PMID: 8970082Jan 1, 1996Paper

Pore structure of hydrating cement paste by magnetic resonance relaxation analysis and freezing

Magnetic Resonance Imaging
J Y JehngW P Halperin

Abstract

Nuclear magnetic resonance relaxation analysis has been applied to interpret the evolution of microstructure in a cement paste during hydration. A basic understanding of the wet-dry and freeze-thaw processes of cement pastes has been developed. The pore structure evolution has been studied by the suppression of the freezing temperature of water and compared with spin-spin relaxation analysis performed at room temperature. Both methods consistently show that hydrating cement pastes have two principal components in their size distribution. The NMR relaxation times provide a measure of the characteristic pore sizes. Their interpretation is made in the context of a fast exchange model. Supercooling and thawing point depression of confined water has been studied systematically. The depression of the freezing point of liquid water confined within a pore was found to be dependent on the pore size, with capillary pore water freezing at 240 K and the remaining gel pore water freezing over a temperature range extending to as low as 160 K.A modified Gibbs-Thompson analysis was used to determine pore volume distributions from the distribution of thawing temperatures.

References

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Citations

Dec 24, 2013·Progress in Nuclear Magnetic Resonance Spectroscopy·J MitchellE J Fordham
Nov 6, 1998·Magnetic Resonance Imaging·F MiliaA Leventis
Nov 6, 1998·Magnetic Resonance Imaging·P Coussot
Nov 6, 1998·Magnetic Resonance Imaging·A J BohrisB Le Page
Feb 24, 1998·Solid State Nuclear Magnetic Resonance·P J PradoT W Bremner
Mar 25, 2014·Langmuir : the ACS Journal of Surfaces and Colloids·Emilia V SillettaGustavo A Monti
Sep 29, 2004·Journal of Colloid and Interface Science·T A AlexeevaS V Mikhalovsky
Dec 15, 2010·Journal of Magnetic Resonance·G H A van der HeijdenK Kopinga
Oct 11, 2005·Advances in Colloid and Interface Science·V M Gun'koA A Chuiko
Oct 17, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·David FauxPeter McDonald
Jun 20, 2020·Biophysics Reviews·Victor V Rodin
Nov 21, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·George DiamantopoulosJamal Hassan
Jan 22, 2021·International Journal of Biological Macromolecules·Long ChenZhengyu Jin
Dec 31, 2005·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·A PlassaisB Bresson
Mar 22, 2021·Journal of Magnetic Resonance·Razieh EnjilelaBruce Balcom
Nov 6, 1998·Magnetic Resonance Imaging·P J PradoP E Grattan-Bellew
Apr 8, 2006·The Journal of Physical Chemistry. B·Hamouda JaffelJean-Pierre Guicquero

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