A SIMULATED APPLICATION OF STATISTICAL QUALITY ACCEPTANCE SPECIFICATIONS FOR BITUMINOUS PAVEMENTS

IN 1964 THE STATE OF MAINE BEGAN DEVELOPING A SET OF STATISTICAL ACCEPTANCE SPECIFICATIONS. THESE WERE SUBSEQUENTLY APPLIED TO A 10,000-TON PROJECT UNDER SIMULATED CONDITIONS. DURING 1969 AND 1970 THE SPECIFICATIONS WERE APPLIED, UNDER SIMULATED CONDITIONS, TO A 100,000-TON PROJECT UTILIZING A HIGHER PRODUCTION PLANT. CONTROL TESTS WERE PERFORMED BY STATE PERSONNEL USING NORMAL TESTING PROCEDURES. ANOTHER PERSON, USING A SEPARATE SET OF EQUIPMENT OF THE SAME TYPE, CONDUCTED STATISTICAL ACCEPTANCE TESTING. FOR 10 DAYS AN R&D TEAM FROM FHWA REGION 15 RAN ITS OWN SERIES OF TESTS EMPLOYING THE STATISTICAL CONCEPT AS WELL AS CONTROL EQUIPMENT. DIFFERENCES BETWEEN THE STATE AND FHWA SAMPLING METHODS---PARTICULARLY WITH RESPECT TO DENSITY---ARE DESCRIBED. THE RESULTS INDICATED THAT A PROJECT CAN BE SUCCESSFULLY TESTED AND EVALUATED BY STATISTICAL METHODS & SPECIFICATIONS. VARIANCES BETWEEN THE TESTING PARTIES WERE VERY SMALL. SINCE THE MEAN OF FIVE TESTS ON EACH SIEVE SIZE IS USED FOR EVALUATION, A JOB MIX MUST BE VERY ACCURATELY ESTABLISHED; FAILURE TO DO SO WILL PROBABLY PRODUCE A MIXTURE OUTSIDE THE TOLERANCES OF THE SPECIFICATION. NUCLEAR DENSITY DETERMINATION AND ELECTRONIC TEMPERATURE MEASUREMENT PROVED SUCCESSFUL. THE THICKNESS CONTROL STIPULATED IN THE STATISTICAL SPECIFICATIONS PROVED SATISFACTORY. IT IS RECOMMENDED THAT CERTAIN PRICE ADJUSTMENTS BE MADE ON THE BASIS OF THE RESULTS AND THAT CERTAIN BONUS FEATURES OF THE SPECIFICATION BE RETAINED.

  • Supplemental Notes:
    • APP TECH PAP 71-6P
  • Corporate Authors:

    Maine Department of Transportation

    Child House, 16 State House Station
    Augusta, ME  USA  04333-0016
  • Authors:
    • Day, P B
    • Rand, D W
  • Publication Date: 1971-6

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 84 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00211760
  • Record Type: Publication
  • Files: TRIS, STATEDOT
  • Created Date: Feb 3 1973 12:00AM