A system for field measurement of suction using high capacity tensiometers

J. Mendes*, D. G. Toll, C. E. Augarde, D. Gallipoli

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

23 Citations (Scopus)

Abstract

This paper presents a new system to measure suction in the field using high capacity tensiometers recently developed through collaboration between Durham University and Wykeham Farrance Limited. The system comprises a borehole probe locator where five tensiometers can be inserted allowing the measurement of suction at different depths. Since the tensiometers are left in place, rather than being used for a single "spot" measurement, suctions can be observed continuously with the aid of a logger and a computer. This enables the measurement of variations of suction due to seasonal changes and the observation of the immediate response to a rainfall event. Two borehole probe locators have been installed at different points in an embankment to measure suction in the fill material. The instrumented embankment was built for research purposes at Nafferton farm, near Newcastle, UK, as part of a cooperative project (BIONICS) investigating the biological and engineering impacts of climate change on slopes. The paper describes the installation and some preliminary observations obtained using the system.

Original languageEnglish
Title of host publicationUnsaturated Soils
Subtitle of host publicationAdvances in Geo-Engineering - Proceedings of the 1st European Conference on Unsaturated Soils, E-UNSAT 2008
PublisherTaylor & Francis
Pages219-225
Number of pages7
ISBN (Electronic)9780429207211
ISBN (Print)9780415476928
Publication statusPublished - 23 Jun 2008
Externally publishedYes
Event1st European Conference on Unsaturated Soils, E-UNSAT 2008 - Durham, United Kingdom
Duration: 2 Jul 20084 Jul 2008

Conference

Conference1st European Conference on Unsaturated Soils, E-UNSAT 2008
CountryUnited Kingdom
CityDurham
Period2/07/084/07/08

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