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Advances in suction measurements using high suction tensiometers

Toll, D.G.; Lourenço, S.D.N.; Mendes, J.

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Authors

S.D.N. Lourenço

J. Mendes



Abstract

Significant advances in unsaturated soils testing have been gained through the development of high suction tensiometers allowing direct measurement of suction beyond 100 kPa. This has allowed the implementation of techniques that measure and control suction directly, where the soil is tested in the same conditions as in nature. Previously, much reliance had been placed on indirect measurements of suction and on control of suction using the axis translation technique. It is argued that this technique should be avoided as the use of an elevated air pressure does not replicate natural conditions. This paper presents advances resulting from the use of high suction tensiometers for laboratory testing and field measurements. It also describes an automated suction control system using the air circulation method that can impose controlled cycles of drying and wetting.

Citation

Toll, D., Lourenço, S., & Mendes, J. (2013). Advances in suction measurements using high suction tensiometers. Engineering Geology, 165, 29-37. https://doi.org/10.1016/j.enggeo.2012.04.013

Journal Article Type Article
Acceptance Date Apr 24, 2012
Online Publication Date May 9, 2012
Publication Date Oct 24, 2013
Deposit Date Nov 29, 2012
Publicly Available Date Mar 29, 2024
Journal Engineering Geology
Print ISSN 0013-7952
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 165
Pages 29-37
DOI https://doi.org/10.1016/j.enggeo.2012.04.013

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