THE EFFECTS OF AIR AND BASE TEMPERATURE ON COMPACTION

AN INVESTIGATION WAS CONDUCTED IN LOUISIANA BECAUSE THE EXTENT OF COLD WEATHER CONSTRUCTION OF HOT MIX ASPHALTIC CONCRETE PAVEMENT HAD SHOWN CONSIDERABLE INCREASE. RESULTS OF THE SURFACE COURSE INVESTIGATION SHOW A DEFINITE RELATIONSHIP BETWEEN AIRBASE TEMPERATURE AND PERCENTAGE OF COMPACTION. A CURVE IS PRESENTED WHICH REPRESENTS MARSHALL STABILITY-TEMPERATURE RELATIONSHIP AT THE END OF A 6-MONTH PERIOD. AN ADDITIONAL STUDY WAS CONDUCTED TO ESTABLISH AN APPROXIMATE RELATIONSHIP BETWEEN THE AIR AND BASE TEMPERATURES UNDER DIFFERENT WEATHER CONDITIONS. THIS STUDY INDICATED THAT: (1) THE AIR TEMPERATURE NEVER EXCEEDS THE BASE TEMPERATURE ALTHOUGH IN COLD AND CLOUDY WEATHER THE BASE TEMPERATURE IS ONLY SLIGHTLY HIGHER THAN AIR TEMPERATURE, (2) BASE TEMPERATURE OF ASPHALTIC CONCRETE PAVEMENT IS ALWAYS HIGHER THAN PORTLAND CEMENT CONCRETE PAVEMENT, AND (3) ON BRIGHT AND SUNNY DAYS THE SURFACE TEMPERATURE OF PORTLAND CEMENT CONCRETE PAVEMENT IS NORMALLY 15 TO 20 DEGREES HIGHER THAN THE AIR TEMPERATURE, AND ASPHALTIC CONCRETE WAS 25 TO 30 DEGREES HIGHER.

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  • Accession Number: 00211425
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Aug 25 1994 12:00AM