EFFECT OF SIZE AND SHAPE OF TEST SPECIMENS ON DIRECT TENSILE STRENGTH OF CONCRETE

EXPERIMENTAL INVESTIGATION HAS PROVED THE RELATIONSHIP BETWEEN SIZE AND SHAPE OF TEST SPECIMENS - CYLINDERS AND PRISMS - AND THE DIRECT TENSILE STRENGTH OF CONCRETE. ALTHOUGH TWO DIFFERENT GRADES OF CONCRETE WERE TESTED WITH RIVER PEBBLES AND WITH GRANULATED AGGREGATES, NO ESSENTIAL DIFFERENCE WAS FOUND IN THE CURVE OF THE PERCENTUAL INCREASE OF THE TENSILE STRENGTH OF THE CONCRETE IN DEPENDENCE ON THE SIZE AND SHAPE OF THE TEST SPECIMENS. FROM THE GENERALLY ESTABLISHED CURVE OF THE PERCENTUAL INCREASE OF THE DIRECT TENSILE STRENGTH OF THE CONCRETE IN DEPENDENCE ON THE DECREASING VOLUME OF THE TEST SPECIMENS IT IS POSSIBLE TO ASCERTAIN THE STRENGTH OF SPECIMENS OF BASIC DIMENSIONS IF THE MAXIMUM GRAIN SIZE OF THE AGGREGATES DOES NOT EXCEED 1/3 OF THE SMALLEST DIMENSION OF THE TEST SPECIMEN, AND IF ITS SLENDERNESS CORRESPONDS TO THE RATIO H/D = 2 FOR CYLINDERS AND H/A = 3 FOR PRISMS. IN PRACTICE IT IS POSSIBLE, HOWEVER, TO NEGELECT THE INFLUENCE OF SIZE AND SHAPE OF THE TEST SPECIMENS (EXPRESSED BY THEIR VOLUME) ON THE DIRECT TENSILE STRENGTH OF CONCRETE IN THE RANGE OF USUALLY EMPLOYED DIMENSIONS OF THESE SPECIMENS PROVIDED THAT THIS STRENGTH IS NOT INFLUENCED BY THEIR SLENDERNESS. /AUTHOR/

  • Supplemental Notes:
    • No 36, pp 175-184, 7 FIG, 3 TAB, 3 PHOT, 6 REF
  • Authors:
    • Kadlecek, V
    • Spetla, Z
  • Publication Date: 1967-9

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Filing Info

  • Accession Number: 00212835
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: TRIS
  • Created Date: Mar 20 1973 12:00AM