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

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 (1)H-time-domain (TD)-NMR relax...

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Autores principales: Naber, Christoph, Kleiner, Florian, Becker, Franz, Nguyen-Tuan, Long, Rößler, Christiane, Etzold, Merlin A., Neubauer, Jürgen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7179032/
https://www.ncbi.nlm.nih.gov/pubmed/32290068
http://dx.doi.org/10.3390/ma13071779
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author Naber, Christoph
Kleiner, Florian
Becker, Franz
Nguyen-Tuan, Long
Rößler, Christiane
Etzold, Merlin A.
Neubauer, Jürgen
author_facet Naber, Christoph
Kleiner, Florian
Becker, Franz
Nguyen-Tuan, Long
Rößler, Christiane
Etzold, Merlin A.
Neubauer, Jürgen
author_sort Naber, Christoph
collection PubMed
description 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 (1)H-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 T(2) relaxation times from (1)H-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.
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spelling pubmed-71790322020-04-28 C-S-H Pore Size Characterization Via a Combined Nuclear Magnetic Resonance (NMR)–Scanning Electron Microscopy (SEM) Surface Relaxivity Calibration Naber, Christoph Kleiner, Florian Becker, Franz Nguyen-Tuan, Long Rößler, Christiane Etzold, Merlin A. Neubauer, Jürgen Materials (Basel) Article 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 (1)H-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 T(2) relaxation times from (1)H-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. MDPI 2020-04-10 /pmc/articles/PMC7179032/ /pubmed/32290068 http://dx.doi.org/10.3390/ma13071779 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Naber, Christoph
Kleiner, Florian
Becker, Franz
Nguyen-Tuan, Long
Rößler, Christiane
Etzold, Merlin A.
Neubauer, Jürgen
C-S-H Pore Size Characterization Via a Combined Nuclear Magnetic Resonance (NMR)–Scanning Electron Microscopy (SEM) Surface Relaxivity Calibration
title C-S-H Pore Size Characterization Via a Combined Nuclear Magnetic Resonance (NMR)–Scanning Electron Microscopy (SEM) Surface Relaxivity Calibration
title_full C-S-H Pore Size Characterization Via a Combined Nuclear Magnetic Resonance (NMR)–Scanning Electron Microscopy (SEM) Surface Relaxivity Calibration
title_fullStr C-S-H Pore Size Characterization Via a Combined Nuclear Magnetic Resonance (NMR)–Scanning Electron Microscopy (SEM) Surface Relaxivity Calibration
title_full_unstemmed C-S-H Pore Size Characterization Via a Combined Nuclear Magnetic Resonance (NMR)–Scanning Electron Microscopy (SEM) Surface Relaxivity Calibration
title_short C-S-H Pore Size Characterization Via a Combined Nuclear Magnetic Resonance (NMR)–Scanning Electron Microscopy (SEM) Surface Relaxivity Calibration
title_sort c-s-h pore size characterization via a combined nuclear magnetic resonance (nmr)–scanning electron microscopy (sem) surface relaxivity calibration
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7179032/
https://www.ncbi.nlm.nih.gov/pubmed/32290068
http://dx.doi.org/10.3390/ma13071779
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