Detailed instructions are presented for the operation, calibration, and maintenance of a prototype nuclear (gamma ray backscatter) gage for continuously monitoring the density of portland cement concrete pavement during construction. The prototype gage was developed during the research study reported on in Federal Highway Administration Report No. FHWA-RD-78-27, "Development of a Device for Continuous Automatic Monitoring of Consolidation of Fresh Concrete." The manual includes: procedures for installing, calibrating, and operating the device and for performing basic maintenance and trouble-shooting; circuit diagrams and descriptions; a radiation safety discussion; specifications; and a description of the principles of operation. /FHWA/

  • Supplemental Notes:
    • Sponsored by the Federal Highway Adminsitration, Offices of Research and Development.
  • Corporate Authors:

    Rexnord Incorporated

    Corporate Research & Development Group, 5101 West Beloit Rd
    Milwaukee, WI  United States  53214
  • Authors:
    • Lee, P L
    • Eggert, G J
  • Publication Date: 1978-5

Media Info

  • Pagination: 103 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00188514
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: FHWA-RD-78- 96 Manual, FCP 34F3-222
  • Contract Numbers: DOT-FH-11-8588
  • Files: TRIS, USDOT
  • Created Date: Mar 14 1979 12:00AM