Compaction-Induced Anisotropy in the Strength and Deformation Characteristics of Cement-Mixed Gravelly Soils
The effects of inherent anisotropy produced by compaction on the strength and deformation characteristics of unsaturated specimens of compacted cement-mixed gravelly soil were evaluated by performing a series of consolidated drained (CD) triaxial compression (TC) test. Specimens were prepared by compacting in the direction of compression in the TC tests and its perpendicular direction. It is shown that these two types of specimen exhibited nearly the same stiffness at small strain and viscous property. The effects of compaction in the two orthogonal directions increase with an increase in the strain with noticeable effects on the peak strength and more in the post-peak regime. The effects are however generally small, much less significant than those observed with air-pluviated unbound sand. The effects of total compacted dry density of solid and curing period on the stress-strain behaviour were found nearly the same between the specimens compacted in the two orthogonal directions.
KeywordsAnisotropy Transportation Sandstone Brittleness Compaction
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- Barbosa-Cruz, E.R. and Tatsuoka, F. (2000). Stress-strain properties from elastic behaviour to peak strength of compacted cement-mixed sand. Grouting, Soil Improvement, Goesystems including Reinforcement (Rathamayer eds.), 3–10.Google Scholar
- Hansen, K. D. and Reinhardt W.G. (1990). Roller-compacted concrete dams. New York: McGraw-Hill, Inc.Google Scholar
- Kongsukprasert, L. and Tatsuoka, F. (2003). Viscous effects coupled with ageing effects on the stress-strain behavior of cement-mixed granular materials and a model simulation. Proc. 3rd Int. Conf. on Deformation Characteristics of Geomaterials, Lyon (Di Benedetto et al. eds.), Balkema, (1), 569–577Google Scholar
- Kongsukprasert, L., Tatsuoka, F. and Tateyama, M. (2005). Several factors affecting the strength and deformation characteristics of cement-mixed gravel. Soils and Foundations, 45(3), 107–124Google Scholar
- Kongsukprasert. L. (2003). Time effects on the strength and deformation characteristics of cement-mixed gravel. Doctoral dissertation, University of Tokyo.Google Scholar
- Kongsukprasert. L. and Tatsuoka, F. (2005). effects of compaction-induced anisotropy in the stress-strain-time behaviour of cement-mixed gravelly soil. Proc. 40th Annual conference, JGS.Google Scholar
- Santucci de Magistris, F., Koseki, J., Amaya, M., Hamaya, S., Sato, T. and Tatsuoka, F. (1999). A triaxial testing system to evaluate stress-strain behaviour of soils for wide range of strain and strain rate. Geotechnical Testing Journal, ASTM, 22(1), 44–60.Google Scholar
- Schrader, E.K. (1988). Compaction of roller compacted concrete. Consolidation of concrete (SP-96), ACI (S. H. Gebler eds.), 77–101.Google Scholar
- Tatsuoka, F. (2004). Cement-mixed soil for Trans-Tokyo Bay Highway and railway bridge abutments, Geotechnical Engineering for Transportation Projects, Proc. of GeoTrans 04, L.A., ASCE GSP No. 126 (Yegian & Kavazanjian eds.), 18–76.Google Scholar