Rate Effects And Cyclic Loading of Sensitive Clays
Publication: Journal of Geotechnical Engineering
Volume 113, Issue 5
Abstract
The paper presents the results of a series of monotonic and cyclic triaxial tests carried out to study the influence of the rate of strain and load cycles on the undrained shear strength of three undisturbed sensitive clays from eastern Canada. For structured clays (naturally overconsolidated), pore pressures generated at a given deviator are essentially independent of the strain rate, while the peak strength envelope is lowered as the strain rate is decreased. For destructured clay (normally consolidated), a lower strain rate results in an increase in pore pressure generation during shearing, due to the tendency of the clay skeleton to creep, while the peak strength envelope remains the same. Nevertheless, from a quantitative standpoint, the increase in shear strength caused by an increase in strain rate is similar for both structured and normally consolidated clay, and it is linear for at least five log cycles of strain rate.
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References
1.
Bishop, A. W., and Henkel, D. J. (1962). The measurements of soil properties in the triaxial test. E. Arnold Ltd., London, U.K.
2.
Bjerrum, L., Simons, N., and Torblaa, I. (1958). “The effect of time on the shear strength of a soft marine clay.” Proceedings, Brussels Conference on Earth Pressure Problems, Vol. I, 148–158.
3.
Casagrande, A., and Wilson, S. D. (1951). “Effect of rate of loading on the strength of clays and shales at constant water content.” Geotechnique, 2(3), 251–263.
4.
Crawford, C. B. (1965). “The resistance of soil structure to consolidation.” Canad. Geotech. J., 2(2), 90–97.
5.
Crooks, J. H. A., and Graham, J. (1976). “Geotechnical properties of the Belfast estuarine deposits.” Geotechnique, 26(3), 293–315.
6.
Demers, B. (1980). “Résistance cyclique de I'argile de Grande Baleine.” Mémoire de maîtrise, Département de génie civil, Université de Sherbrooke, Sherbrooke, Quebec, Canada.
7.
Graham, J. (1979). “Embankment stability on anisotropic soft clays.” Canad. Geotech. J., 16(2), 295–308.
8.
Graham, J., Crooks, J. H. A., and Bell, A. L. (1983). “Time effects on the stressstrain behaviour of soft natural clays.” Geotechnique, 33(3), 327–340.
9.
Jarrett, P. M. (1967). “Time‐dependant consolidation of a sensitive clay.” Materials Research and Standards (ASTM), 7(7), 300–304.
10.
Lefebvre, G., Bosse, J. P., and Beliveau, J. G. (1979). “Etude de l'argile du site Olga sous sollicitations cycliques.” Rapport Géo‐79‐06, Département de génie civil, Université de Sherbrooke, Sherbrooke, Quebec, Canada.
11.
Lefebvre, G. (1982). “Results of cyclic triaxial tests on the B‐2 and B‐6 clays.” Rapport Geo‐82‐11, Département de génie civil, Université de Sherbrooke, Sherbrooke, Quebec, Canada.
12.
Lefebvre, G., Bosse, J. P., and Beliveau, J. G. (1979). “Etude de L'argile du site Olga sous sollicitations cycliques.” Rapport Géo‐79‐06, Département de génie civil, Université de Sherbrooke, Sherbrooke, Quebec, Canada.
13.
Lefebvre, G., and Poulin, C. (1979). “A new method of sampling in sensitive clays.” Canad. Geotech. J., 16(1), 226–233.
14.
Leroueil, S., Tavenas, F., Samson, L., and Morin, P. (1983). “Preconsolidation pressure of Champlain clays: Part II. Laboratory determination.” Canad. Geotech. J., 20(4), 803–816.
15.
Peacock, W. H., and Seed, H. B. (1968). “Sand liquefaction under cyclic loading simple shear conditions.” J. Soil Mech. Foundation Div., ASCE, 94(3), 689–708.
16.
Richardson, A., and Whitman, R. V. (1963). “Effect of strain‐rate upon undrained shear resistance.” Geotechnique, 13(3), 310–324.
17.
Vaid, Y. P., Robertson, P. K., and Campanella, R. G. (1979). “Strain rate behaviour of St. Jean Vianney clay.” Canad. Geotech J., 16(1), 34–42.
Information & Authors
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Published In
Journal of Geotechnical Engineering
Volume 113 • Issue 5 • May 1987
Pages: 476 - 489
Copyright
Copyright © 1987 ASCE.
History
Published online: May 1, 1987
Published in print: May 1987
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