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A nuclear magnetic resonance pulsed field gradient study of self-diffusion of water in hydrated cement pastes

Rodin, VV, McDonald, PJ and Zamani, Z (2013) A nuclear magnetic resonance pulsed field gradient study of self-diffusion of water in hydrated cement pastes Diffusion Fundamentals, 18 (3). pp. 1-7.

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Abstract

The results of one- and two-dimensional 1H nuclear magnetic resonance (NMR) pulsed field gradient (PFG) diffusometry studies of water in white cement paste with a water-to-cement ratio 0.4 and aged from 1 day to 1 year are reported. The study shows that the NMR PFG method is primarily sensitive to the capillary porosity. Data is fit on the basis of a lognormal pore size distribution with pore size dependent relaxation times. The volume mean capillary pore size is 4.2 μm in mature paste, similar to 1 week suggesting that hydrates and gel porosity do not form in the capillary porosity once the latter has been substantially created. No evidence is found of capillary pore anisotropy in cement paste.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
AuthorsEmailORCID
Rodin, VVUNSPECIFIEDUNSPECIFIED
McDonald, PJUNSPECIFIEDUNSPECIFIED
Zamani, ZUNSPECIFIEDUNSPECIFIED
Date : 1 June 2013
Contributors :
ContributionNameEmailORCID
EditorKärger, JUNSPECIFIEDUNSPECIFIED
EditorHeitjans, PUNSPECIFIEDUNSPECIFIED
Uncontrolled Keywords : Cement, Diffusion, Porosity, NMR, PFG
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 16 Aug 2013 08:29
Last Modified : 23 Sep 2013 20:10
URI: http://epubs.surrey.ac.uk/id/eprint/782700

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