Lattice Boltzmann simulation of chloride transport in alkali-activated slag

Lattice Boltzmann simulation of chloride transport in alkali-activated slag

Xu, Z. (TU Delft Materials and Environment)
Zuo, Y. (Huazhong University of Science and Technology)
Ye, G. (TU Delft Materials and Environment)

Ye, Guang (editor)
Dong, Hua (editor)
Liu, Jiaping (editor)
Schlangen, Erik (editor)
Miao, Changwen (editor)

2021

In this work, a numerical model is proposed to study chloride transport in alkali-activated materials. This model is based on multiple-relaxation-time lattice Boltzmann method, where particle distribution function is introduced to simulate the chloride binding and diffusion. This model takes into account diffusion, homogenous reaction between chloride ions and diffusive solid, and heterogeneous reaction between chloride ions and non-diffusive solid. The accuracy of the model is confirmed by a benchmark simulation of transient reactive transport problem. As a demonstration, this model is then applied to simulate chloride transport in alkali-activated slag paste with varying alkaline activators. The influence of alkali content, silica content, curing age and chloride binding on the chloride transport property is briefly discussed.

lattice Boltzmann method
chloride transport
alkali-activated slag
chloride binding

http://resolver.tudelft.nl/uuid:355a19f5-88fd-413a-9537-f43fc9ee2355

Delft University of Technology

978-94-6366-422-6

4th International Rilem Conference on Microstructure Related Durability of Cementitious Composites: Microdurability 2020

4th International Rilem Conference on Microstructure Related Durability of Cementitious Composites, 2021-04-29 → 2021-05-27, Online, Delft, Netherlands

Institutional Repository

conference paper

© 2021 Z. Xu, Y. Zuo, G. Ye