LAYER ANALYSIS OF THE BRAMPTON TEST ROAD AND APPLICATION TO PAVEMENT DESIGN

CONSIDERABLE ATTENTION HAS BEEN DEVOTED, FURING THE PAST DECADE, TO DEVELOPING A PAVEMENT DESIGN SYSTEM BASED ON STRUCTURAL ANALYSIS CONCEPTS. THE IMPLEMENTATION OF A DESIGN SYSTEM REQUIRES A STRUCTURAL MODEL THAT WILL CALCULATE THE SERVICEABILITY-AGE HISTORY OF VARIOUS ALTERNATIVE STRATEGIES. CONSEQUENTLY, IT IS ESSENTIAL TO RELATE THE STRUCTURAL ANALYSIS OUTPUTS OF STRESSES, STRAINS, AND DEFLECTIONS TO THE SUBSEQUENT PERFORMANCE OF THE PAVEMENT UNDER DIFFERENT TRAFFIC AND ENVIRONMENTAL CONDITIONS. ONE OBJECTIVE OF A RECENT STUDY OF THE BRAMPTON TEST ROAD WAS TO DEVELOP THESE RELATIONS FOR CONDITIONS IN SOUTHERN ONTARIO. BISTRO AND CHEVRON COMPUTER PROGRAMS WERE USED IN ITERATIVE PROCEDURES TO CALCULATE PAVEMENT STRUCTURAL RESPONSE OF STRESSES, STRAINS, AND DEFLECTIONS OF EACH OF THE BRAMPTON TEST ROAD SECTIONS. THE MODULI VALUES REQUIRED FOR THE ANALYSIS WERE DERIVED FROM LABORATORY TEST DATA PROVIDED BY THE ASPHALT INSTITUTE. THESE CALCULATED STRUCTURAL RESPONSES WERE THEN CORRELATED TO OBSERVED OBSERVED PAVEMENT BEHAVIOR AND PERFORMANCE MEASUREMENTS OF THE TEST SECTIONS. CHARTS TO PREDICT SERVICEABILITY LOSSES AS A FUNCTION OF TRAFFIC, TYPE OF BASE MATERIAL, AND VERTICAL STRESSLEVEL ON SUBGRADE SURFACE ARE DEVELOPED. A GOOD RELATION IS FOUND BETWEEN THE MEASURED BENKELMAN BEAM REBOUNDS AND CALCULATED SUBGRADE SURFACE DEFLECTION. EQUIVALENCIES OF VARIOUS TYPES OF BASE MATERIALS ARE DEVELOPED BASED ON EQUAL LOSS OF SERVICEABILITY. FINALLY, THE PAPER PRESENTS A STRUCTURAL DESIGN SYSTEM FOR FLEXIBLE PAVEMENTS BASED ON USE OF LAYERED ANALYSIS TECHNIQUES. IT ALSO DISCUSSES, THROUGH AN EXAMPLE PROBLEM, HOW THIS FITS INTO OVERALL PAVEMENT MANAGEMENT SYSTEMS.

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 113-126
  • Monograph Title: Pavement systems analyses
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00206132
  • Record Type: Publication
  • ISBN: 0309022509
  • Files: TRIS, TRB
  • Created Date: May 15 1974 12:00AM