Quality control analysis : part III : concrete and concrete aggregates.

Details

• Alternative Title:
  Quality control analysis : part III : concrete & concrete aggregates : Louisiana highway research.
• Creators:
  Shah, S. C.
• Corporate Creators:
  Louisiana. Department of Highways. Research and Development Section
• Corporate Contributors:
  United States. Bureau of Public Roads
• Subject/TRT Terms:
  • Quality control
  • Concrete
  • Concrete aggregates
  • Evaluation
  • Frequency distributions
  • Coarse aggregates
  • Thickness
  • Portland cement concrete
  • Variability
  • stockpile component
• Publication/ Report Number:
  Research Report No. 24
• Resource Type:
  Tech Report
• Geographical Coverage:
  Louisiana
• Corporate Publisher:
  Louisiana. Department of Highways. Research and Development Section
• Abstract:
  This is the third and last report on the Quality Control Analysis of highway construction materials. ; It deals with the statistical evaluation of data from several construction projects to determine the basic pattern of variability with respect to slump of concrete and concrete aggregates. ; The analysis indicated 1) that the frequency distribution of most of the data tend to follow normal distribution; 2) that, in general there is considerable variation in concrete projection from batch to batch; 3) that for fine aggregate, the stockpile component of variance (as determined by ANOVA) contributes more to the overall variance than samples within stockpile component; 4) that in the case of coarse aggregates, the samples within stockpile component show larger of variance than between stockpile component; 5) furthermore, that there is pronounced variation in pavement thickness from contractor to contractor. ; The analysis of data on asphaltic concrete characteristics indicated 1) that there is considerable variation in pavement density from contractor to contractor; 2) that by far the largest source of variation in discharge temperature is indicated by process component. ; The study has also revealed how control charts can be used for control and acceptance of Portland cement concrete production.
• Format:
  PDF
• Funding:
  Research Project No. 63-1G, Louisiana HPR 1(4)
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/22072/dot_22072_DS1.pdf
• File Type:
  [PDF - 2.02 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:885166b4b76d86d3e1bb1a08a418b248dcc2013cb26c1bcd8411d33e683e9dbb364c05cb291d9c2256f08c6c6ac2833d260e908ac52dc1c0571e4949630af473