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Numerical Simulation of Moisture Transport Along Ceramic Bricks—Drying Process
The drying process depends on internal and external factors such as temperature, relative humidity, the critical water content of the material, and the water transport properties in the liquid and vapor phases. However, the interface phenomena observed in multi-layered building components, as brick–mortar composites, or mortar-brick-insulation-mortar solutions, contribute to obtaining different values that result from the moisture transfer considering different materials/layers separately. The interface phenomena promote a hygric resistance which means that becomes a slowing moisture transport across the material interface. In this work a numerical study was carried out in order to analyse two different ceramic brick blocks with different interfaces, hydraulic contact interface, perfect contact interface, and air space), at different interface heights. The data used to run the simulations were taken from the wetting experiments on the samples; the corresponding moisture content profiles were measured using a gamma-ray spectrometer. Finally, the numerical results were compared with experimental values presented in the literature. The results showed an increase in the drying time constant for the materials with interface compared to monolithic materials. In addition, the farther away the interface is located from the base, the longer the drying time constant.
Numerical Simulation of Moisture Transport Along Ceramic Bricks—Drying Process
The drying process depends on internal and external factors such as temperature, relative humidity, the critical water content of the material, and the water transport properties in the liquid and vapor phases. However, the interface phenomena observed in multi-layered building components, as brick–mortar composites, or mortar-brick-insulation-mortar solutions, contribute to obtaining different values that result from the moisture transfer considering different materials/layers separately. The interface phenomena promote a hygric resistance which means that becomes a slowing moisture transport across the material interface. In this work a numerical study was carried out in order to analyse two different ceramic brick blocks with different interfaces, hydraulic contact interface, perfect contact interface, and air space), at different interface heights. The data used to run the simulations were taken from the wetting experiments on the samples; the corresponding moisture content profiles were measured using a gamma-ray spectrometer. Finally, the numerical results were compared with experimental values presented in the literature. The results showed an increase in the drying time constant for the materials with interface compared to monolithic materials. In addition, the farther away the interface is located from the base, the longer the drying time constant.
Numerical Simulation of Moisture Transport Along Ceramic Bricks—Drying Process
Building Pathology
Delgado, J. M. P. Q. (editor) / Araújo, C. M. (author) / Azevedo, A. C. (author) / Silva, F. A. N. (author)
Building Pathologies: Experimental Campaigns and Numerical Procedures ; Chapter: 2 ; 57-75
2023-03-02
19 pages
Article/Chapter (Book)
Electronic Resource
English
Numerical Simulation of Moisture Transport Along Ceramic Bricks—Wetting Process
| Springer Verlag | 2023
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