DETERMINATION OF MOISTURE LEVELS IN STRUCTURAL CONCRETE USING PULSED NMR

An investigation has been conducted of nuclear magnetic resonance (NMR) as the basis for nondestructively measuring moisture content in concrete. Results of a laboratory feasibility study conducted on a variety of concrete cylinders showed the NMR signatures to correlate well with evaporable moisture independently of cement type, water/cement ratio or chloride content; however, magnetic minerals contained in certain aggregates affected the correlation. On the basis of the feasibility study, an NMR Moisture Measurement system for nondestructively measuring moisture from one surface of reinforced bridge decks was designed and fabricated.

• Supplemental Notes:
  • Prepared in cooperation with Portland Cement Association, Skokie, IL.
• Corporate Authors:

  Southwest Research Institute

  6220 Culebra Road, P.O. Drawer 28510
  San Antonio, TX  United States  78228-0510

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Matzkanin, G A
  • DeLosSantos, A
  • Whiting, D A
• Publication Date: 1982-4

Media Info

• Pagination: 98 p.

Subject/Index Terms

• TRT Terms: Bridge decks; Concrete; Field tests; Moisture content; Nondestructive tests; Nuclear magnetic resonance; Reinforced concrete
• Subject Areas: Bridges and other structures; Materials;

Filing Info

• Accession Number: 00365369
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: FHWA/RD-82-008
• Contract Numbers: DOT-FH-11-9487
• Files: NTIS, USDOT
• Created Date: Sep 30 2003 12:00AM