Modeling of Ionic Diffusivity for Cement Paste with Solid Mass Fractal Model and Lattice Boltzmann Method
Publication: Journal of Materials in Civil Engineering
Volume 29, Issue 5
Abstract
Ionic diffusivity is of critical importance to the service life of cementitious composites. In this paper, ionic diffusivity of cement paste is modeled with the solid mass fractal model and the lattice Boltzmann method. In particular, the solid mass fractal model is proposed and applied to build up pore structure in conjunction with the porosimetric test. Thereafter, the lattice Boltzmann method is applied to model the associated ionic diffusivity with respect to the law of ionic diffusion for both saturated and unsaturated cement pastes. In addition, for the sake of validation, the results of the present modeling are compared with those obtained from literature and experiment.
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Acknowledgments
The authors gratefully acknowledge the financial support from National Program on Key Basic Research Project (Grant No. 2015CB655105), China Railway Corporation (Grant No. 2013G001-A), and Jiangsu Natural Science Foundation (Grant No. BK20150621).
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Published In
Journal of Materials in Civil Engineering
Volume 29 • Issue 5 • May 2017
Copyright
©2016 American Society of Civil Engineers.
History
Received: May 24, 2016
Accepted: Sep 2, 2016
Published online: Nov 23, 2016
Discussion open until: Apr 23, 2017
Published in print: May 1, 2017
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