END-RESULT SPECS GET CAUTIOUS OK ON EXPERIMENTAL ASPHALT JOB

ACCEPTANCE OF ASPHALT PAVEMENT HAS BEEN STRICTLY ON THE BASIS OF END RESULTS ON A RECENT OVERLAY PROJECT IN ILLINOIS. THE EXPERIMENTAL SPECIFICATIONS AND JOB CONTROL PROCEDURES HAVE GIVEN THE CONTRACTORS VIRTUALLY A FREE HAND IN ESTABLISHING JOB MIXES, SCHEDULING HOTMIX PRODUCTION, AND IN DECIDING ON EQUIPMENT AND CONSTRUCTION METHODS. STATE INSPECTORS HAVE SAMPLED AND TESTED ONLY THE MATERIAL IN PLACE ON THE ROADWAY, OFFICIALLY IGNORING PRODUCTION PROCEDURES. ACCEPTANCE WAS BASED ON ASPHALT CONTENT AND AGGREGATE GRADATION IN THE MIX ON THE ROADWAY, DENSITY, PAVEMENT THICKNESS AND SURFACE SMOOTHNESS. IN ADDITION TO UPPER AND LOWER LIMITS, UNIFORMITY WAS A BIG FACTOR IN ACCEPTANCE. THE END-RESULT TESTING DID PERMIT SOME INCREASE IN PRODUCTION.

• Publication Date: 1970-12

Media Info

• Features: Photos; Tables;
• Pagination: p. 61-2
• Serial:
  • Roads and Streets
  • Volume: 113
  • Issue Number: 12
  • Publisher: Donnelley (Reuben H) Corporation

Subject/Index Terms

• TRT Terms: Acceptance; Asphalt; Asphalt pavements; Construction; Construction management; Production methods; Specifications
• Uncontrolled Terms: Construction specifications
• Old TRIS Terms: Asphalt pavement specifications
• Subject Areas: Construction; Highways;

Filing Info

• Accession Number: 00215515
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 28 1972 12:00AM