PRECISION OF THE MAXIMUM-DENSITY ESTIMATE IN CONTROL-STRIP SPECIFICATIONS

One method of controlling embankment densification refers to the maximum density observed in a local control strip. The local maximum is the standard against which all mainline densities are compared, yet research to date has not addressed the precision of what is truly an estimated maximum density. The precision of the maximum-density estimate is quantified by simulating typical rolling procedures and density-growth curves with pertinent parameters, such as the decision rule and sample size, controlled in a factorial design. Analysis of the simulation results leads to the following general findings: (a) The sampling plan with the same locations and correlated comparisons is the most efficient of the four plans investigated, and (b) by employing this plan, the true relative density will be greater than 90 percent about 95 percent of the time. (Author)

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/trr/1983/924/924-012.pdf
• Summary URL:
  • https://scholar.google.com/scholar_lookup?title=PRECISION+OF+THE+MAXIMUM-DENSITY+ESTIMATE+IN+CONTROL-STRIP+SPECIFICATIONS&author=R.+Barros&publication_year=1983
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• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Quality Assurance and Acceptance Procedures. 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:
  • Barros, Ricardo T
• Publication Date: 1983

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 76-85
• Monograph Title: Concrete overlays and inlays, effects of high temperature on concrete, and statistical techniques in construction
• Serial:
  • Transportation Research Record
  • Issue Number: 924
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Accuracy; Densification; Density; Embankments; Estimating; Grading; Measurement; Specifications; Statistical sampling
• Uncontrolled Terms: Sample size
• Old TRIS Terms: Control sampling; Maximum density /gradation/
• Subject Areas: Construction; Data and Information Technology; Geotechnology; Highways; I52: Construction of Pavements and Surfacings;

Filing Info

• Accession Number: 00385241
• Record Type: Publication
• ISBN: 0309036135
• Files: TRIS, TRB
• Created Date: May 30 1984 12:00AM