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.
Multiphase model for hygrothermal analysis of porous media with salt crystallization and hydration / Castellazzi, G.; de Miranda, S.; Grementieri, L.; Molari, L; Ubertini, F.. - In: MATERIALS AND STRUCTURES. - ISSN 1359-5997. - STAMPA. - 49:3(2016), pp. 1039-1063. [10.1617/s11527-015-0557-y]
Multiphase model for hygrothermal analysis of porous media with salt crystallization and hydration
CASTELLAZZI, GIOVANNI;DE MIRANDA, STEFANO;GREMENTIERI, LISA;MOLARI, LUISA;UBERTINI, FRANCESCO
2016
Abstract
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
