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Geomechanics and Engineering
  Volume 1, Number 3, September 2009, pages 241-257

Compressibility of Changi sand in K0 consolidation
D. Wanatowski,J. Chu and C. L. Gan

    The one-dimensional compressibility of sand is an important property for the estimation of settlement or deformation of sand deposits. The K0 value of sand is also an important design parameter. Experimental results are presented in this paper to study the compressibility of sand in K0 consolidation tests. The K0 consolidation tests were carried out using a triaxial cell and a plane-strain apparatus. Specimens prepared using both the moist tamping and the water sedimentation methods were tested. The testing data demonstrate that the type of testing apparatus does not affect the K0 measurement if proper boundary conditions are imposed in the tests. The data also show that the compressibility and the K0 value of loose sand specimens prepared using the moist tamping method are very sensitive to the variation of void ratio. The K0 values measured from these tests do not agree with the K0 values calculated from Jaky
Key Words
    earth pressure; compressibility; consolidation; laboratory tests; sand fabric; triaxial; planestrain.
D. Wanatowski: Nottingham Centre for Geomechanics, Faculty of Engineering, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom
J. Chu: School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798
C. L. Gan: SPS Overlay Asia Pte Ltd., 1 Maritime Square, Harbour Front Centre, Singapore 099253

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