FRACTURE MODEL OF CONCRETE LOADED OVER A LIMITED AREA. FRACTURE OF CONCRETE AND ROCK: RECENT DEVELOPMENTS. PAPERS PRESENTED AT THE INTERNATIONAL CONFERENCE, UNIVERSITY OF WALES, COLLEGE OF CARDIFF, SCHOOL OF ENGINEERING, SEPTEMBER 20-22, 1989

The results of 48 specimens of parallel-sided or tapered prisms subjected to strip or central square loading aimed at studying fracture mechanism of concrete loaded over a limited area are briefly described. It has been found that the existing models such as "wedge splitting model" and "confinement enhancing model" are not always consistent with the test results. The dominant factors influencing the bearing strength of concrete are the presence of longitudinal stress gradient and the restraints of surrounding unloaded concrete. An instability theory of micro-strips is used to explain the bearing failure of concrete. A "restrained prismoid model" of bearing failure of concrete is suggested.(A) For the covering abstract of the conference see IRRD 829348.

  • Availability:
  • Corporate Authors:

    Elsevier Science Publishers

    Crown House, Linton Road
    Barking, Essex IG11 8JU,   England 
  • Authors:
    • Cai, Shao-Huai
    • Wei, Shang-Min
  • Publication Date: 1989

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00605959
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • ISBN: 1-85166-414-9
  • Files: ITRD, TRIS
  • Created Date: Mar 31 1991 12:00AM