THE STRUCTURAL DESIGN OF CONCRETE PAVEMENTS - PART 1 - A DESCRIPTION OF THE INVESTIGATION

RESEARCH WAS CONDUCTED TO STUDY THE FOLLOWING: (1) THE EFFECTS OF LOADS PLACED IN VARIOUS WAYS ON PAVEMENT SLABS OF UNIFORM THICKNESS, (2) THE BALANCE OF DESIGN OR RELATIVE ECONOMY OF TYPICAL PAVEMENT SLAB CROSS-SECTIONS, (3) THE BEHAVIOR UNDER LOAD AND COMPARATIVE STRUCTURAL EFFECTIVENESS OF TYPICAL LONGITUDINAL AND TRANSVERSE JOINT DESIGNS, AND (4) THE EFFECTS OF TEMPERATURE CONDITIONS AND OF MOISTURE CONDITIONS ON THE SIZE, SHAPE, AND LOAD-CARRYING ABILITY OF PAVEMENT SLABS. A GROUP OF TEN FULL-SIZE CONCRETE PAVEMENT SLABS WERE CONSTRUCTED AS THE TEST SECTIONS. THE IMPORTANCE OF SUBGRADE UNIFORMITY IN ANY TEST OF THE STRUCTURAL ACTION OF PAVEMENT SLABS WAS RECOGNIZED. TRANSVERSE AND LONGITUDINAL JOINT DESIGNS INCLUDED IN THE INVESTIGATION ARE DESCRIBED. THE TEST PROCEDURE AND TEST METHODS ARE ANALYZED AND DISCUSSED. LOAD TESTS ON PAVEMENT SLABS WERE CONDUCTED WHICH FORMED THE BASIS OF: (1) THE EXAMINATION OF THE WESTERGAARD ANALYSIS, (2) THE STUDY OF THE PAVEMENT CROSS- SECTIONS, AND (3) THE DETERMINATION OF THE STRUCTURAL EFFICIENCY OF THE DIFFERENT JOINT DESIGNS. METHODS OF APPLYING LOADS ARE DESCRIBED. THE STRAIN GAGES, CLINOMETERS, THERMOCOUPLES AND MICROMETERS USED ARE DESCRIBED. AUXILIARY TESTS WERE CONDUCTED TO DETERMINE: (1) THE PHYSICAL CHARACTERISTICS OF THE SUBGRADE, (2) THE PHYSICAL PROPERTIES OF THE CONCRETE, (3) THE THERMOPROPERTIES OF THE CONCRETE, AND (4) THE EFFECTIVE MOISTURE CONDITIONS ON THE STRENGTH AND STIFFNESS OF THE CONCRETE. STRENGTH TESTS OF THE CONCRETE WERE MADE TO DETERMINE THE ULTIMATE STRENGTH IN COMPRESSION AND IN FLEXURE SO THAT SAFE WORKING STRESS LIMITS MIGHT BE FIXED.

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  • Accession Number: 00205582
  • Record Type: Publication
  • Files: NTL, TRIS
  • Created Date: Jun 10 1994 12:00AM