Abstract
Increased vertical depths of non-frozen soil in permafrost profiles have been observed in field measurements, but material behaviour during this thaw process has not been investigated thoroughly. An experimental analysis of the undrained shear strength of clay soil during thaw has therefore been carried out. The reduction of undrained shear strength during the phase change from frozen to residual thawed soil was simulated in a climate controlled room. A clay sample was frozen in -18 °C and then slowly thawed at constant temperature, after which series of vane shear tests were performed. The results show a temperature-dependant reduction in the undrained shear strength of the material. The low soil temperatures in the thawed permafrost layer seen in field tests indicate that this mechanism could have practical significance for the safety of structures located in permafrost areas.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Andersland, O.B., Al Nouri, I.: Time-Dependent Strength Behaviour of Frozen soils. Journal of Soil Mechanics – ASCE Division 96(4), 1249–1265 (1970)
Chijimatsu, M., Fujita, T., Kobayashi, A., Nakano, M.: Experiment and validation of numerical simulation of coupled thermal, hydraulic and mechanical behaviour in the engineered buffer material. International Journal for Numerical and Analytical Methods in Geomechanics 24(4), 401–424 (2000)
Duarte, C.M., Lenton, T.M., Wadhams, P., Wassmann, P.: Abrupt climate change in the Arctic. Nature Climate Change 2, 60–62 (2012)
Jorgenson, M.T., Shur, Y.L., Pullman, E.R.: Abrupt increase in permafrost degradation in Arctic Alaska. Geophysical Research Letters 33, 45–49 (2006)
Nicolsky, D.J., Romanovsky, V.E., Panteleev, G.G.: Estimation of soil thermal properties using in-situ temperature measurements in the active layer and permafrost. Cold Regions Science and Technology 55(1), 118–129 (2009)
Osterkamp, T.E., Romanovsky, V.E.: Evidence for warming and thawing of discontinuous permafrost in Alaska. Permafrost and periglacial Processes 12(2), 154–162 (1999)
Watson, G.H., Slusarchuk, W.A., Rowley, R.K.: Determination of some frozen and thawed properties of permafrost soils. Canadian Geotechnical Journal 10(4), 592–606 (1973)
Williams, P.J.: Permafrost and climate change: geotechnical implications. Phil. Trans. Royal Soc. A 352, 347–358 (1995)
Xu, J., Abdalla, B., Eltaher, A., Jukes, P.: Permafrost thawing-pipeline interaction advanced finite element model. In: OMEA 2009, Honolulu, Hawaii (2009)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2013 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Lundberg, A.B. (2013). Shear Strength of Clay during Thaw. In: Laloui, L., Ferrari, A. (eds) Multiphysical Testing of Soils and Shales. Springer Series in Geomechanics and Geoengineering. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-32492-5_14
Download citation
DOI: https://doi.org/10.1007/978-3-642-32492-5_14
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-32491-8
Online ISBN: 978-3-642-32492-5
eBook Packages: EngineeringEngineering (R0)