FLEXIBLE PAVEMENT LAYER THICKNESS DESIGN

THICKNESS DESIGN OF FLEXIBLE PAVEMENTS IS DISCUSSED FROM THE ASPECT OF LAYER STRENGTHS AND HOW THEY AFFECT THE OVERALL THICKNESS OF THE PAVEMENT. THE CONCEPT AND USE OF LAYER EQUIVALENCY IS DESCRIBED. THE AASHO ROAD TEST STUDIES MADE AN EXTENSIVE STUDY OF LAYER EQUIVALENCY VALUES OR SUBSTITUTION RATIOS FOR ASPHALT CONCRETE SURFACING AND BASE MATERIALS. RESULTS OF THESE TESTS ARE DISCUSSED. THE LAYER EQUIVALENCY CONCEPT LEADS TO ECONOMICAL USE OF LOCAL AGGREGATES AND PERMITS VARYING THE BASE THICKNESS WITH STRENGTH IN COST CONTROL. HOWEVER, IT IS FELT THAT THERE IS NEED TO DOCUMENT EQUIVALENCY VALUES FOR MANY MORE TYPES OF ASPHALT BASES TO TAKE ECONOMIC ADVANTAGE OF THE LAYER EQUIVALENCY CONCEPT.

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Filing Info

  • Accession Number: 00205834
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 28 1970 12:00AM