Abstract
Two series of tests using miniature pressuremeter and torsionmeter were carried out on sand specimens in a triaxial chamber in which stress boundary conditions were fully controlled. The deformation moduli estimated based on the elasticity theory were compared with those obtained from triaxial tests subjected to various types of stress path starting from its isotropic consolidation state.The results showed that the deformation moduli corresponding to the Young's modulus E, Poisson's ratio ν and shear modulus G depend on stress path and stress level of the specimens. The deformation moduli estimated from the pressuremeter tests and torsionmeter tests were in the range of those estimated from triaxial tests under various conditions of stress paths.On the sandy deposits, the deformation moduli estimated from the pressuremeter and the torsionmeter tests could not be widely used for engineering practices simply because the pressuremeter and the torsionmeter can provide only limited stress conditions.
