Evaluation of Tio2 and CaC03 in fiber cement roof tiles for reducing the thermal load buildings

In this research, different materials are evaluated to improve reflectivity and reduce the thermal load generated by solar irradiation in buildings that use fiber cement tiles. This study aims to find commercial materials that are affordable and of low weight per area so that the general community can obtain favorable results in reducing the thermal load in buildings. This study uses materials based on solutions of white enamel and titanium dioxide (Tio2), with different concentrations of TiO2 and calcium carbonate, dispersed on corrugated sheets of fiber cement roofing. In them, the range of variation and the temperature profile of the surface (internal and external) are evaluated as a function of the concentration of the mixture, the margin of experimental performance, the weight per unit area and the results are compared between sheets, with and without the new coating solution. The sheet that presented the best performance was the one that had in its mixture a composition by weight of 75.29% white enamel and 24.71% titanium dioxide. This can reduce the average temperature on the external surface up to 9.5°C in the same buildings in approximately and 3.85°C on the surface of the side that does not have the mixture. In general, the performance of the solutions is sensitive to the manufacturing process and materials (centrifuge of the mixture, the amount of calcium cobalt, the amount of titanium dioxide and the total dispersion of the mixture on the surface of the tiles roof fiber cement).

• Autores: Rodríguez Toscano, Andrés; MOJICA HERAZO, JULIO CESAR; Álvarez Arias, Daniel; Ramírez Restrepo, Rafael
• Tipo de recurso: Article of investigation
• Fecha de publicación: 2022
• Institución: Corporación Universidad de la Costa
• Repositorio: REDICUC - Repositorio CUC
• Idioma: eng
• OAI Identifier: oai:repositorio.cuc.edu.co:11323/10838
• Acceso en línea: https://hdl.handle.net/11323/10838; https://repositorio.cuc.edu.co/
• Palabra clave: Energy; Potential; Thermal; Load; Buildings
• Rights: openAccess
• License: Atribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0)