
2010-11-01
Date Available
2013-11-08T14:46:10Z
Abstract
The characterisation of soils for civil engineering purposes depends on removing sufficiently high-quality samples from the ground. Accurate evaluation of sample quality is therefore important if reliable design parameters are to be determined. This paper describes the use of unconfined shear wave velocity (V s) and suction (u r) measurements to assess sample quality rapidly in soft clay. Samples of varying quality from three well-characterised soft clay sites are initially assessed using conventional techniques, and their results compared with V s and u r measurements performed on the same samples. It is observed that the quality of samples indicated by these measurements is very similar to those inferred from traditional disturbance measures, with V s being the more reliable indicator. A tentative empirically derived criterion, based on samples tested in this project, is proposed to quantify sample disturbance combining both V s and u r measurements. Further work using this criterion on different materials is important so as to test its usefulness.
Type of Material
Journal Article
Publisher
Thomas Telford Ltd.
Journal
Géotechnique
Volume
60
Issue
11
Start Page
883
End Page
889
Copyright (Published Version)
2010 Thomas Telford Ltd.
Language
English
Status of Item
Peer reviewed
This item is made available under a Creative Commons License
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41
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