NDLI: Characterization of the development of microstructure and porosity of cement-based materials by numerical simulation and ESEM image analysis

Content Provider	Springer Nature Link
Author	Ye, G. Hu, J. Breugel, K. Stroeven, P.
Copyright Year	2002
Abstract	This paper describes the characterization of the development of the microstructure and porosity of cement-based materials simulated with a numerical model and compares the results with those obtained from environment scanning electron microscopy (ESEM) images. The numerical cement hydration model HYMOSTRUC is used to simulate the 3D microstructure of cement paste. The geometrical and topological properties of porous media are derived by applying a serial sectioning algorithm with an overlapping creterion. The stereological estimation of ESEM image is used to characterize the morphological changes of microstructure during the cement hydration process. The characteristic parameters simulated by the model and obtained from experiments are compared to one another. The influence of different w/c ratios,i.e. from 0.3 to 0.6, different finenesses of cement particles, 210 m$^{2}$/kg, 420 m$^{2}$/kg and 600 m$^{2}$/kg, and different lengths of curing period are investigated. The potential application of this simulated 3D microstructure on the transport properties being studied by applying a network permeability model. The capillary transport is considered in this model.Cet article décrit la caractérisation du développement de la microstructure et de la porosité des matériaux ciment-basés simulés avec un modèle numérique et compare les résultats à ceux obtenus à partir des images de la microscopie électronique d' environnement (ESEM). Le modèle numérique HYMOSTRUC d'hydration de ciment est employé pour simuler la microstructure 3D de la pâte de ciment. Les propriétés géométriques et topologiques des matériaux poreux sont dérivées appliquant un algorithme de sectionnement séquentiel avec un critère superposant. L'évaluation stéréoplogique de l'image d'ESEM est employée pour caractériser les changements morphologiques de la microstructure pendant le processus d'hydration de ciment. Les paramètres caractéristiques simulés par le modèle et obtenus à partir des expériences sont comparés l'un à l'autre. L'influence de différentes rapports aux/ciment, c'est-à-dire de 0,3 à 0,6, différentes finesses des particules de ciment, 210 m$^{2}$/kg, 420 m$^{2}$/kg et 600 m$^{2}$/kg, et différentes durées de la période traitante sont étudiées. L'application potentielle de cette microstructure 3D simulée sur les propriétés de transport est étudiée en appliquant un modèle de perméabilité à réseau. Le transport capillaire est considéré dans ce modèle.
Starting Page	603
Ending Page	613
Page Count	11
File Format	PDF
ISSN	13595997
Journal	Materials and Structures
Volume Number	35
Issue Number	10
e-ISSN	18716873
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2002-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Theoretical and Applied Mechanics Structural Mechanics Mechanical Engineering Operating Procedures, Materials Treatment Civil Engineering Building Materials
Content Type	Text
Resource Type	Article
Subject	Building and Construction Mechanics of Materials Materials Science Civil and Structural Engineering

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