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Poromechanical Modeling of Hygric Shrinkage and Crystallization Swelling in Layered Porous Materials
In this paper, an approach for the complex modeling of coupled heat, moisture and salt transport in porous materials is presented, using a crystallization theory based on thermodynamics (Coussy 2006). The mechanical behavior of the porous material is described by the theory of poromechanics. Drying experiments on hydrophobated calcium silicate beams saturated with a Na2SO4 solution are used in order to validate the modeling approach. The hydrophobic layer is incorporated in the surface transfer coefficients. By this, the mass transfer coefficient is defined in function of the decreasing fraction of open pores during drying in a small part of the hydrophobic treated zone. The fraction decreases due to salt crystal formation in this hydrophobic part. The ability of the approach to model accurately the different occurring phenomena is shown.
Poromechanical Modeling of Hygric Shrinkage and Crystallization Swelling in Layered Porous Materials
In this paper, an approach for the complex modeling of coupled heat, moisture and salt transport in porous materials is presented, using a crystallization theory based on thermodynamics (Coussy 2006). The mechanical behavior of the porous material is described by the theory of poromechanics. Drying experiments on hydrophobated calcium silicate beams saturated with a Na2SO4 solution are used in order to validate the modeling approach. The hydrophobic layer is incorporated in the surface transfer coefficients. By this, the mass transfer coefficient is defined in function of the decreasing fraction of open pores during drying in a small part of the hydrophobic treated zone. The fraction decreases due to salt crystal formation in this hydrophobic part. The ability of the approach to model accurately the different occurring phenomena is shown.
Poromechanical Modeling of Hygric Shrinkage and Crystallization Swelling in Layered Porous Materials
Shao, Jian‐Fu (editor) / Burlion, Nicolas (editor) / Derluyn, H. (author) / Poupeleer, A. S. (author) / Van Gemert, D. (author) / Carmeliet, J. (author)
2013-02-19
8 pages
Article/Chapter (Book)
Electronic Resource
English
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