LABORATORY AND FIELD DENSITIES OF HOT-MIX ASPHALTIC CONCRETE IN TEXAS

LABORATORY AND FIELD DATA HAVE BEEN COLLECTED FROM TWELVE REGULAR CONTRACT HOT-MIX ASPHALTIC CONCRETE PAVING PROJECTS IN VARIOUS AREAS OF TEXAS FOR THE PURPOSE OF COMPARING LABORATORY AND FIELD DENSITIES. DATA FROM ROAD SAMPLES TAKEN FROM TWO TO NINE MONTHS AFTER THE ROADS WERE BUILT SHOW THAT FIVE OF THE PAVEMENTS EXCEEDED LABORATORY DENSITY BY 1 TO 3 PERCENT AS DETERMINED BY CALCULATION METHODS CURRENTLY USED BY THE TEXAS HIGHWAY DEPARTMENT. NONE OF THE ROAD SAMPLES MEASURED BY THIS METHOD HAD A DENSITY LOWER THAN 97.2 PERCENT (2.8 PERCENT VOIDS). THE AVERAGE DENSITY OF THE TWELVE DIFFERENT SAMPLES WAS 100.0 PERCENT. THE MAXIMUM DENSITY MEASURED 103+ PERCENT. THE SPECIFIC GRAVITIES OF THE MIXES WERE THEN REDETERMINED SO AS TO INCLUDE MOST OF THE ABSORPTION OF ASPHALT CEMENT BY THE AGGREGATE. THESE DATA SHOW AN AVERAGE OF 94.6 PERCENT, WITH A MAXIMUM OF 97.3 PERCENT. THE RANGE OF DIFFERENCES BROUGHT OUT BY THE TWO METHODS WAS FROM 1.9 TO 12.7 PERCENT. DATA ON MIX DESIGN, TRAFFIC AND FIELD CONSTRUCTION ARE INCLUDED FOR BACKGROUND INFORMATION. /AUTHOR/

Media Info

  • Monograph Title: Asphaltic concrete construction - field and laboratory studies
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00211321
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Aug 28 1994 12:00AM