DETERMINATION OF INITIAL STRESS OR REINFORCEMENT PERCENTAGE OF CONCRETE PAVEMENTS /IN DUTCH/

THE RELATIONS BETWEEN THE INITIAL STRESS THAT MUST BE APPLIED TO PRE-TENSIONING WIRES IN PRESTRESSED CONCRETE PAVEMENTS TO PREVENT CRACKING ARE DISCUSSED ALONG WITH FACTORS SUCH AS TRAFFIC LOAD, TEMPERATURE CHANGES AND GRADIENTS, CONTRACTION OF THE CONCRETE BY SHRINKAGE AND CREEP, AND RELAXATION OF THE STEEL. THE DEPENDENCY OF THE MOMENT OF RUPTURE OF THE PRESTRESSED SLABS ON THE INITIAL STRESS AND CONCRETE QUALITY IS DISCUSSED. WITH REFERENCE TO AN EXPERIMENTAL STRETCH OF PRESTRESSED CONCRETE PAVEMENT CONSTRUCTED IN 1969, A CALCULATION OF THE REQUIRED INITIAL STRESS ON THE BASIS OF WESTERGAARD'S THEORY IS GIVEN. THE INFLUENCE OF THE SLAB THICKNESS, SLAB LENGTH, AND SAFETY FACTOR ON THIS INITIAL STRESS IS DESCRIBED. IT IS REMARKED THAT WESTERGAARD'S THEORY LEADS TO A SAFETY FACTOR WHICH IS HIGHER THAN IS NECESSARY IN PRACTICE. FINALLY A CALCULATION IS GIVEN OF THE REINFORCEMENT PERCENTAGE REQUIRED FOR A CONTINUOUSLY REINFORCED CONCRETE PAVEMENT. /SWOV/RWL/RRL/

  • Supplemental Notes:
    • Vol 44, No 655, PP 149-154, 6 FIG, 2 TAB
  • Authors:
    • Bruggeling, A S
  • Publication Date: 1970-6

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Filing Info

  • Accession Number: 00205644
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Aug 23 1971 12:00AM