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Article

C-S-H Pore Size Characterization Via a Combined Nuclear Magnetic Resonance (NMR)–Scanning Electron Microscopy (SEM) Surface Relaxivity Calibration

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GeoZentrum Nordbayern, Mineralogy, University of Erlangen-Nuernberg (FAU), Schlossgarten 5a, 91054 Erlangen, Germany
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F. A. Finger-Institute for Building Materials Science, Bauhaus-University Weimar, Coudraystraße 11A, 99423 Weimar, Germany
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Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA, UK
*
Author to whom correspondence should be addressed.
Materials 2020, 13(7), 1779; https://doi.org/10.3390/ma13071779
Received: 6 March 2020 / Revised: 2 April 2020 / Accepted: 7 April 2020 / Published: 10 April 2020
(This article belongs to the Section Construction and Building Materials)
A new method for the nuclear magnetic resonance (NMR) surface relaxivity calibration in hydrated cement samples is proposed. This method relies on a combined analysis of 28-d hydrated tricalcium silicate samples by scanning electron microscopy (SEM) image analysis and 1H-time-domain (TD)-NMR relaxometry. Pore surface and volume data for interhydrate pores are obtained from high resolution SEM images on surfaces obtained by argon broad ion beam sectioning. These data are combined with T2 relaxation times from 1H-TD-NMR to calculate the systems surface relaxivity according to the fast exchange model of relaxation. This new method is compared to an alternative method that employs sequential drying to calibrate the systems surface relaxivity. View Full-Text
Keywords: nuclear magnetic resonance (NMR); scanning electron microscopy (SEM); pore size distribution; calcium silicate hydrate; tricalcium silicate nuclear magnetic resonance (NMR); scanning electron microscopy (SEM); pore size distribution; calcium silicate hydrate; tricalcium silicate
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MDPI and ACS Style

Naber, C.; Kleiner, F.; Becker, F.; Nguyen-Tuan, L.; Rößler, C.; Etzold, M.A.; Neubauer, J. C-S-H Pore Size Characterization Via a Combined Nuclear Magnetic Resonance (NMR)–Scanning Electron Microscopy (SEM) Surface Relaxivity Calibration. Materials 2020, 13, 1779. https://doi.org/10.3390/ma13071779

AMA Style

Naber C, Kleiner F, Becker F, Nguyen-Tuan L, Rößler C, Etzold MA, Neubauer J. C-S-H Pore Size Characterization Via a Combined Nuclear Magnetic Resonance (NMR)–Scanning Electron Microscopy (SEM) Surface Relaxivity Calibration. Materials. 2020; 13(7):1779. https://doi.org/10.3390/ma13071779

Chicago/Turabian Style

Naber, Christoph, Florian Kleiner, Franz Becker, Long Nguyen-Tuan, Christiane Rößler, Merlin A. Etzold, and Jürgen Neubauer. 2020. "C-S-H Pore Size Characterization Via a Combined Nuclear Magnetic Resonance (NMR)–Scanning Electron Microscopy (SEM) Surface Relaxivity Calibration" Materials 13, no. 7: 1779. https://doi.org/10.3390/ma13071779

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