A broad line NMR and MRI study of water and water transport in portland cement pastes

A. J. Bohris, U. Goerke, P. J. McDonald, M. Mulheron, B. Newling, B. Le Page

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Abstract

The results of a magnetic resonance spin-spin relaxation analysis and broad-line magnetic resonance imaging (MRI) (gradient-echo and stray-field imaging) study of water and water transport in Portland cement pastes are presented. The effect of varying the cure conditions and the water to cement (w/c) ratio of the sample mix are discussed. The water sorptivity and the concentration dependence of the hydraulic diffusion coefficient are calculated for samples prepared with a 0.5 w/c ratio and, therefore, an open pore structure. In the case of 0.3 w/c ratio samples, little water transport is observed, and a closed pore structure is inferred.

Original languageEnglish (US)
Pages (from-to)455-461
Number of pages7
JournalMagnetic Resonance Imaging
Volume16
Issue number5-6
DOIs
StatePublished - Jun 1998

Bibliographical note

Funding Information:
The authors thank the UK Science and Engineering Research Council for Research Grant GR/K94881. A.J.B. also thanks the council for a studentship.

Keywords

  • Cement
  • Diffusion
  • Magnetic resonance imaging
  • Relaxation
  • Stray field imaging (STRAFI)
  • Water

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