THE CONTRACT BETWEEN CEMENT PASTE AND AGGREGATES AND ITS EFFECT ON RUPTURE PHENOMENA IN CONCRETE

THE MOST IMPORTANT PASTE AND AGGREGATE PARAMETERS DETERMINING THE STRENGTH OF CONCRETE ARE THE STRENGTH OF THE PASTE, THE SIZE AND SHAPE OF THE AGGREGATES, THIER SURFACE TEXTURE, AND THEIR MODULUS OF ELASTICITY. THEORIES OF CONCRETE FAILURE ARE MENTIONED BRIEFLY, AND IT IS SUGGESTED THAT GRIGGITHS CRACK THEORY MAY EXPLAIN SEVERAL ASPECTS OF CONCRETE FAILURE. THE RESULTS OF AN EXPERIMENTAL INVESTIGATION OF RUPTURE PHENOMENA IN CONCRETE SUBJECTED TO TENSION ARE PRESENTED. SPLITTING TENSILE STRENGTHS ARE CORRELATED WITH THE NUMBER OF RUPTURED PARTICLES OF COARSE AGGREGATE IN THE FRACTURE PLANES OF THE SPLIT CYLINDERS. THE SIZE, SHAPE, AND MINERALOGICAL TYPE OF THE COARSE AGGREGATE, AS WELL AS THE STRENGTH OF THE MORTAR, WERE VARIED IN THE TESTS. A FORMULA BASED ON THE TEST RESULTS EXPRESSES THE TENSILE STRENGTH OF THE CONCRETE AS A FUNCTION OF THE RELEVANT VARIABLES. IT IS CONCLUDED THAT THE STRENGTH OF THE MORTAR IS THE MOST IMPORTANT PARAMETER DETERMINING THE TENSILE STRENGTH OF THE CONCRETE, PROVIDED THAT THE MODULUS OF ELASTICITY AND THE TENSILE STRENGTH OF THE COARSE AGGREGATE ARE GREATER THAN THOSE OF THE MORTAR MATRIX. /AUTHOR/

  • Supplemental Notes:
    • Vol 9,no 1,PP 1-26
  • Authors:
    • Nepper-christensen, P
  • Publication Date: 1965-1

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  • Accession Number: 00212365
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 27 1994 12:00AM