Influence of the pore network on hydrogen diffusion through blended cement pastes - INSA Toulouse - Institut National des Sciences Appliquées de Toulouse Access content directly
Journal Articles Cement and Concrete Composites Year : 2013

Influence of the pore network on hydrogen diffusion through blended cement pastes

Abstract

This article presents a study on the influence of the pore size distribution on gas diffusion through CEM V cement pastes, for different water saturation degrees. The numerical results are compared to the experimental hydrogen diffusion coefficients obtained with water saturation levels ranging from 20% to 95%. The model developed in our research group accounts for the various types of transfer through the pore network: Knudsen diffusion or molecular diffusion depending on the pore size, together with hydrogen diffusion through water. The virtual pore network is created from mercury porosimetry data as a result of the combination of different sizes pore families. By testing different combinations, we could propose pore arrangements leading to diffusion coefficients corresponding to the experimental ones, and show how the combinations of the biggest pore family contribute to control the gas diffusion process. (C) 2012 Elsevier Ltd. All rights reserved.
No file

Dates and versions

hal-01850844 , version 1 (27-07-2018)

Identifiers

Cite

Cedric Boher, Fabien Frizon, Sylvie Lorente, Florence Bart. Influence of the pore network on hydrogen diffusion through blended cement pastes. Cement and Concrete Composites, 2013, 37, pp.30--36. ⟨10.1016/j.cemconcomp.2012.12.009⟩. ⟨hal-01850844⟩
34 View
0 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More