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Pro084-1

TRANSCENDING THE PORE STRUCTURE OF A CEMENT PASTE: A 3D EFFECTIVE MEDIA LATTICE BOLTZMANN APPROACH



Author(s): M. Zalzale, P.J. McDonald and K.L. Scrivener
Paper category: Proceedings
Book title: Proceedings of CONSEC13 Seventh International Conference on Concrete under Severe Conditions - Environment and Loading Volume I
Editor(s): Z.J. Li, W. Sun, C.W. Miao, K.Sakai, O.E. Gjørv, N.Banthia
ISBN: 978-2-35158-124-7
e-ISBN: 978-2-35158-134-6
Publisher: RILEM Publications SARL
Publication year: 2013
Pages: 111-120
Total Pages: 961
Language : English


Abstract: A three-dimensional lattice Boltzmann model based on the effective media approach is used to calculate the intrinsic permeability of cement microstructures determined using the model μIC. The model comprises capillary pores, C-S-H gel pores and solid phases. The C-S-H phase is assigned a very low permeability and does consequently connect the depercolated capillary pores and air voids.
It is found that when the modelled capillary porosity corresponds to the volume of water-accessible capillary pores and air voids, as measured by H nuclear magnetic resonance relaxation analysis, the modelled permeability is in very good agreement with water permeability experiments.


Online publication : 2013
Publication type : full_text
Public price (Euros) : 0.00


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