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Lookup NU author(s): Rosalind Hen-Jones,
Dr Paul Hughes,
Professor Stephanie Glendinning,
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Integrated geophysical-geotechnical sensor systems are being developed to monitor ground moisture and associated geotechnical property changes. Therefore, it is essential that the relationships between electrical resistivity, water content and suction are more fully understood. This paper presents a study to resolve these relationships for a remoulded glacial till taken from a test site in Northumberland, United Kingdom, comparing laboratory and field data. Electrical resistivity was investigated using BS 1377-3:1990, whilst soil suctions were derived from moisture data using a suitable SWRC. To simulate seasonal effects, samples were allowed to dry and subsequently "re-wet" over the course of the testing program. Results indicated an inverse power relationship between resistivity and moisture content; suction was observed to increase with increasing resistivity. It was also observed that samples which fractured during testing had higher resistivities than those which remained intact. Trends observed in the laboratory could be seen to be repeated in field data.
Author(s): Hen-Jones RM, Hughes PN, Glendinning S, Gunn DA, Chambers JC, Wilkinson PB, Uhlemann S
Publication type: Conference Proceedings (inc. Abstract)
Publication status: Published
Conference Name: Sixth International Conference on Unsaturdated Soils, UNSAT 2014
Year of Conference: 2014
Publisher: CRC Press
Library holdings: Search Newcastle University Library for this item
Series Title: Unsaturated Soils: Research & Applications