Decementation, Softening, and Collapse: Changes in Small-Strain Shear Stiffness in Loading
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 131, Issue 3
Abstract
The small-strain stiffness of freshly remolded soils is controlled by the state of stress. Diagenesis and cementation can significantly stiffen soils. However, these effects are lost at relatively low strain levels. Previous experimental results have shown the detrimental and irrecoverable effects of unloading on cementation. This study explores the effect of loading on the small-strain stiffness of cemented specimens, with emphasis on the load-induced collapse and softening of cemented, loose soils. The evolution of collapse and decementation is monitored within an oedometric cell by means of small-strain shear wave propagation. Results highlight the interplay between stress-cementation history and initial void ratio. It is observed that the probability of collapse and decementation softening decreases with the increase in effective confinement at the time of cementation, the extent of cementation, and soil density. Volume collapse is preceded by stiffness loss. At high confinement, the stress-independent small-strain stiffness of initially cemented soils gradually converge to the stress-dependent stiffness that characterizes freshly remolded, uncemented soils.
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Acknowledgments
Support for this research was provided by the NSF Mid America Earthquake Center and The Goizueta Foundation.
References
Abduljauwad, S. N., and Al-Amoudi, O. S. B. (1995). “Geotechnical behavior of saline Sabkha soils.” Geotechnique, 45(3), 425–445.
Acar, Y. B., and El-Tahir, A. (1986). “Low strain dynamic properties of artificially cemented sand.” J. Geotech. Eng., 112(11), 1001–1015.
Airey, D. W., and Fahey, M. (1991). “Cyclic response of calcareous soil from the north-west shelf of Australia.” Geotechnique, 41(1), 101–121.
Baig, S., Picornell, M., and Nazarian, S. (1997). “Low strain shear modulus of cemented sands.” J. Geotech. Geoenviron. Eng., 123(6), 540–545.
Bernabe, Y., Fryer, D. T., and Hayes, J. A. (1992). “The effect of cement on the strength of granular rocks.” Geophys. Res. Lett., 19(14), 1511–1514.
Clough, G. W., Rad, N. S., Bachus, R. C., and Sitar, N. (1981). “Cemented sands under static loading.” J. Geotech. Eng. Div., Am. Soc. Civ. Eng., 107(6), 799–817.
Dass, R. N., Yen, S. S., Das, B. M., Puri, V. K., and Wright, M. A. (1994). “Tensile stress–strain characteristics of lightly cemented sand.” Geotech. Test. J., 17(3), 305–314.
Dupas, J. M., and Pecker, A. (1979). “Static and dynamic properties of sand-cement.” J. Geotech. Eng. Div., Am. Soc. Civ. Eng., 105(3), 419–436.
Dvorkin, J., Mavko, G., and Nur, A. (1991). “The effect of cementation on the elastic properties of granular material.” Mech. Mater., 12(3–4), 207–217.
Dvorkin, J., and Yin, H. (1995). “Contact laws for cemented grains: Implications for grain and cement failure.” Int. J. Solids Struct., 32(17), 2497–2510.
Dyvik, R., and Madshus, C. (1985). “Lab measurements of using bender elements.” Proc., Advances in the Art of Testing Soils under Cyclic Conditions, ASCE, New York, 186–196.
Fam, M., and Santamarina, J. C. (1995). “Study of geoprocesses with complementary wave measurements in an oedometer.” Geotech. Test. J., 18(3), 307–314.
Feda, J. (1982). Mechanics of particulate materials, Elsevier, New York.
Feda, J. (1994). “Collapse of soil structure.” Proc., Int. Symp. Engineering Characteristics of Arid Soils, P. G. Fookes and R. H. G. Parry, eds., London, U.K., Balkema, Rotterdam, The Netherlands, 237–240.
Feda, J. (1995). “Behavior of cemented clay.” Can. Geotech. J., 32(5), 899–904.
Fernandez, A., and Santamarina, J. C. (2001). “Effect of cementation on the small strain parameters of sands.” Can. Geotech. J., 38(1), 191–199.
Fratta, D., and Santamarina, J. C. (2002). “Shear wave propagation in jointed rock—State of stress.” Geotechnique, 52(7), 495–505.
Hardin, B. O., and Richart, F. E. (1963). “Elastic wave velocities in granular soils.” J. Soil Mech. Found. Div., 89(1), 33–65.
Jarrad, R. D., Niessen, F., Brink, J. D., and Bucker, C. (2000). “Effects of cementation on velocities of siliciclastic sediments.” Geophys. Res. Lett., 27(5), 593–596.
