WINTER ASPHALTING IS TESTED IN WOODBRIDGE

DURING A WEEK OF JANUARY 1967, WHEN TEMPERATURES VARIED FROM THE LOW 40'S TO BELOW FREEZING, EXPERIMENTS WERE UNDERTAKEN TO FIND OUT WHAT THE PROPER TEMPERATURES, LIFT THICKNESSES AND LAY-DOWN PRACTICES SHOULD BE IN ORDER TO CONTINUE ASPHALT PAVING THROUGHOUT THE WINTER. TESTS ALSO INCLUDED THE USE OF SUBGRADE INSULATION. ONE SECTION WAS PAVED WITH A MIX HAVING A RUBBER ADDITIVE. PRELIMINARY RESULTS SUGGEST THAT MIXES LAID AT HIGH TEMPERATURES HAVE HIGHER MEAN BULK SPECIFIC GRAVITY THAN THOSE LAID AT LOWER TEMPERATURES. INSULATED SECTIONS HAD THE HIGHEST DENSITIES. HEAT LOSSES TO THE UNINSULATED, FROZEN SUBGRADES WERE HIGHER THAN TO THE SUBFREEZING AMBIENT AIR. RUBBER ADDITIVES HELPED TO MAINTAIN THE HIGH TEMPERATURES DURING THE ROLLER OPERATIONS.

  • Publication Date: 1968-3-4

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  • Accession Number: 00214802
  • Record Type: Publication
  • Report/Paper Numbers: pp 22-25
  • Files: TRIS
  • Created Date: May 1 1994 12:00AM