Effect of Cyclic True-Triaxial Boundary Types on Stress-Strain Behavior of Unbound Material
Publication: Geo-Congress 2023
ABSTRACT
The stiffness characteristics of pavement foundation layers are one of the major factors affecting long-term pavement performance. Resilient modulus (MR) is a key parameter to evaluate the behavior of geomaterials when they are subjected to continuous traffic loads. Therefore, a reliable characterization of the stress-strain behavior of geomaterials through laboratory tests is crucial for pavement design. In this study, a cyclic true-triaxial device that has the capability of conducting MR tests on prismatic specimens with mixed rigid and flexible and six rigid boundary conditions was used to determine the effects of boundary type and stress history on the stiffness characteristics of an unbound geomaterial. The test results revealed that the rigid boundary condition yielded higher MR in both vertical and horizontal directions regardless of the applied stress history. The anisotropy ratios for mixed-type and rigid boundary conditions were determined as 0.09 to 0.21 and 0.05 to 0.41, respectively.
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REFERENCES
AASHTO. AASHTO, M 145. 1991. 145-91 Standard Specification for Classification of Soils and Soil-Aggregate Mixtures for Highway Construction Purposes.
Adu-Osei, A., Little, D. N., and Lytton, R. L. 2001. Cross-anisotropic characterization of unbound granular materials. Transportation Research Record, 1757(1), pp.82–91.
ASTM. ASTM C127-15, Standard Test Method for Relative Density (Specific Gravity) and Absorption of Coarse Aggregate, ASTM International, West Conshohocken, PA, 2015, www.astm.org.
ASTM. ASTM D2487-17e1, Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System), ASTM International, West Conshohocken, PA, 2017, www.astm.org.
ASTM. ASTM D4718/D4718M-15, Standard Practice for Correction of Unit Weight and Water Content for Soils Containing Oversize Particles, ASTM International, West Conshohocken, PA, 2015, www.astm.org.
ASTM. ASTM D6913/D6913M-17, Standard Test Methods for Particle-Size Distribution (Gradation) of Soils Using Sieve Analysis, ASTM International, West Conshohocken, PA, 2017, www.astm.org.
ASTM. ASTM D698-12(2021), Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Standard Effort (12,400 ft-lbf/ft3 (600 kN-m/m3)), ASTM International, West Conshohocken, PA, 2021, www.astm.org.
Aydin, C., Hatipoglu, M., Cetin, B., and Ceylan, H. 2021. Determination of the Resilient Modulus under Anisotropic Stress Conditions. In IFCEE 2021 (pp. 381–389).
Huang, K., Ma, Q., Ma, D., and Yao, Z. 2022. Strength and deformation properties of frozen sand under a true triaxial stress condition. Soils and Foundations, 62(1), p.101089.
Ibsen, L. B., and Prasstrup, U. 2002. The Danish rigid boundary true triaxial apparatus for soil testing. Geotechnical testing journal, 25(3), pp.254–265.
Jiang, G. L., Tatsuoka, F., Flora, A., and Koseki, J. 1997. Inherent and stress-state-induced anisotropy in very small strain stiffness of a sandy gravel. Geotechnique, 47(3), pp.509–521.
Jing, P., Nowamooz, H., and Chazallon, C. 2017. Effect of anisotropy on the resilient behaviour of a granular material in low traffic pavement. Materials, 10(12), p.1382.
Lade, P. V. 1978. Cubical triaxial apparatus for soil testing. Geotechnical Testing Journal, 1(2), pp.93–101.
Liu, Y., Stolle, D., Guo, P., and Emery, J. 2014. Stress-path dependency of resilient behaviour of granular materials. International Journal of Pavement Engineering, 15(7), pp.614–622.
Reddy, K. R., Saxena, S. K., and Budiman, J. S. 1992. Development of a true triaxial testing apparatus. ASTM International.
Shao, S., Wang, Q., and Luo, A. 2017. True triaxial apparatus with rigid-flexible-flexible boundary and remolded loess testing. Journal of Testing and Evaluation, 45(3), pp.808–817.
Shapiro, S., and Yamamuro, J. A. 2003. Effects of silt on three-dimensional stress–strain behavior of loose sand. Journal of geotechnical and geoenvironmental engineering, 129(1), pp.1–11.
Sidess, A., Uzan, J., and Nigem, P. 2021. Fundamental characterisation of the anisotropic resilient behaviour of unbound granular materials. International Journal of Pavement Engineering, 22(3), pp.283–293.
Tutumluer, E., and Seyhan, U. 1999. Laboratory determination of anisotropic aggregate resilient moduli using an innovative test device. Transportation Research Record, 1687(1), pp.13–21.
Wang, Q., and Lade, P. V. 2001. Shear banding in true triaxial tests and its effect on failure in sand. Journal of engineering mechanics, 127(8), pp.754–761.
Xiao, Y., Liu, H., Chen, Y., and Zhang, W. 2014. Particle size effects in granular soils under true triaxial conditions. Géotechnique, 64(8), pp.667–672.
Yin, J. H., Cheng, C. M., Kumruzzaman, M., and Zhou, W. H. 2010. New mixed boundary, true triaxial loading device for testing three-dimensional stress–strain–strength behaviour of geomaterials. Canadian Geotechnical Journal, 47(1), pp.1–15.
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Published online: Mar 23, 2023
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