Abstract
The flow behaviour of fully remoulded sensitive clay from Esp, near Trondheim, Norway, is investigated using a wide-gap concentric-cylinder viscometer. The salinity S and liquidity index I L are varied over a wide range. The Esp clay shows shear thinning flow behaviour, similar to Canadian sensitive clays. The Herschel–Bulkley (H-B) model allows a better fit to the measured flow curves than the Bingham model for the Norwegian as well as Canadian clays. All model parameters depend strongly on the liquidity index and the salinity. The H-B exponent n was found to vary from 0.36 at high S and low I L to 0.97 at low S and high I L . The onset of turbulence in the rheometer is detected at Reynolds numbers of 50–100.
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Acknowledgements
We thank Jacques Locat and Denis Demers for sharing the raw data of their tests on Canadian quick clays; Jacques Locat and Dominique Turmel also provided much appreciated information about their experimental procedures. We are grateful to Kjell Karlsrud for his constructive review of the paper. RHG acknowledges the support by Multiconsult ASA during the write-up. The work of DI and JSL was supported by the Research Council of Norway through its general research grant to NGI.
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Grue, R.H., Issler, D., L’Heureux, JS., Thakur, V. (2017). Viscometric Tests of Sensitive Clay from Byneset, Norway, and Fit to the Herschel–Bulkley Model. 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_14
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