RADIOISOTOPE GAUGE FOR DETERMINING CEMENT CONTENT OF CONCRETE

This invention pertains to a non-destructive testing technique for determining the amount of a constituent of interest in a mixture. The technique employs a probe which contains a single source of radiation and a detector for radiation backscattered from the test mixture. The probe is movable, in stepwise fashion, inside a tubular spacer mounted in and coaxial of a sample holder. The invention also contemplates the use of a standard having constant radiation absorption characteristics; backscattered radiation from the test mixture and standard being compared to provide information commensurate with the amount of the constituent.

  • Supplemental Notes:
    • Supersedes PB-231 501. Government-owned invention available for licensing. Copy of patent available Commissioner of Patents, Washington, D.C. 20231 $0.50.
  • Corporate Authors:

    Department of Transportation

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Mitchell, T M
  • Publication Date: 0

Media Info

  • Pagination: 6 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00094786
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: PAT-APPL-462618 Patent
  • Files: TRIS, USDOT
  • Created Date: May 14 1976 12:00AM