THE INFLUENCE OF STRESS SYSTEM ON THE BEHAVIOR OF SATURATED CLAYS DURING UNDRAINED SHEAR

Abstract : The study investigates one phase of the overall problem of determining in situ properties, namely, the effects of stress system variables on the undrained shear behavior of saturated clays. Stress system variables refer to the direction and relative magnitude of the three principal stresses during consolidation and during shear. The report reviews and analyzes previous work in the area and presents the results of an extensive series of consolidated-undrained triaxial tests with pore pressure measurements on normally consolidated Boston blue clay prepared from a dilute slurry. The effects on undrained shear behavior of the following topics are considered in detail: anisotropic consolidation, perfect sampling, the intermediate principal stress, and rotation of principal planes during shear. These variables are shown to have a significant influence on most of the strength parameters.

[1]  H. Bolton Seed,et al.  EFFECTS OF SAMPLING AND DISTURBANCE ON THE STRENGTH OF SOFT CLAYS , 1964 .

[2]  William Anthony Bailey.  The effects of salt on the shear strength of Boston blue clay , 1961 .

[3]  Alec Westley Skempton,et al.  The Behaviour of Saturated Clays During Sampling and Testing , 1963 .

[4]  T. Lambe,et al.  The Strength of “Undisturbed” Clay Determined from Undrained Tests , 1964 .

[5]  M. J. Hvorslev.  PHYSICAL COMPONENTS OF THE SHEAR STRENGTH OF SATURATED CLAYS , 1960 .

[6]  Charles C. Ladd.  Physico-chemical analysis of the shear strength of saturated clays , 1961 .

[7]  N. Simons.  The Effect of Overconsolidation on the Shear Strength Characteristics of an Undisturbed Oslo Clay , 1960 .

[8]  C. Crawford,et al.  The Influence of Rate of Strain on Effective Stresses in Sensitive Clay , 1960 .

[9]  Alan W. Bishop,et al.  The Relevance of the Triaxial Test to the Solution of Stability Problems , 1960 .

[10]  Tien H. Wu,et al.  Geotechnical Properties of Glacial Lake Clays , 1958 .

[11]  J B Hansen.  RELATIONSHIPS BETWEEN STABILITY ANALYSES WITH TOTAL AND WITH EFFECTIVE STRESSES , 1962 .

[12]  Birger Schmidt,et al.  Earth Pressures at Rest Related to Stress History , 1966 .

[13]  R. H. G. Parry,et al.  Triaxial Compression and Extension Tests on Remoulded Saturated Clay , 1960 .

[14]  D. H. Cornforth,et al.  SOME EXPERIMENTS ON THE INFLUENCE OF STRAIN CONDITIONS ON THE STRENGTH OF SAND , 1964 .

[15]  D. J. Henkel.  The Relationships between the Effective Stresses and Water Content in Saturated Clays , 1960 .

[16]  James K. Mitchell,et al.  Fundamental Aspects of Thixotropy in Soils , 1960 .

[17]  K. Lo.  Shear Strength Properties of a Sample of Volcanic Material of the Valley of Mexico , 1962 .

[18]  J. Lowe,et al.  Effect of Anisotropic Consolidation on the Undrained Shear Strength of Compacted Clays , 1960 .

[19]  R. Whitman.  Some Considerations and Data Regarding the Shear Strength of Clays , 1960 .

[20]  A. Casacrande,et al.  Effect of Rate of Loading on the Strength of Clays and Shales at Constant Water Content , 1951 .