THE FRACTURE BEHAVIOR OF FIBRE REINFORCED CONCRETE

THE WORK OF FRACTURE, AND THE CRITICAL STRESS INTENSITY FACTOR HAVE BEEN DETERMINED FOR THE FAILURE IN BENDING NOTCHED SAMPLES OF SAND/CEMENT MORTAR REINFORCED WITH SHORT, RANDOMLY-DISTRIBUTED FIBRES OF GLASS, HIGH CARBON STEEL, AND MILD STEEL. RESULTS WERE OBTAINED ON WET AND DRY STORED MATERIAL AFTER 7 WEEKS AND AGAIN AFTER 6 MONTHS CURING. THERE IS CLEAR EVIDENCE THAT THE HIGHEST FRACTURE RESISTANCE IS OBTAINED IN THE LONG TERM BY REINFORCEMENT WITH MILD STEEL. HOWEVER, WHEREAS THE WORK OF FRACTURE OF PLAIN CONCRETE CAN BE INCREASED BY TWO ORDERS OF MAGNITUDE BY ADDING AS LITTLE AS 2 VOL. % OF STEEL WIRES, THE MORE CRITICAL STRESS INTENSITY FACTOR IS INCREASED AT MOST BY A FACTOR OF 2. GLASS FIBRE RAISES THE WORK OF FRACTURE BY A FACTOR OF ONLY 40. THE EXPERIEMENTAL VALUES OF THE WORK OF FRACTURE FOR WIRE REINFORCED CONCRETE ARE COMPARED WITH THEORETICAL ESTIMATES BASED ON CONSIDERATIONS OF FIBRE PULL-OUT AND FIBRE DEFORMATION.

  • Corporate Authors:

    Cement & Concrete Research /UK

    ,    
  • Authors:
    • Harris, B
    • Varlow, J
    • Ellis, C D
  • Publication Date: 1972-7

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 447-61
  • Serial:
    • Volume: 2
    • Issue Number: 4

Subject/Index Terms

Filing Info

  • Accession Number: 00214329
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: TRIS
  • Created Date: Jun 5 1974 12:00AM