Limit-State Curve of Base-Course Material and Its Relevance for Resilient Modulus Testing
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 132, Issue 2
Abstract
The limit state characteristics of base-course granular materials were obtained using a typical triaxial testing equipment devoted to the measurement of resilient modulus. Accurate monitoring of axial strain during isotropic and anisotropic compression was used to determine the stress conditions where significant irrecoverable strains occur for samples prepared by static compression, Proctor rammer, and vibratory compaction. The limit state curve is highly anisotropic, centered about the line. It is sensitive to sample preparation technique and fines content. The Strategic Highway Research Program (SHRP) procedure corresponds to stress paths during conditioning and repeated loading that remain within the limit state curve of the control base course material containing 3.5% fines. The resilient modulus values reflect henceforth the behaviour of the same material with its original particle contact distribution. The Laboratoires des Ponts et Chaussées (LCPC) procedure is characterized by stress paths that cross the original limit state curve of the Proctor compacted samples. Particle contact distribution changes thus continuously as the limit state curve expands in response to the various stress paths used in this procedure. The resilient modulus values correspond to samples with different fabrics. A simple procedure based on isotropic loading has been proposed for the determination of a simplified limit state curve of base course materials with the intent of specifying the testing conditions for obtaining adequate resilient modulus values.
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Acknowledgments
This research work was funded through the NSERC industrial chair (Chaire de Recherche sur l’Exploitation des Infrastructures soumises au Gel, CREIG) and a scholarship from FCAR: The writers wish to acknowledge the contributions of F.D. Gilbert (Univ. Laval) in the laboratory. Thanks also to J. Parent for drafting.
References
Balay, J., Gomes Correia, A., Jouve, P., Hornych, P., and Paute, J.-L. (1998). “Etude expérimentale et modélisation du comportement mécanique des graves non traitées et des sols supports de chaussées. Dernières avancées.” Bulletin des Laboratoires des Ponts et Chaussées No. 216, 3–18) (in French)
Bardet, J. P. (1986). “Modelling of sand behavior with bounding surface plasticity.” Proc., 2nd Int. Conf. on Numerical Models in Geomechanics, Ghent, Belgium, 79–90
Diaz-Rodriguez, J. A., Leroueil, S., and Aleman, J. D. (1992). “Yielding of Mexico City clay and other natural clays.” J. Geotech. Eng., 118(7), 981–995.
Ishihara, K. (1993). “Liquefaction and flow failure during earthquakes.” Geotechnique, 34(3), 415–421.
Jardine, R. J., Potts, D. M, Fourie, A. B., and Burland, J. B. (1986). “Studies of the influence of non-linear stress-strain characteristics in soil-structure interaction.” Geotechnique, 26(3), 377–396.
Jardine, R. J., Potts, D. M, St. John, H. D., and Hight, D. W. (1991). “Some practical applications of a non linear ground.” Proc., 10th European Conf. on Soil Mechanics and Foundations Engineering, Firenze, Italy, 1, 223–228.
Leroueil, S., and Hight, D. W. (2003). “Behaviour and properties of natural soils and soft rocks.” Characterisation and engineering properties of natural soils, E. Tan et al. eds., A. A. Balkema, Rotterdam, The Netherlands, 29–254.
Leroueil, S., and Vaughan, P. R. (1990). “The general and congruent effects of structure ion natural soils and weak rocks.” Geotechnique, 40(3), 467–488.
Miura, N., Murata, H., and Yasufuku, N. (1984). “Stress-strain characteristics of sand in a particle crushing region.” Soils Found. (24), 77–89.
Miura, N., and Yamamoto, N. (1982). “On the yield curve of sand in particle crushing regions.” Proc., JSCE, 326, 83–90.
Pestana, J. M., and Whittle, A. J. (1999). “Formulation of a unified constitutive model for clays and sands.” Int. J. Numer. Analyt. Meth. Geomech., 23, 1215–1243.
Roscoe, K. H., and Burland, J. B. (1968). “On the generalised stress-strain behaviour of wet clay.” Engineering plasticity, J. Heyman and F. A. Leckie, eds., Cambridge University Press, Cambridge, Mass., 535–609.
Tavenas, F. A., and Leroueil, S. (1977). “Effects of stresses and time on yielding of clays” Proc., 9th Int. Conf. on Soil Mechanics and Foundations Engineering, Tokyo, 1, 319–326.
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© 2006 ASCE.
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Received: Jun 7, 2004
Accepted: Jul 26, 2005
Published online: Feb 1, 2006
Published in print: Feb 2006
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