Abstract
This laboratory study involves leaching clay from Onsøy, Norway. Deaired deionised water reduced the pore water salinity, potentially forming a quick clay, in a triaxial cell, modified to allow shear wave velocity and resistivity measurements to be made. This project aims to assess how changes in the geotechnical properties of the clay influence its geophysical properties. The testing procedure has been able to create a quick clay with a remoulded shear strength of 0.2 kPa, and a final salt content of 2.0 g/l. This corresponded to an increase in the resistivity of the clay from initially 0.9 Ωm to a final resistivity of 14.0 Ωm.
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Acknowledgements
The authors wish to extend their sincere gratitude to Toralv Berre, Morten Andreas Sjursen, and Rune Dyvik at NGI geotechnical laboratory for all the help and expertise offered in laboratory work. We would also like to thank both NGI and Prof. JH Schmertmann for the use of both time and equipment in NGI’s Schmertmann Research Laboratory. Funding for this research has been provided by both the Department for Employment and Learning (NI) and the NGI Schmertmann Research Laboratory.
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Gribben, S., Bazin, S., Donohue, S., Sivakumar, V., L’Heureux, JS. (2017). Investigating How the Changes in Geotechnical Properties of Sensitive Clays Influence Their Geophysical Properties. In: Thakur, V., L'Heureux, JS., Locat, A. (eds) Landslides in Sensitive Clays. Advances in Natural and Technological Hazards Research, vol 46. Springer, Cham. https://doi.org/10.1007/978-3-319-56487-6_8
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