| Title | Vitreous Foam with Thermal Insulating Property Produced with the Addition of Waste Glass Powder and Rice Husk Ash |
|---|---|
| ID_Doc | 27104 |
| Authors | Fernandes, FAD; Costa, DDD; Martin, CAG; Rossignolo, JA |
| Title | Vitreous Foam with Thermal Insulating Property Produced with the Addition of Waste Glass Powder and Rice Husk Ash |
| Year | 2023 |
| Published | Sustainability, 15.0, 1 |
| Abstract | Closed pore glass foams with dimensions of 60mm x 20 mm x 20 mm were produced using agro-industrial residues. Samples containing sodo-calcic glass powder (78%wt) and rice husk ash (16%wt) were characterized, and their technological properties were investigated. The samples were synthesized in a conventional muffle furnace at 750-800-850 degrees C. The results presented for apparent density (0.24-0.29 g/cm(3)), compressive strength (1.5-2.3 MPa) and thermal conductivity (0.021-0.025 W/mK) meet the standards for commercial foam glasses. Low viscosity was achieved at all temperatures as a result of the addition of rice husk ash to the cell structure. X-ray fluorescence showed that the glass was silico-sodo-calcic type (SiO2, Na2O and CaO), and that the rice husk ash was rich in SiO2 (as well as CaO, Na2O, Al2O3, K2O and Fe2O3). The mechanical strength and low thermal conduction of the material showed a good efficiency for use in civil construction as a thermal insulating material. Material made in this way has a lower production cost, and additionally transforms waste into co-products, generating added value, favoring consecutive circulation, as well as a clean and circular economy. |
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