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DEVELOPMENT AND TRIAL USE OF ACCEPTANCE SAMPLING PLANS FOR COMPACTED EMBANKMENTS

THE PURPOSE WAS TO DEVELOP AND PUT IN TRIAL USE STATISTICALLY BASED ACCEPTANCE SAMPLING PLANS FOR COMPACTED EMBANKMENTS BASED ON THE EXISTING VARIABILITY IN ACCEPTABLE CONTRUCTION. THE FIRST PHASE OF THS RESEARCH INDICATED THAT THE TRIAL SPECIFICATIONS SHOULD HAVE THE FOLLOWING CHARACTERISTICS: (1) DECISIONS SHOULD BE BASED ON THE AVERAGE OF A NUMBER OF IN-PLACE DENSITY TESTS; (2) SAMPLE LOCATIONS SHOULD BE DETERMINED BY RANDOM NUMBERS; (3) SPECIFICATIONS SHOULD PROVIDE AN INCENTIVE FOR THE CONTRACTOR TO PRODUCE UNIFORM COMPACTION; AND (4) SPECIFICATIONS SHOULD CALL FOR THE SAME AVERAGE DEGREE OF COMPACTION AS IS ACCEPTED UNDER THE CURRENT SPECIFICATIONS. SPECIFICATIONS INCORPORATING THESE CHARACTERISTICS WERE DEVELOPED AND USED ALONG WITH CURRENT HIGHWAY DEPARTMENT SPECIFICATIONS ON 3 CONSTRUCTION PROJECTS. THE LOT ACCEPTANCE PLAN USED A SAMPLE SIZE OF 3 TO 5 TESTS. A NUCLEAR MOISTURE-DENSITY INSTRUMENT WAS USED AND RESULTED IN A TESTING AND CALCULATION TIME OF FROM 40 TO 90 MIN PER LOT. A COMPARISON OF THE CURRENT SPECIFICATIONS THAT ARE BASED ON REPRESENTATIVE SAMPLING WITH A SPECIFIED MINIMUM DENSITY INDICATED THAT (1) THE AVERAGE LOT TEST RESUTLS FOR THE REPRESENTATIVE SAMPLING DEVIATED FROM THE RANDOM TEST RESULTS DEPENDING ON THE JUDGEMENT OF THE INSPECTOR, (2) OF THE 60 LOTS ACCEPTED UNDER THE CURRENT SPECIFICATIONS, 2 LOTS WOULD HAVE BEEN REJECTED UNDER THE TRIAL SPECIFICATIONS, AND (3) 9 OF THE 67 LOTS ACCEPTED BY THRE TRIAL SPECIFICATIONS HAD ONE OR MORE TESTS BELOW THE CURRENT SPECIFICATION LIMITS, INDICATING THAT THEY COULD HAVE BEEN REJECTED BY THE CURRENT SPECIFICATIONS. /AUTHOR/

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  • Supplemental Notes:
    • Sponsored by Committee on Quality Assurance and Acceptance Procedures and presented at the 50th Annual Meeting. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
  • Authors:
    • Jorgenson, James L
  • Conference:
  • Publication Date: 1971

Media Info

  • Media Type: Digital/other
  • Features: Figures; References; Tables;
  • Pagination: pp 24-34
  • Monograph Title: Quality assurance, concrete, construction, bridge deck coating, and joint seals
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00215456
  • Record Type: Publication
  • ISBN: 0309019702
  • Files: TRIS, TRB
  • Created Date: Mar 7 1972 12:00AM