A LABORATORY-FIELD STUDY OF HOT ASPHALTIC CONCRETE WEARING COURSE MIXTURES

RESULTS OF A LABORATORY-FIELD STUDY OF PROPERTIES AND PERFORMANCE OF ASPHALTIC CONCRETE PAVEMENTS, RANGING IN AGE FROM 3 TO 12 YEARS, FROM SIX TEST SECTIONS OF MARYLAND ROAD CONSTRUCTION PROJECTS ARE DESCRIBED. THE LOS ANGELES ABRASION WEAR LOSS FOR THE COARSE AGGREGATES USED IN THE TEST SECTIONS RANGED FROM 17 TO 39 PERCENT. COMPACTION FROM CONSTRUCTION AND TRAFFIC BOTH APPEARED TO HAVE CAUSED MINOR DEGRADATION OF THE AGGREGATES. THE DEGREE OF DEGRADATION WAS INSIGNIFICANT IN MOST INSTANCES AND IN NO CASE WAS SUFFICIENT TO AFFECT SERVICE BEHAVIOR OF THE PAVEMENTS. AIR VOIDS IN PAVEMENT FOLLOWING CONSTRUCTION COMPACTION RANGED FROM 5.6 TO 14.5 PERCENT. TRAFFIC COMPACTION PRODUCED APPRECIABLE REDUCTIONS IN PERCENTAGE OF AIR VOIDS. PAVEMENT PERFORMANCE AND RATE OF ASPHALT HARDENING WERE RELATED TO THE AMOUNT OF AIR VOIDS. A HIGH PERCENTAGE OF AIR VOIDS RESULTED IN EARLY DETERIORATION OF THE PAVEMENT. THE RESULTS OF THE STUDY TEND TO CONFIRM THAT THE 6 PERCENT AIR VOID CRITERION OF THE BUREAU OF PUBLIC ROADS MIX DESIGN PROCEDURE IS SATISFACTORY.

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  • Supplemental Notes:
    • Vol 31, No 11, PP 221-228
  • Authors:
    • Goode, J F
    • Owings, E P
  • Publication Date: 1961-12

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  • Accession Number: 00211009
  • Record Type: Publication
  • Source Agency: Highway Research Board Bibliography
  • Files: TRIS
  • Created Date: Apr 28 2000 12:00AM