STRESS-STRAIN BEHAVIOR AND YIELDING CHARACTERISTICS OF EASTERN OSAKA CLAY

The aim of this paper is to study the geotechnical and/or mechanical behavior of sensitive Eastern Osaka clay using the test results of clay sampled in the Tsurumi district. For this paper, we have carried out a series of tests for sensitive clay sampled in the eastern Osaka, Japan. The unconfined compression tests, laboratory vane tests, oedometer tests, isotropic and anisotropic consolidation tests, and the isotropically and anisotropically consolidated undrained tests were carried out to clarify the strength-deformation characteristics and to determine the strain-rate effect and yielding characteristics. Undrained cyclic triaxial tests were also performed to obtain the effect of cyclic loading on the deformation. In addition, isotropically consolidated undrained tests for specimens trimmed with several different angles to the sedimentation plane and undrained torsional tests were conducted related to the initial structural anisotropy.

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