Integration of a Microstructural Model in a Coupled Reactive Transport Simulation of Carbonation and Drying

Fabien Georget, Jean H. Prévost

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

To guarantee the durability of new cement and concrete formulations, we need to understand the long-term degradation mechanisms and how they relate to the evolution of the microstructure. Inside a porous medium, the different phenomena are coupled by the microstructure and its evolution. For example, in coupled simulation of drying and carbonation, the entry of CO2 and release of water will occur through the carbonated layer which has distinct properties from the non-carbonated core. To solve this problem, we propose a new reactive transport implementation which can integrate a custom-made microstructure model adapted to the problem at hand. This feature has many strong numerical challenges and it leads to a robust and flexible reactive transport framework. We demonstrate its capabilities through coupled carbonation and drying simulation of cement pastes. We show that the water transport properties are key elements in the rate of propagation of the carbonation reaction. To reach quantitative prediction abilities, the capillary pressure and the relative transport properties must be computed accurately in both the carbonated and the non-carbonated layers.

Original languageEnglish (US)
Title of host publicationPoromechanics 2017 - Proceedings of the 6th Biot Conference on Poromechanics
EditorsPatrick Dangla, Jean-Michel Pereira, Siavash Ghabezloo, Matthieu Vandamme
PublisherAmerican Society of Civil Engineers (ASCE)
Pages672-680
Number of pages9
ISBN (Electronic)9780784480779
DOIs
StatePublished - Jan 1 2017
Event6th Biot Conference on Poromechanics, Poromechanics 2017 - Paris, France
Duration: Jul 9 2017Jul 13 2017

Publication series

NamePoromechanics 2017 - Proceedings of the 6th Biot Conference on Poromechanics

Other

Other6th Biot Conference on Poromechanics, Poromechanics 2017
CountryFrance
CityParis
Period7/9/177/13/17

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Acoustics and Ultrasonics

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  • Cite this

    Georget, F., & Prévost, J. H. (2017). Integration of a Microstructural Model in a Coupled Reactive Transport Simulation of Carbonation and Drying. In P. Dangla, J-M. Pereira, S. Ghabezloo, & M. Vandamme (Eds.), Poromechanics 2017 - Proceedings of the 6th Biot Conference on Poromechanics (pp. 672-680). (Poromechanics 2017 - Proceedings of the 6th Biot Conference on Poromechanics). American Society of Civil Engineers (ASCE). https://doi.org/10.1061/9780784480779.083