ACTUAL APPLICATION OF END RESULT SPECIFICATIONS AND THE ROLE OF COMMERCIAL TESTING LABORATORIES IN APPLYING THEM

This report explains what an end result specification may consist of; how it can be applied; and what role commercial testing laboratories can play in applying it. The end result specification as applied on aspahltic concrete mixtures in Louisiana is outlined, and the duties and reponsibilities of technicians is discussed. Sixteen projects were evaluated in the study of the effects of end result specifications. It was found that the standard deviation for the percentage of pay per project as based on 100 percent of contract unit price was 1.99 percent at a 95 percent confidence level. This indicates the contractor should receive at least 95 percent pay at least 95 percent of the time. The total tons of mix evaluated was 544,348 of which 7,223 tons of mix or 1.3 percent resulted in the contract unit price. Approximately 30,211 tons of mix or 5.5 percent resulted in the contractor receiving 95 percent of the contract unit price. There were no penalties at 50 percent or remove. There was total of 724 lots involved in all of the projects, of which 64 lots resulted in penalties. Approximately 93.7 percent of the failing lots were due to deficiencies in roadway density and only 6.3 percent due to deficiencies in Marshall Stability. End result specifications appear to be a satisfactory and workable means of defining the responsibilities of all the persons involved, as well as, ensuring a quality end product on asphaltic concrete projects.

  • Supplemental Notes:
    • Proceedings of the meeting held in Houston, Texas, February 1973.
  • Corporate Authors:

    University of Minnesota, Minneapolis

    155 Experimental Engineering Building
    Minneapolis, MN  USA  55455
  • Authors:
    • Arena Jr, P H
  • Conference:
  • Publication Date: 1973

Media Info

  • Features: Appendices; Figures; Tables;
  • Pagination: p. 482-498
  • Serial:
    • Volume: 42

Subject/Index Terms

Filing Info

  • Accession Number: 00127337
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 16 1975 12:00AM