FLIXIBLE PAVEMENT BASE COURSE STUDY

THE PURPOSE WAS TO DEVELOP A RAPID, SIMPLE, ACCURATE METHOD OF DETERMINING BULK DENSITIES OF ASPHALT BASE COURSE SPECIMENS THAT WOULD BE ALSO ALLOW FURTHER TESTING ON THESE SPECIMENS. THE NEW METHOD DEVELOPED IS IN LIEU OF THE PARAFFIN METHOD (ASTM D1188-68) FOR DETERMINING BULK SPECIFIC GRAVITIES OF COMPACTED BITUMINOUS SPECIMENS. THE SPECIFIC GRAVITY OF 10 CORES WAS DETERMINED FIRST BY USING MASKING TAPE TO SEAL THE COXES AND PREVENT ENTRY OF WATER INTO THE VOIDS DURING VOLUME DETERMINATION. AFTER DRYING THE CORES, A VOLUME DETERMINATION WAS MADE USING THE STANDARD PARAFFIN METHOD. THE SPECIFIC GRAVITY OF 79 ADDITIONAL CORES WAS THEN MEASURED BY THE TAPE METHOD, EACH RUN TWICE TO DETERMINE THE PROCEDURE'D REPEATABILITY. THE RESULTS SHOWED THE TAPE METHOD IS AN ACCEPTABLE SUBSTITUTE FOR THE PARAFFIN METHOD AND, IN FACT, AN IMPROVEMENT UPON IT. /AUTHOR/

Subject/Index Terms

Filing Info

  • Accession Number: 00210457
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: 26-2
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Apr 1 1971 12:00AM