Effect of density on the drained deformation behavior of Shirasu (volcanic sandy soil) under three-dimensional stresses.

HARUYAMA MOTOHISA

doi:10.3208/sandf1972.27.1

The effect of density on the drained deformation properties of pyroclastic flow deposits, so called Shirasu, distributed in the Southern Kyushu, Japan, was investigated by using a triaxial testing apparatus with independent stress-control systems. Hydrostatic compression tests and radial shear tests maintaining a constant mean principal stress were performed on Shirasu specimens prepared by pluviation through water. The test results indicate that the reconstituted specimens of Shirasu were characterized by an inherent cross-anisotropy and a density-dependence of their deformation properties. In general, the specimens had a low compressibility and a high expansibility in the direction of specimen-deposition compared with the direction along the bedding plane. The maximum shear strength in the identical stress state having different stress-path occurred when the major principal stress was applied to the direction of the specimen-deposition. The change of the deformation-strength properties was caused by the change of strain increment ratio which depends on the dilatancy occurring under the different stress path.

Effect of density on the drained deformation behavior of Shirasu (volcanic sandy soil) under three-dimensional stresses.

Bibliographic Information

Search this article

Description

Journal

Citations (3)*help

References(20)*help

Keywords

Details 詳細情報について

Export

Report a problem