Abstract
Included in this paper are the results of an experimental study directed toward improving our understanding of the complex relationship between the stress-strain behavior of clay and its initial fabric and soil-water potential. Three blocks of a kaolinite clay were consolidated from a slurry under controlled conditions of pore fluid chemistry and stress path, and the fabrics of these samples were evaluated by use of scanning electron microscopy, optical microscopy, andX-ray diffraction. Upon completion of consolidation, test specimens trimmed from these samples were placed under air pressure in an extractor and brought to equilibrium at soil-water potentials up to 15 bars. Fabric changes during this phase are expressed in terms of changes in dry density. Then, these specimens were subjected to a constant strain rate uniaxial compression test, and empirical relationships among the undrained modulus,Poisson's ratio, strength parameter, initial fabric, and soil-water potential at the beginning of the test are presented.
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