STRENGTH AND STIFFNESS OF UNSATURATED SAND-BENTONITE 'BUFFER'

Results are presented from a series of undrained triaxial compression tests on a dense 1:1 mixture of sand and bentonite. Tests were done with degrees of saturation from 50% to 100%, confining pressures from 0.2MPa to 1.8MPa, and temperatures from 26 degrees C to 100 degrees C. The observed stress-strain behaviour is ductile. Undrained strengths increase with confining pressure and with higher suctions resulting from lower saturations. They decrease with temperature. Normalized stiffnesses E50/Su decrease with pressure and increase slowly with saturation. (A) For the covering abstract see IRRD 881647.

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 89-94

Subject/Index Terms

Filing Info

  • Accession Number: 00729073
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 90-5410-583-6
  • Files: ITRD
  • Created Date: Dec 12 1996 12:00AM