INTERPRETATIONS AND LIMITATIONS OF NUCLEAR MAGNETIC RESONANCE

A REVIEW IS PRESENTED OF STUDIES CONDUCTED USING NUCLEAR MAGNETIC RESONANCE FOR DETERMINING THE STATES OF BINDING OF THE WATER IN HYDRATED CEMENT PASTE. LIMITATIONS APPEAR TO BE THAT THERE IS NO TECHNIQUE YET FOR DETERMINING THE PRECISE STATES OF PHYSICAL AND CHEMICAL BINDING OF THE WATER IN HYDRATED CEMENT PASTE. THE PRECISION OF PROTON RESONANCE MEASUREMENTS APPEARS INSUFFICIENT BECAUSE OF THE EXTREME DIFFICULTY OF PRECISE INTERPRETATION OF NUCLEAR MAGNETIC RESONANCE PATTERNS. THE PROTON RESONANCE FREQUENCY DEPENDS ON THE DIFFERENCE IN ENERGY BETWEEN TWO PROTON STATES REPRESENTING TWO POSSIBLE ORIENTATIONS WITH RESPECT TO THE MAGNETIC FIELD. IF THE MAGNETIC FIELD WERE COMPLETELY HOMOGENOUS, THE RESONANCE PATTERN WOULD CONSIST OF ONLY ONE INFINITESIMALLY THIN LINE AT THE RESONANCE FREQUENCY GIVEN BY A PRESENTED FORMULA. THE EFFECT OF BINDING IS DISCUSSED. HOWEVER, IT IS CONCLUDED THAT NUCLEAR MAGNETIC RESONANCE CAN BE USED SUCCESSFULLY TO DETERMINE WATER ABSORPTION. A TECHNIQUE IS BEING INVESTIGATED TO STUDY DIELECTRIC CONSTANT AND DIELECTRIC LOSS FACTOR MEASUREMENTS AS A FUNCTION OF FREQUENCY.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/hrbbulletin/287/287-007.pdf
• Supplemental Notes:
  • No 287, pp 64-66, 5 REF. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Authors:
  • Seligmann, Paul
• Conference:
  • 40th Annual Meeting of the Highway Research Board
  • Location: Washington DC, United States
  • Date: 1961-1-9 to 1961-1-13
• Publication Date: 1961

Media Info

• Media Type: Digital/other
• Pagination: 3p
• Monograph Title: Discussions on Water and Its Conduction in Soils
• Serial:
  • Highway Research Board Bulletin
  • Issue Number: 287
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Absorption; Binders; Cement; Dielectric properties; Electromagnetic fields; Hydrates; Nuclear magnetic resonance; Pastes; Reviews; Water
• Old TRIS Terms: Binding
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00216687
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Sep 16 1994 12:00AM