Pore network of cement hydrates in a High ...
Type de document :
Article dans une revue scientifique
URL permanente :
Titre :
Pore network of cement hydrates in a High Performance Concrete by 3D FIB/SEM — Implications for macroscopic fluid transport
Auteur(s) :
Song, Yang [Auteur]
DAVY, Catherine [Auteur]
Laboratoire de mécanique et matériaux du génie civil [L2MGC]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Troadec, david [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Bourbon, Xavier [Auteur]
DAVY, Catherine [Auteur]
![refId](/themes/Mirage2//images/idref.png)
Laboratoire de mécanique et matériaux du génie civil [L2MGC]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Troadec, david [Auteur]
![refId](/themes/Mirage2//images/idref.png)
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Bourbon, Xavier [Auteur]
Titre de la revue :
Cement and Concrete Research
Numéro :
115
Pagination :
308-326
Éditeur :
Elsevier
Date de publication :
2019-01
Mot(s)-clé(s) en anglais :
Focused Ion Beam/Scanning Electron Microscopy (FIB/SEM)
High Performance Concrete (HPC)
Portland cement
Mature paste
Pore structure
Permeability
High Performance Concrete (HPC)
Portland cement
Mature paste
Pore structure
Permeability
Discipline(s) HAL :
Chimie/Matériaux
Résumé en anglais : [en]
The pore structure of a mature industrial High Performance Concrete (HPC) is characterized at the scale of its cement hydrates with 3D Focused Ion Beam/Scanning Electron Microscopy (FIB/SEM). The considered scale is a ...
Lire la suite >The pore structure of a mature industrial High Performance Concrete (HPC) is characterized at the scale of its cement hydrates with 3D Focused Ion Beam/Scanning Electron Microscopy (FIB/SEM). The considered scale is a mesoscale, with sample volumes of 61–118 μm3, and voxel sizes of 5.9 × 7.5 × 10 nm3 (or 5.9 × 7.5 × 20 nm3). Four independent samples are imaged deliberately in the cement hydrates for minimal evaluation of pore structure fluctuations. The investigated pore sizes range between 10 and 600 nm. Katz-Thompson model derived from percolation theory, coupled to pore structure data from FIB/SEM, predict fluid transport properties in the Darcy's sense. Upscaled predictions at the mesoscale of the cement hydrates are on the same order of magnitude as experimental permeability at the pluri-centimetric scale (i.e. a macroscale for the HPC). This means that the pore network of the cement hydrates, imaged by FIB/SEM, has a relevant contribution to fluid transport through the HPC.Lire moins >
Lire la suite >The pore structure of a mature industrial High Performance Concrete (HPC) is characterized at the scale of its cement hydrates with 3D Focused Ion Beam/Scanning Electron Microscopy (FIB/SEM). The considered scale is a mesoscale, with sample volumes of 61–118 μm3, and voxel sizes of 5.9 × 7.5 × 10 nm3 (or 5.9 × 7.5 × 20 nm3). Four independent samples are imaged deliberately in the cement hydrates for minimal evaluation of pore structure fluctuations. The investigated pore sizes range between 10 and 600 nm. Katz-Thompson model derived from percolation theory, coupled to pore structure data from FIB/SEM, predict fluid transport properties in the Darcy's sense. Upscaled predictions at the mesoscale of the cement hydrates are on the same order of magnitude as experimental permeability at the pluri-centimetric scale (i.e. a macroscale for the HPC). This means that the pore network of the cement hydrates, imaged by FIB/SEM, has a relevant contribution to fluid transport through the HPC.Lire moins >
Langue :
Anglais
Comité de lecture :
Oui
Audience :
Internationale
Vulgarisation :
Non
Établissement(s) :
ISEN
Univ. Valenciennes
ENSCL
CNRS
Institut Catholique Lille
Centrale Lille
Univ. Artois
Université de Lille
Univ. Valenciennes
ENSCL
CNRS
Institut Catholique Lille
Centrale Lille
Univ. Artois
Université de Lille
Collections :
Équipe(s) de recherche :
Chimie, matériaux et procédés pour un nucléaire durable (CIMEND)
Date de dépôt :
2019-09-25T15:06:56Z
2021-03-04T15:41:44Z
2021-03-04T15:41:44Z