Publication details for Professor David TollToll, D.G., Lourenço, S.D.N. & Mendes, J. (2013). Advances in suction measurements using high suction tensiometers. Engineering Geology 165: 29-37.
- Publication type: Journal Article
- ISSN/ISBN: 0013-7952
- DOI: 10.1016/j.enggeo.2012.04.013
- Further publication details on publisher web site
- Durham Research Online (DRO) - may include full text
Author(s) from Durham
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.
Available online 9 May 2012