Relationship between the Soil-Water Characteristic Curve and the Suction Stress Characteristic Curve: Experimental Evidence from Residual Soils
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 138, Issue 1
Abstract
The part of effective stress resulting from soil moisture or soil suction variation can be defined by the suction stress characteristic curve (SSCC). For a given soil, the SSCC can be experimentally determined from shear-strength tests. Recent work shows that the SSCC can be uniquely linked to the soil-water characteristic curve (SWCC). The uniqueness of the SSCC determined from both shear strength and soil moisture retention tests is examined for several residual soils in Korea. The validity of the effective stress principle is demonstrated by showing that effective stress-based on the SSCC describes the same unique failure criterion as that for the saturated failure criterion. The measured SSCCs are also shown to predict the soil-water retention curves within a few percentage. The SWCCs of these residual soils, determined directly from soil moisture retention tests, also accord well with the SSCCs determined directly from triaxial shear-strength tests with the difference within several tens of kPa. Therefore, we show that the suction stress characteristic curve or soil-water retention curve alone can be used to describe both the effective stress and soil-water retention characteristics of variably saturated soils.
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Acknowledgments
A research grant from the Yeungnam University made it possible for SO to take his 2009 sabbatical and conduct the reported research. This research is partially supported by a grant from NSF (NSFCMMI-0855783) to NL, a grant from KICTEP (UNSPECIFIED210-C-000-204) to SO, and are greatly appreciated.
References
Bishop, A. W. (1954). “The use of pore water coefficients in practice.” Géotechnique, 4(4), 148–152.
Bishop, A. W. (1959). “The principle of effective stress.” Teknisk Ukeblad I Samarbeide Med Teknikk, Oslo, Norway, 106(39), 859–863.
Bishop, A. W., and Blight, G. E. (1963). “Some aspects of effective stress in saturated and unsaturated soils.” Géotechnique, 13(3), 177–197.
Borja, R. I. (2006). “On the mechanical energy and effective stress in saturated and unsaturated porous continua.” Int. J. Solids Struct., 43(6), 1764–1786.
Fredlund, D. G., and Morgenstern, N. R. (1977). “Stress state variables for unsaturated soils.” J. Geotech. Engrg. Div., 103(5), 447–466.
Houlsby, G. T. (1997). “The work input to an unsaturated granular material.” Géotechnique, 47(1), 193–196.
Jennings, J. E. B., and Burland, J. B. (1962). “Limitation to the use of effective stresses in unsaturated soils.” Géotechnique, 12(2), 125–144.
Khalili, N., Geiser, F., and Blight, G. E. (2004). “Effective stress in unsaturated soils: Review with new evidence.” Int. J. Geomech., 4(2), 115–126.
Khalili, N., and Khabbaz, M. H. (1998). “A unique relationship for for the determination of shear strength of unsaturated soils.” Géotechnique, 48(5), 681–688.
Kim, Y. K., and Lee, S. R. (2010). “Field infiltration characteristics of natural rainfall in compacted roadside slopes.” J. Geotech. Geoenviron. Eng., 136(1), 248–252.
Lee, I. K., and Coop, M. R. (1995). “The intrinsic behavior of a decomposed granite soil.” Géotechnique, 45(1), 117–130.
Lee, S. J. (2004). “Estimation of unsaturated shear strength and soil water characteristic curve for weathered soil.” Ph.D. dissertation, Dept. of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Korea.
Lee, S. J., Lee, S. R., and Kim, Y. S. (2003). “An approach to estimate unsaturated shear strength using an artificial neural network and hyperbolic formulation.” Comput. Geotech., 30(6), 489–503.
Lu, N. (2008). “Is matric suction stress variable?” J. Geotech. Geoenviron. Eng., 134(7), 899–905.
Lu, N. (2010). “Reply to comments on “Is matric suction stress variable?” J. Geotech. Geoenviron. Eng., 136(2), 407–408.
Lu, N., and Godt, J., and Wu, D. T. (2010). “A closed-form equation for effective stress in unsaturated soil.” Water Resour. Res., 46, W05515.
Lu, N., Kim, T.-H., Sture, S., and Likos, W. J. (2009). “Tensile strength of unsaturated sand.” J. Eng. Mech., 135(12), 1410–1419.
Lu, N., and Likos, W. J. (2004). Unsaturated soil mechanics, Wiley.
Lu, N., and Likos, W. J. (2006). “Suction stress characteristic curve for unsaturated soils.” J. Geotech. Geoenviron. Eng., 132(2), 131–142.
Lumb, P. (1962). “The properties of decomposed granite.” Géotechnique, 12(3), 226–243.
Nuth, M., and Laloui, L. (2008). “Effective stress concept in unsaturated soils: Clarification and validation of an unified framework.” Int. J. Numer. Anal. Meth. Geomech., 32(7), 771–801.
van Genuchten, M. T. (1980). “A closed-form equation for predicting the hydraulic conductivity of unsaturated soils.” Soil Sci. Soc. Am. J., 44(5), 892–898.
van Genuchten, M. T., Leij, F. J., and Yates, S. R. (1991). “The RETC code for quantifying the hydraulic functions of unsaturated soils.” EPA 600/2-91/065.
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© 2012 American Society of Civil Engineers.
History
Received: Jan 25, 2010
Accepted: May 9, 2011
Published online: May 11, 2011
Published in print: Jan 1, 2012
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