On Estimating the Effective Diffusive Properties of Hardened Cement Pastes

• Published in: Transport in porous media Vol. 73; no. 3; pp. 279 - 295
• Main Authors: Stora, Eric, Bary, Benoît, He, Qi-Chang
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.07.2008; Springer; Springer Nature B.V
• Subjects: Cement; Cement paste; Cements; Civil Engineering; Classical and Continuum Physics; Diffusion; Earth and Environmental Science; Earth Sciences; Earth, ocean, space; Engineering and environment geology. Geothermics; Estimates; Exact sciences and technology; Geotechnical Engineering & Applied Earth Sciences; Homogenization; Homogenizing; Hydrocarbons; Hydrogeology; Hydrology. Hydrogeology; Hydrology/Water Resources; Industrial Chemistry/Chemical Engineering; Intrusion; Leaching; Mathematical models; Pastes; Pollution, environment geology; Porosity; Sedimentary rocks; Cement Paste; Effective-medium approximations; Homogenization; Connectivity; Composite spheres assemblage; Porosity; Leaching; Diffusivity; models; diffusion; mercury; porosity; fine-grained materials; leaching; transport; intrusions; grains; Q; cement; homogenization; materials; buildings; diffusivity; prediction; microstructures; porous media

The effective diffusion coefficients of hardened cement pastes can vary between a few orders of magnitude. The paper aims at building a homogenization model to estimate these macroscopic diffusivities and capture such strong variations. For this purpose, a three-scale description of the paste is pro...