One-Dimensional Compression Tests on Stabilized Clays Incorporating Shear Wave Velocity Measurements

Laboratory experiments were carried out on stabilized clays to study the relationship between shear wave velocity and one-dimensional compressibility. One artificial clay, kaolin, and two natural clays, from Malaysia and Sweden, were tested. These were stabilized with either Ordinary Portland cement or a 1+1 mix of cement and unslaked lime. A purpose-built oedometer was equipped with bender elements in order to monitor the shear wave velocity during tests on 100-mm diameter, 70-mm high samples cured for a set period of seven days. Lateral stresses were also measured. Supplementary tests were conducted in standard oedometers, mainly to study the effect of the curing period. In all these tests vertical yield stresses were identified and corresponded to the onset of changes in shear wave velocity, when measured. After yield, the constrained moduli could be correlated with shear wave velocity.

[1]  Richard J. Jardine,et al.  PROPERTIES OF SOME KAOLIN-BASED MODEL CLAY SOILS , 1992 .

[2]  Suksun Horpibulsuk,et al.  ENGINEERING BEHAVIOR OF CEMENT STABILIZED CLAY AT HIGH WATER CONTENT , 2001 .

[3]  Alan J. Lutenegger,et al.  Determining intrinsic compressibility of fine-grained soils , 2004 .

[4]  J. Burland.  On the compressibility and shear strength of natural clays , 1990 .

[5]  John T. Germaine,et al.  Factors Affecting the Initial Stiffness of Cohesive Soils , 2005 .

[6]  J. H. Atkinson,et al.  Interpretation of bender element tests , 1995 .

[7]  P. Mayne,et al.  INTERPRETATION OF SEISMIC PIEZOCONE RESULTS FOR THE ESTIMATION OF HYDRAULIC CONDUCTIVITY IN CLAYS , 2002 .

[8]  Fanyu Zhu,et al.  Factors affecting at-rest lateral stress in artificially cemented sands , 1995 .

[9]  Tuncer B. Edil,et al.  At-Rest Lateral Pressure of Peat Soils , 1981 .

[10]  T. Feng.  EFFECTS OF SMALL CEMENT CONTENT ON CONSOLIDATION BEHAVIOR OF A LACUSTRINE CLAY , 2002 .

[11]  Giulia M.B. Viggiani,et al.  SMALL-STRAIN STIFFNESS OF RECONSTITUTED CLAY COMPRESSED ALONG CONSTANT TRIAXIAL EFFECTIVE STRESS RATIO PATHS , 1997 .

[12]  C. Santamarina,et al.  Study of Geoprocesses with Complementary Mechanical and Electromagnetic Wave Measurements in an Oedometer , 1995 .

[13]  B. R. Srinivasa Murthy,et al.  A critical reappraisal of compression index equations , 1986 .

[14]  Suksun Horpibulsuk,et al.  Compressibility of cement-admixed clays at high water content , 2004 .