Mesoscale modelling of dynamic porosity in cement hydrate gel during a water sorption cycle: A lattice Boltzmann study

Mesoscale modelling of dynamic porosity in cement hydrate gel during a water sorption cycle: A lattice Boltzmann study

We describe a lattice Boltzmann modelling framework for fluid sorption coupled to a dynamic model of cement hydrate microstructure upon which it is possible to explore ideas of water sorption in cement emergent from NMR and other recent experimental studies. The results of the first simulations usin...

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Bibliographic Details
Published in:Cement and concrete research Vol. 146; p. 106475
Main Authors: McDonald, Peter J., Borg, Miryea N., Faux, David A.
Format: Journal Article
Language:English
Published: Elmsford Elsevier Ltd 01-08-2021
Elsevier BV
Subjects:
Cement paste
Dynamic models
Lattice Boltzmann modelling
Microstructure
Modelling
NMR
Nuclear magnetic resonance
Numerical modelling
Qualitative analysis
Sorption
Water sorption
Lattice Boltzmann modelling
Water sorption
Microstructure
Numerical modelling
Cement paste
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Summary:We describe a lattice Boltzmann modelling framework for fluid sorption coupled to a dynamic model of cement hydrate microstructure upon which it is possible to explore ideas of water sorption in cement emergent from NMR and other recent experimental studies. The results of the first simulations using the model are presented. We show that it is possible to extract transport and microstructural relaxation parameters from the simulations that are in good qualitative agreement with experiment. We discuss limitations of the methodology.
ISSN:0008-8846
1873-3948
DOI:10.1016/j.cemconres.2021.106475