Abstract
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.
Original language | English |
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Title of host publication | 4th International Rilem Conference on Microstructure Related Durability of Cementitious Composites |
Subtitle of host publication | Microdurability 2020 |
Editors | Guang Ye, Hua Dong, Jiaping Liu, Erik Schlangen, Changwen Miao |
Publisher | Delft University of Technology |
Pages | 876-884 |
Number of pages | 9 |
ISBN (Electronic) | 978-94-6366-422-6 |
Publication status | Published - 2021 |
Event | 4th International Rilem Conference on Microstructure Related Durability of Cementitious Composites - Online, Delft, Netherlands Duration: 29 Apr 2021 → 27 May 2021 Conference number: 4 https://www.microdurability2020.com/99721 |
Conference
Conference | 4th International Rilem Conference on Microstructure Related Durability of Cementitious Composites |
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Abbreviated title | Microdurability |
Country/Territory | Netherlands |
City | Delft |
Period | 29/04/21 → 27/05/21 |
Internet address |
Keywords
- lattice Boltzmann method
- chloride transport
- alkali-activated slag
- chloride binding