Kuwano, R., and Jardine, R. J. (2002). “On the applicability of cross-anisotropic elasticity to granular materials at very small strains.” Geotechnique, 52(10), 727–749.
Lade, P. V., and Overton, D. D. (1989). “Cementation effects in frictional materials.” J. Geotech. Eng., 115(10), 1373–1387.
Landis, E. N., and Shah, S. P. (1995). “The influence of microcracking on the mechanical behavior of cement based materials.” Adv. Cem. Based Mater., 2, 105–118.
Leroueil, S., and Hight, D. W. (2003). “Behaviour and properties of natural soils and soft rocks.” Characterization and engineering properties of natural soils, T. S. Tan, K. K. Phoon, D. W. Hight, and S. Leroueil, eds., Vol. 1, Balkema, Exton, Pa., 29–254.
Rao, S. M., Sridharan, A., and Ramanath, K. P. (1995). “Collapse behavior of an artificially cemented clayey silt.” Geotech. Test. J., 18(3), 334–341.
Reddy, K. R., and Saxena, S. K. (1993). “Effects of cementation on stress–strain and strength characteristics of sands.” Soils Found., 33(4), 121–134.
Richart, F. E., Hall, J. R., and Woods, R. D. (1970). Vibrations of soils and foundations, Prentice Hall, Englewood Cliffs, N.J.
Sánchez-Salinero, I., Roesset, J. M., and Stokoe, K. H. (1986). “Analytical studies of body wave propagation and attenuation.” Geotechnical Engineering Rep. No. GR86-15, Univ. of Texas at Austin, Austin, Tex.
Santamarina, J. C., Klein, K. A., and Fam, M. (2001). Soils and waves—Particulate materials behavior, characterization and process monitoring, Wiley, Chichester, England.
Saxena, S. K., and Lastrico, R. M. (1978). “Static properties of lightly cemented sands.” J. Geotech. Eng. Div., Am. Soc. Civ. Eng., 104(12), 1449–1464.
Saxena, S. K., Reddy, K. R., and Avramidis, A. S. (1988). “Static behavior of artificially cemented sand.” Indian Geotechnical J., 18(2), 111–141.
Schanz, T. (1998). “A constitutive model for cemented sands.” Localization and bifurcation theory for soils and rocks, Balkema, Rotterdam, The Netherlands, 165–172.
Shibuya, S., Mitachi, T., Temma, M., and Kawaguchi, T. (2001). “Interrelationship between the metastability index and the undrained shear strength of six clays.” Advanced laboratory stress–strain testing of geomaterials, F. Tatsuoka, S. Shibuya, and R. Kuwano, eds., Swets & Zeitlinger, Lisse, The Netherlands, 111–186.
Shirley, D. J., and Hampton, L. D. (1978). “Shear wave measurements in laboratory sediments.” J. Acoust. Soc. Am., 63(2), 607–613.
Sienkiewicz, F., Shukla, A., Sadd, M., Zhang, Z., and Dvorkin, J. (1996). “A combined experimental and numerical scheme for the determination of contact loads between cemented particles.” Mech. Mater., 22, 43–50.
Tatsuoka, F., and Shibuya, S. (1991). “Deformation characteristics of soils and rocks from field and laboratory tests.” Proc., 9th Asian Regional Conf. Soil Mechanics and Foundation Engineering, Bangkok, Vol. 2, 101–177.
Thomann, T. G., and Hryciw, R. D. (1990). “Laboratory measurement of small strain shear modulus under conditions.” Geotech. Test. J., 13(2), 97–105.
Winkler, K. W. (1983). “Contact stiffness in granular porous materials: Comparison between theory and experiment.” Geophys. Res. Lett., 10(11), 1073–1076.
Wissa, A. E. Z., and Ladd, C. C. (1965). “Shear strength generation in stabilized soils.” Rep. No. R65-17, Soils Publication No. 173, M.I.T., Cambridge, Mass.
Yin, H., and Dvorkin, J. (1994). “Strength of cemented grains.” Geophys. Res. Lett., 21(10), 903–906.
Zang, A., and Wong, T.-F. (1995). “Elastic stiffness and stress concentration in cemented granular material.” Int. J. Rock Mech. Min. Sci. Geomech. Abstr., 32(6), 563–574.
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 131 • Issue 3 • March 2005
Pages: 350 - 358
Copyright
© 2005 ASCE.
History
Received: Feb 14, 2003
Accepted: Jul 14, 2004
Published online: Mar 1, 2005
Published in print: Mar 2005
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