Strength Anisotropy of Compacted Decomposed Granite Soils |
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| Authors: | Tae-Gew Ham Yukio Nakata Rolando Orense Masayuki Hyodo |
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| Institution: | (1) Daewoo Engineering Company, 9-3, Sunae-Dong, Bundang-Gu, Seongnam City, 463-825, Republic of Korea;(2) Department of Civil and Environmental Engineering, Faculty of Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi ken 755-8611, Japan;(3) Department of Civil and Environmental Engineering, Faculty of Engineering, The University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand; |
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| Abstract: | In order to investigate the strength and deformation anisotropy of compacted decomposed granite soils, a series of drained
triaxial compression tests was performed on unsaturated and saturated decomposed granite soils. The specimens were subjected
to compression tests such that the angle δ of the direction of the major principal stress, σ
1, during triaxial compression relative to the compaction plane (bedding plane) varies, with δ = 0°, 45° and 90°. Test results indicated that the compressive strain of the specimens subjected to isotropic consolidation
was influenced strongly by the angle δ. In addition, the effect of the angle δ on the triaxial compressive strength and deformation was more evident in unsaturated specimens than in saturated specimens.
Based on the test results, a procedure which can be used to estimate the shear strength of unsaturated soils taking into account
various angles δ was proposed. |
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