FRACTURE TOUGHNESS MEASUREMENT OF CONCRETE

FRACTURE TOUGHNESS PARAMETERS OF CONCRETES ARE EVALUATED BY MEASURING THE LOAD-DEFORMATION CHARACTERISTICS OF NOTCHED AND UNNOTCHED BEAM SPECIMENS TESTED IN FLEXURE. A WIDE RANGE OF CONCRETES, MORTARS AND CEMENT PASTES IS EXAMINED, ALONG WITH THE INFLUENCE OF DIFFERENT TYPES OF NOTCHES. THE COMPRESSIVE STRENGTH OF CONCRETES RANGED FROM 3,300 TO 9,600 LB/PER SQUARE IN. (230 TO 675 KG/PER SQUARE CM.). OVER THIS RANGE THE FRACTURE TOUGHNESS PARAMETERS TEND TO INCREASE IN PROPORTION TO CONCRETE STRENGTH PROPERTIES. HOWEVER, WHEN THE TENSILE STRENGTH DECREASED WITH SPECIAL CONCRETES, THE FRACTURE TOUGHNESS VALUES WERE FOUND TO DECREASE SIGNIFICANTLY, THUS EMPHASIZING THE IMPORTANCE OF TENSILE STRENGTH TO ASSESS CONCRETE IN SITUATIONS WHERE IMPACT LOADING MAY OCCUR. /A/RRL/

  • Supplemental Notes:
    • Rpt No R-42, 35 PP, 8 FIG, 2 TAB, 8 REF
  • Corporate Authors:

    University of New South Wales

    Gate 9, High Street
    Kensington, New South Wales  Australia  2052
  • Authors:
    • Welch, G B
    • Haisman, B
  • Publication Date: 1969-1

Subject/Index Terms

Filing Info

  • Accession Number: 00213012
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Sep 28 1970 12:00AM