The present paper is concerned with the general properties of fracture criteria of rock-like materials such as mortar, concrete and rocks. The concepts for fracture surfaces of fracture initiation, subsequent fracture and final fracture are introduced at first, then the corresponding possible fracture criteria for both isotropic and anisotropic materials are discussed. The general fracture criteria are expressed by convex surfaces in the principal stress space, which are approximately derived by extending the two- dimensional generalized Griffith criterion or other criteria such as the Coulomb or the Mohr into three dimensions, noting that the intermediate principal stress is physically interpreted at the structural level to have little effect on fracture. The criteria proposed in the present paper are well supported by the experimental results. See also IRRD Abstract No 205029. /Author/

Media Info

  • Features: Figures; References;
  • Pagination: p. 1-11

Subject/Index Terms

Filing Info

  • Accession Number: 00083424
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Conf Paper
  • Files: ITRD, TRIS
  • Created Date: May 29 1975 12:00AM