NATURALLY CEMENTED SENSITIVE SOILS

MANY EXTREMELY SENSITIVE OR QUICK CLAY SOILS, PARTICULARLY THOSE FOUND IN CANADA, SHOW CHARACTERISTICS OF NATURAL CEMENTATION BONDING BETWEEN PARTICLES. THESE SOILS INCLUDE NOT ONLY THE BRACKISH- MARINE LEDA-TYPE CLAY DEPOSITS BUT ALSO FRESH WATER VARVED CLAYS, DEEP MARINE CLAYS, AND OTHERS. ALTHOUGH THE CAUSES OF CEMENTATION MAY VARY, THE MECHANICAL BEHAVIOR OF THESE SOILS IS SIMILAR. THE UNIQUE STRENGTH CHARACTERISTIC OF NATURALLY CEMENTED SOILS IS A YIELD CURVE, DEFINED BY BREAKDOWN OF CEMENTATION, WHICH IS INDEPENDENT OF THE CLASSICAL EFFECTIVE STRESS PATTERNS OF YIELDING OR FAILURE FOR SOILS. AT LOW STRESSES THE INFLUENCE OF CEMENTATION IS TO INCREASE STRENGTH AND RESISTANCE TO DEFORMATION. EXAMPLES FOR A VARIETY OF NATURALLY CEMENTED SOILS DEMONSTRATE THAT ANISOTROPY AND NONHOMOGENEOUS EFFECTS SUCH AS FISSURES AND VARVES ARE IMPORTANT. /AUTHOR/

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: p. 139-52
  • Serial:
    • GEOTECHNIQUE
    • Volume: 22
    • Issue Number: 1
    • Publisher: Thomas Telford Limited
    • ISSN: 0016-8505

Subject/Index Terms

Filing Info

  • Accession Number: 00238223
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: TRIS
  • Created Date: May 29 1973 12:00AM