LOUISIANA'S EXPERIENCE WITH END RESULT SPECIFICATIONS FOR CONSTRUCTION OF ASPHALTIC CONCRETE

HISTORICAL DATA AND VERY LARGE NUMBERS OF TEST RESULTS HAVE BEEN USED IN THE DEVELOPMENT OF END SPECIFICATIONS. THREE DECISIONS THAT HAVE TO BE MADE BEFORE WORK CAN BEGIN ARE REVIEWED. THE BACKBONE OF THE SPECIFICATIONS IS THE FACT THAT THE CONTROLS ARE DONE BY THE MANUFACTURER OR THE CONTRACTOR. THE METHOD OF ACCEPTANCE HAS TO BE ESTABLISHED AND INCLUDED. A DECISION HAS TO BE MADE ON WHAT IS TO BE CONSIDERED "QUALITY". A PAY SCHEDULE WHERE PAYMENT TO THE CONTRACTOR IS BASED ON ADJUSTMENT IN UNIT PRICE COMMENSURATE WITH THE QUALITY FURNISHED MUST NEXT BE DEVELOPED. FIGURES ILLUSTRATE A CONTROL CHART. IN A CONSIDERATION OF THE BASIS OF PAYMENT, ACCEPTANCE ON A LOT BASIS (A "NORMAL DAYS PRODUCTION OR A FRACTION THEREOF") IS RECOMMENDED. ACCEPTANCE IS BASED ON THE TEST RESULTS OF THE STABILITY, ROADWAY DENSITY, AND THE SURFACE SMOOTHNESS. THE PAYMENT SCALE FOR A SURFACE COURSE MIX IS PRESENTED. THE SCALE FOR MARSHALL STABILITY, THE ROADWAY DENSITY REQUIREMENTS, PAYMENT SCALE FOR SURFACE SMOOTHNESS, AND THE REQUIREMENTS FOR ASPHALT CEMENT ARE TABULATED. USEFUL INFORMATION GAINED IN VARIOUS PROJECTS IS PRESENTED. THE PROBLEM OF CERTIFICATION (WHICH REQUIRES TRAINING MATERIALS, MANUALS, AND ADOPTION OF CERTIFICATION POLICIES) IS DISCUSSED. THE ADOPTION OF END RESULT SPECIFICATIONS IS RECOMMENDED PROVIDED THEY CAN BE FULLY IMPLEMENTED. CAUTION IS URGED AGAINST UNREASONABLE REQUIREMENTS.

Media Info

  • Features: Figures;
  • Pagination: p. 7-11
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00211791
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 18 1973 12:00AM