Multiphase model for hygrothermal analysis of porous media with salt crystallization and hydration

作者：Castellazzi G; de Miranda S; Grementieri L; Molari L^*; Ubertini F

来源：Materials and Structures, 2016, 49(3): 1039-1063.

DOI：10.1617/s11527-015-0557-y

• Porous material
• Salt crystallization
• Sulphates
• Non-isothermal multiphase coupled model

A new fully coupled multiphase model for hygrothermal analysis and prediction of salt diffusion and crystallization in porous building materials is presented. The relative humidity, the temperature, the concentration of the dissolved salt and the concentration of precipitated salts are assumed as independent variables. A suitable modelling of the crystallization/dissolution and hydration/dehydration processes allows considering salts with hydrous and anhydrous crystals. Some numerical applications on fired-clay bricks show the effectiveness of the proposed approach.

• 出版日期2016-3