A Study on the Influence of the Next Generation Colored Inorganic Geopolymer Material Paint on the Insulation Measurement of Concrete Building Shell

Yeou-Fong Li, Ya-Xuan Xie, Jin-Yuan Syu, Chih-Hong Huang, Hsin-Hua Tsai, Ta-Wui Cheng, Yen-Chun Chen and Wei-Hao Lee
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Yeou-Fong Li: Department of Civil Engineering, National Taipei University of Technology, Taipei 10608, Taiwan
Ya-Xuan Xie: Department of Civil Engineering, National Taipei University of Technology, Taipei 10608, Taiwan
Jin-Yuan Syu: Department of Civil Engineering, National Taipei University of Technology, Taipei 10608, Taiwan
Chih-Hong Huang: College of Design, National Taipei University of Technology, Taipei 10608, Taiwan
Hsin-Hua Tsai: College of Design, National Taipei University of Technology, Taipei 10608, Taiwan
Ta-Wui Cheng: Institute of Mineral Resources Engineering, National Taipei University of Technology, Taipei 10608, Taiwan
Yen-Chun Chen: Institute of Mineral Resources Engineering, National Taipei University of Technology, Taipei 10608, Taiwan
Wei-Hao Lee: Institute of Mineral Resources Engineering, National Taipei University of Technology, Taipei 10608, Taiwan

Sustainability, 2021, vol. 14, issue 1, 1-18

Abstract: Many studies have shown that paint with reflective heat can effectively reduce the temperature of the building envelope and reduce the future energy consumption of the building. This study inspired the next-generation inorganic geopolymer material (IGM) color paint without volatile matter, which could be applied on concrete surfaces to reduce energy consumption in warm seasons. In this study, a total of five insulating IGM paints, white, red, green, blue, and yellow, were applied to a 50 cm × 50 cm × 12 cm concrete slab top surface. The highest average light reflectance of all the paints was 87.5% of white IGM paint, which was higher than plain concrete (36.4%). The heat flux and surface temperature were examined in the laboratory, and those test results were verified outdoor. The results showed that the IGM paints could effectively reduce the surface temperature and heat flux of the upper and lower surfaces of concrete slabs, and the white colored IGM paint was the best performer among all five colors, whereas the heat storage coefficient ( S f ) of red, white, yellow, blue, and green IGM painted concrete slabs were 0.57, 0.53, 3.62, 2.95, and 1.91 W·m −2 ·K −1 , respectively, lower than plain concrete (24.40 W·m −2 ·K −1 ). This coefficient was presented to externalize the thermal admittance. The overall measurement results showed that the concrete slab with colored IGM paints had better heat insulation ability than the plain concrete slab, especially in white IGM paint.

Keywords: inorganic; geopolymer; heat storage; light reflectivity; heat flux; sustainable cities and communities (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
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