Simulação numérica dos fatores que influenciam a umidade ascensional

Abstract

Moisture is one of the main causes of damage to buildings, especially moisture from the soil which, through capillarity, enters the building elements, which is called ascension moisture. Understanding how this phenomenon occurs is of great importance for civil construction, especially when it comes to historic buildings where water cutting techniques were not used during construction. There are several factors that influence the phenomenon of rising humidity, among which we can mention the properties of the materials, depending on the climatic conditions and the use of coverings. In order to check how these factors influence the height of the wet front, use the calculation program WUFI-2D v. 4.2 to perform numerical simulations of rising humidity. The results of the increased simulations that the increase in the wall thickness, the porosity of the materials and the relative humidity of the environment generate an increase in the height of the wet front, as well as the adoption of more impermeable coatings cause a higher wet front if compared with the use of more porous coatings.