Advances in suction measurements using high suction tensiometers

Toll, David G., Lourenço, Sérgio D.N. and Mendes, Joao (2013) Advances in suction measurements using high suction tensiometers. Engineering Geology, 165. pp. 29-37. ISSN 0013-7952

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Official URL: http://dx.doi.org/10.1016/j.enggeo.2012.04.013

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.

Item Type: Article
Uncontrolled Keywords: Unsaturated soil; High suction tensiometer; Laboratory test; Field measurement
Subjects: H200 Civil Engineering
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Paul Burns
Date Deposited: 10 Jul 2018 09:10
Last Modified: 11 Oct 2019 17:00
URI: http://nrl.northumbria.ac.uk/id/eprint/34895

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