INFLUENCE OF BEAM SIZE ON THE SHEARING FRACTURE OF MORTAR AND CONCRETE BEAMS

RESULTS ARE PRESENTED OF AN ANALYTICAL AND EXPERIMENTAL INVESTIGATION OF THE DIAGONAL TENSION FRACTURE OF CONCRETE BEAMS. SPECIFICALLY, THE INFLUENCE OF BEAM SIZE AND VARIATIONS OF MIX COMPOSITION WERE COMPARED. THE GRIFFITH THEORY OF CRACK PROPAGATION AND ENERGY DISSIPATION WAS EXTENDED TO CONCRETE AND USED AS THE ANALYTICAL TOOL FOR PURPOSE OF COMPARISON. SOME OF THE MAJOR CONCLUSIONS OF THE STUDY ARE AS FOLLOWS: (1) THE FAILING DIAGONAL TENSION LOAD VARIES LINEARLY AS A FUNCTION OF SIZE FOR CONSTANT VALUES OF SHEAR SPAN TO DEPTH, AND SHEAR SPAN TO LENGTH RATIOS. THEREFORE SIMILITUDE IS APPLICABLE IN PREDICTING DIAGONAL TENSION FAILURE OF PROTOTYPE BEAMS FROM FAILURE OF MODEL BEAMS. (2) THE STRAIN ENERGY RELEASE RATE IS NOT INFLUENCED BY THE SIZE OF THE MEMBER AND MAY BE CONSIDERED A MATERIAL CONSTANT. (3) FOR ALL THREE RESPONSES INVESTIGATED, I.E., LOAD AT THE FORMATION OF THE FAILING CRACK, TOTAL DISSIPATED ENERGY, AND STRAIN ENERGY RELEASE RATE, THERE WAS NO DECLARED DIFFERENCE BETWEEN THE RESPONSES OF THE PLAIN MORTAR MIX AND THE MIX WITH COARSE AGGREGATE IN IT. /BPR/

  • Supplemental Notes:
    • Hpr-1/1/, C-2-64
  • Corporate Authors:

    University of Florida, Gainesville

    Gainesville, FL  United States  32611

    Florida State Road Department

    ,    
  • Authors:
    • Cassaro, M A
    • Csercsics, J
  • Publication Date: 1967-1

Subject/Index Terms

Filing Info

  • Accession Number: 00212023
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS, STATEDOT
  • Created Date: Dec 21 1994 12:00AM