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Book Chapter

Monitoring void ratio redistribution during continuous undrained triaxial compression by X-ray computed tomography

By
P. R. Thomson
P. R. Thomson
Department of Civil Engineering, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada (e-mail: rckwong@ucalgary.ca)
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R. C. K. Wong
R. C. K. Wong
Department of Civil Engineering, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada (e-mail: rckwong@ucalgary.ca)
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Published:
January 01, 2003

Abstract

It is usually implied that void ratio of a soil specimen is homogeneous and unchanging during an undrained triaxial test. In this study, X-ray computed tomography was used to measure void ratio redistribution during undrained triaxial compression of a cohesionless soil sample. A specially designed triaxial apparatus was used to scan the same sample at different axial strain levels, while the axial loads and confining pressures were maintained. Significant variation in sample void ratio was observed at the end of consolidation and sample uniformity was found to increase with increasing axial strain. The process of void ratio redistribution can be effectively illustrated in void ratio-effective stress space.

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Contents

Geological Society, London, Special Publications

Applications of X-ray Computed Tomography in the Geosciences

F. Mees
F. Mees
Ghent University, Belgium
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R. Swennen
R. Swennen
Physico-chemical Geology, K. U. Leuven, Belgium
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M. Van Geet
M. Van Geet
SCK-CEN, Belgium
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P. Jacobs
P. Jacobs
Ghent University, Belgium
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Geological Society of London
Volume
215
ISBN electronic:
9781862394636
Publication date:
January 01, 2003

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