Abstract
AbstractA practical way to evaluate drying in porous building materials is through environmental conditioning drying curve where drying is influenced by external factors such as environmental conditions and by the material properties. However, attaining drying curves can be an extremely slow process, which can be unsuited with the schedule and the available resources. This work describes the drying process in porous building materials using the simulation tool “TRHumidade” for the determination of water content profiles inside those materials and comparing with the well-known simulation tool “WUFI Pro” and experimental results obtained by gamma ray. One of the main goals is to validate the use of TRHumidade and evaluate the better tool (TRHumidade vs. WUFI Pro) to describe liquid phase drying processes, to evaluate if the water content potential describes better the drying phenomenon. The numerical results obtained with TRHumidade and WUFI simulation tools are similar to the experimental ones obtained by ...
Highlights
Drying can be defined as the process by which water leaves a porous building material being its understanding and knowledge necessary to predict the performance of those materials in service (Guiné, 2010; Maroulis & Saravacos, 2005).When a saturated porous building material is in contact with an environment with constant temperature and relative humidity, it is possible to identify three drying phases with different drying speeds as can be seen in Figure 1 (Berthier, 1980).The first phase occurs when the capillary forces can feed the material surface in liquid water
This work describes the drying process in porous building materials using a new simulation tool “TRHumidade” for the determination of water content profiles inside those materials and comparing with the well-known simulation tool “WUFI Pro” and experimental results obtained by gamma ray
Though when the drying process of the autoclaved cellular concrete (ACC) occurs in the oven at 75°C of temperature and with less than 5% of relative humidity, it can be perfectly seen the indentation of the wet front and the second phase of the drying process (Figure 6)
Summary
Drying control is essential to the correct performance of any building. Controlling it is important to safeguard inhabitants from adverse health effects and to protect the building itself. A practical way to evaluate drying in porous building materials is through environmental conditioning drying curve where drying is influenced by external factors such as environmental conditions and by the material properties. This work describes the drying process in porous building materials using a new simulation tool “TRHumidade” for the determination of water content profiles inside those materials and comparing with the well-known simulation tool “WUFI Pro” and experimental results obtained by gamma ray. The good results means that the TRHumidade can be used to study the drying process of the porous building materials. Subjects: Computer Mathematics; Mathematical Modeling; Mathematical Physics; Software Engineering & Systems Development; Nondestructive Testing; Heat Transfer; Materials Science; Water Science
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