DOI QR코드

DOI QR Code

Experimental investigation on loading collapse curve of unsaturated soils under wetting and drying processes

  • 투고 : 2010.05.11
  • 심사 : 2010.08.22
  • 발행 : 2010.09.25

초록

An experimental program of isotropic loading tests on a compacted kaolin using a conventional triaxial equipment modified for testing unsaturated soils was perform to investigate a loading collapse curve of unsaturated soils along wetting and drying paths. The test data are presented in terms of effective stress on a range of constant suction. The suction hardening behavior was observed for both wetted and dried samples. With the use of an appropriate effective stress parameter, the unique relationship for loading collapse curve for wetting and drying processes was obtained.

키워드

참고문헌

  1. Bishop, A.W. (1959), The principle of effective stress, Teknish Ukebladk, Norway.
  2. Blight, G.E. (1966), "Strength characteristics of desiccated clays", J. Soil Mech. Found. Division - ASCE, 92(6), 19-37.
  3. Coleman, J.W. (1962), "Stress-strain relations for partly saturated soils", Geotech., 12(4), 348-350. https://doi.org/10.1680/geot.1962.12.4.348
  4. Fleureau, J.M., Kheirbek, S., Soemitro, R. and Taibi, S. (1993), "Behavior of clayey soils on drying-wetting paths", Can. Geotech. J., 30, 287-296. https://doi.org/10.1139/t93-024
  5. Fredlund, D.G., Xing, A., Fredlund, M.D. and Barbour, S.L. (1996). "The relationship of unsaturated soil shear strength to the soil-water characteristic curve", Can. Geotech. J., 33, 440-448. https://doi.org/10.1139/t96-065
  6. Gallipoli, D., Gens, A., Sharma, R. and Vaunat, J. (2003), "An elasto-plastic model for unsaturated soil incorporating the effects of suction and degree of saturation on mechanical behavior", Geotech., 53(1), 123- 135. https://doi.org/10.1680/geot.2003.53.1.123
  7. Hilf, J.W. (1956), An investigation of pore pressure in compacted cohesive soils, Ph.D. dissertation, US Bureau of Reclamation, Denver.
  8. Khalili, N., Geiser, F. and Blight, G.E. (2004), "Effective stress in unsaturated soils, a review with new evidence", Int. J. Geomech. - ASCE, 4(2), 115-126. https://doi.org/10.1061/(ASCE)1532-3641(2004)4:2(115)
  9. Kohgo, Y., Nakano, M. and Mayazaki, T. (1993), "Theoretical aspects of constitutive modelling of unsaturated soils," Soils Found., 33(4), 49-63. https://doi.org/10.3208/sandf1972.33.4_49
  10. Lewis, R.W. and Schrefler, B.A. (1987), The finite element method in the deformation and consolidation of porous media, John Wiley & Sons, Inc., UK.
  11. Loret, B. and Khalili, N. (2002) "An effective stress elastic-plastic model for unsaturated porous media", Mech. Mater., 34, 97-116. https://doi.org/10.1016/S0167-6636(01)00092-8
  12. Macari, E.J., Parker, J.K. and Costes, N.C. (1997), "Measurement of volume changes in triaxial tests using digital imaging techniques", Geotech. Test. J., 20(1), 103-109. https://doi.org/10.1520/GTJ11424J
  13. Sheng, D.C., Sloan, S.W. and Gens. (2003), "Finite element formulation and algorithms for unsaturated soils, part I: theory", Int. J. Numer. Anal. Method. Geomech., 27(9), 745-765. https://doi.org/10.1002/nag.295
  14. Toll, D.G. (1988), The behaviour of unsaturated compacted naturally occurring gravel, Ph.D. thesis, The University of London, Imperial College of Science and Technology, London, UK.
  15. Wheeler, S.J. and Sivakumar, V. (1995), "An elasto-plastic critical state framework of unsaturated soils", Geotechnique, 45(1), 35-54. https://doi.org/10.1680/geot.1995.45.1.35

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  4. Hydro-mechanical behavior of compacted silt over a wide suction range vol.22, pp.3, 2010, https://doi.org/10.12989/gae.2020.22.3.237