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Disturbance of the Bothkennar clay prior to laboratory testing

Hight, D.W., Boese, R., Butcher, A.P., Clayton, C.R.I. and Smith, P.R. (1992) Disturbance of the Bothkennar clay prior to laboratory testing Geotechnique, 42, (2), pp. 199-217. (doi:10.1680/geot.1992.42.2.199).

Record type: Article

Abstract

Interpretation of laboratory tests in the characterization study of the Bothkennar clay required an assessment to be made of the effects of disturbance prior to testing. Disturbance is shown to have occurred as a result of tube sampling, sample transport and specimen preparation. The effects of disturbance in the clay are to reduce the mean effective stress in the sample and shrink the initial bounding surface. The consequences of these changes are illustrated for the case of unconsoli-dated undrained triaxial tests, undrained triaxial compression and extension tests after reconsolidation to in situ stress, and oedometer tests. Reduction in peak strength, stiffness, yield stress and post-yield compressibility are shown to be a consequence of disturbance. The evaluation of sample quality on the basis of strains during reconsolidation is examined.

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More information

Published date: June 1992
Keywords: shear strength, site investigation, laboratory tests, compressibility, clays
Organisations: Civil Engineering & the Environment

Identifiers

Local EPrints ID: 75027
URI: http://eprints.soton.ac.uk/id/eprint/75027
ISSN: 0016-8505
PURE UUID: b7a8c9ef-800a-4165-ae40-a4a2778d8431

Catalogue record

Date deposited: 11 Mar 2010
Last modified: 18 Jul 2017 23:44

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Contributors

Author: D.W. Hight
Author: R. Boese
Author: A.P. Butcher
Author: C.R.I. Clayton
Author: P.R. Smith

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