Thermally insulating gypsum composites incorporating aerosil for sustainable energy-saving buildings
| Autor: | Rachid Lbibb, Mohamed El Wazna, Naoual Belouaggadia, Abdeslam El Bouari, Mohammed Ezzine, Omar Cherkaoui, Ouahiba Mrajji, Salma Ouhaibi |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Gypsum business.industry 0211 other engineering and technologies 02 engineering and technology Building and Construction engineering.material Thermal diffusivity Sustainable energy Thermal conductivity Flexural strength Mechanics of Materials Thermal insulation 021105 building & construction Architecture Thermal engineering 021108 energy Composite material Safety Risk Reliability and Quality business Civil and Structural Engineering Fumed silica |
| Zdroj: | Journal of Building Engineering. 43:102848 |
| ISSN: | 2352-7102 |
| DOI: | 10.1016/j.jobe.2021.102848 |
| Popis: | This study aimed to investigate the possibility of including aerosils in plaster to develop a highly insulating product. Several plaster samples were prepared by adding different Aerosil percentages (5%, 10%, and 15%). Composite materials were characterized experimentally. The thermo-physical and microstructural characteristics of these samples were determined experimentally. Also, the flexural strength of the samples was systematically evaluated. The results show a clear improvement of the samples' thermal conductivity with a decrease of about 83%. Moreover, the thermal diffusivity is reduced by up to 77%. Furthermore, Aerosil lightens the plaster by reducing its density by up to 45.8%. The materials studied’ exceptional thermal performance and low density confirmed good products for the thermal insulation market, leading to an increase in the energy-saving capabilities of these materials and widening their scope of application to new construction and rehabilitation. The composites containing 10% Aerosil have an excellent property compared to 15% Aerosil based on water absorbency , making them competitive with building materials used in the construction sector. |
| Databáze: | OpenAIRE |
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