Titre :

Mesoscale pore structure of a high‐performance concrete by coupling focused ion beam/scanning electron microscopy and small angle X‐ray scattering

Auteur(s) :

Brisard, Sébastien [Auteur]
Laboratoire Navier [navier umr 8205]
Davy, Catherine [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Michot, Laurent [Auteur]
PHysicochimie des Electrolytes et Nanosystèmes InterfaciauX [PHENIX]
Troadec, David [Auteur]
Centrale de Micro Nano Fabrication - IEMN [CMNF - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Levitz, Pierre [Auteur]
PHysicochimie des Electrolytes et Nanosystèmes InterfaciauX [PHENIX]

Titre de la revue :

Journal of the American Ceramic Society

Pagination :

2905–2923

Éditeur :

Wiley

Date de publication :

2019-05-01

ISSN :

0002-7820

Mot(s)-clé(s) en anglais :

Small-angle X-ray scattering SAXS
High-performance concretes HPC
Focused ion beam/scanning electron microscopy FIB/SEM
Mesoscale pore network

Discipline(s) HAL :

Sciences de l'ingénieur [physics]/Matériaux

Résumé en anglais : [en]

This contribution couples (a) Small angle X‐ray scattering (SAXS) experiments of a high‐performance concrete (HPC) at the millimetric scale, and (b) Focused ion beam/scanning electron microscopy (FIB/SEM) of the cement ...
Lire la suite >This contribution couples (a) Small angle X‐ray scattering (SAXS) experiments of a high‐performance concrete (HPC) at the millimetric scale, and (b) Focused ion beam/scanning electron microscopy (FIB/SEM) of the cement paste of the HPC, with 10‐20 nm voxel size. The aim is to improve the understanding of the 3D pore network of the HPC at the mesoscale (tens of nm), which is relevant for fluid transport. The mature HPC is an industrial concrete, based on pure Portland CEMI cement, and planned for use as structural elements for deep underground nuclear waste storage. Small angle X‐ray scattering patterns are computed from the 3D pore images given by FIB/SEM (volumes of 61‐118 μm3). They are positively correlated with SAXS measurements (volumes of 5 mm3). Aside from correlations with FIB/SEM data, experimental SAXS allows to investigate a wider range of effects on the pore structure. These are mainly the HPC drying state, the presence of aggregates (by analyzing data on cement paste alone), and the use of Poly Methyl MethAcrylate resin impregnation.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL