This problem of setting up a failure condition and a flow-rule for a granular material in a general state of stress (a state where all 3 main stresses are different) is considered, and a true triaxial apparatus in which a sand sample can be subjected to an arbitrary state of stress and which allows measurement of the strains occurring along the stress-path is described. The apparatus is equipped with 3 spindles, one upper spindle and two side spindles, the former to give the sample a constant rate of strain in the vertical direction, and the latter two to control the strain rates in the horizontal directions, keeping the smaple as a whole horizontally fixed. Further details of apparatus are described and test results are presented and discussed. Conclusions relating to the increasing friction angle, a new failure condition (rupture condition contains 3 parameters which are dpendent on the void ratio), line ruptures, condition of normalcy, and the proportionality factor are presented.

  • Corporate Authors:

    Danish Academy of Technical Sciences

    Danish Geotechnical Institute, 1 Maglebjergvej
    Dk-2800 Lyngny,   Denmark 
  • Authors:
    • Bonding, N
  • Publication Date: 1977

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 51 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00170880
  • Record Type: Publication
  • Report/Paper Numbers: Bulletin No. 30
  • Files: TRIS
  • Created Date: Mar 29 1978 12:00AM