NUCLEAR CEMENT CONTENT GAGE COMPARISON ANALYSIS

The study is concerned with the laboratory evaluation of two prototypes of a nuclear gage for measuring the cement content of plastic concrete. The dependence of the gages' responses on aggregate type and proportions, cement content, and temperature were studied. Analysis of variance and other statistical procedures showed that: (1) the sensitivity and accuracy of the gages is greatly affected by the type of aggregate; (2) the accuracy of the gages for siliceous aggregate mixes was better than twice that for calcareous aggregates mixes; (3) separate calibration curves will have to be generated whenever changes in proportion of chemically-different coarse to fine aggregate occur and, unless suitable electronic compensation can be introduced into future instruments, whenever temperature variations are encountered. /FHWA/

  • Supplemental Notes:
    • Conducted in cooperation with DOT, Federal Highway Administration.
  • Corporate Authors:

    Louisiana Department of Transportation and Development

    1201 Capitol Access Road, P.O. Box 94245
    Baton Rouge, LA  United States  70804-9245
  • Authors:
    • Shah, S C
  • Publication Date: 1977-8

Media Info

  • Pagination: 61 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00179864
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: FHWA-TS-78-201 Final Rpt.
  • Contract Numbers: DOT-FH-11-8852
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Oct 12 1978 12:00AM