Wpływ soli na wysychanie przegród budowlanych w polskich warunkach klimatycznych

A recently proposed mathematical model of coupled beat, moisture and salt transport in porous building materials has been briefly presented. Effect of salt on some physical phenomena and material characteristics has been discussed. Three different cases of the numerical simulations have been performed for a concrete wall containing the NaCl salt: considering the effect of salt on the sorption isotherm and effective porosity, considering only the latter effect, and omitting entirely the effects of salt. The simulation results, obtained for the climatic conditions of Warsaw, show that these effects are of importance for a proper assessment of the hydro-thermal state of building elements, especially in the historical buildings.