Sustainable construction materials from alkali-activated waste fiberglass and waste refractory
In this work, waste fiberglass was up-cycled, alone, or mixed with used alumina-zirconia-silica (AZS) refractory from dismantled glass melting furnaces. Alkali activation was performed by suspending fiberglass and fiberglass/AZS powders in NaOH aqueous solution of various concentrations (8M, 6M, and...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-12-01
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| Series: | Open Ceramics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666539524001421 |
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| author | Abel W. Ourgessa Jozef Kraxner Hamada Elsayed Dušan Galusek Enrico Bernardo |
| author_facet | Abel W. Ourgessa Jozef Kraxner Hamada Elsayed Dušan Galusek Enrico Bernardo |
| author_sort | Abel W. Ourgessa |
| collection | DOAJ |
| description | In this work, waste fiberglass was up-cycled, alone, or mixed with used alumina-zirconia-silica (AZS) refractory from dismantled glass melting furnaces. Alkali activation was performed by suspending fiberglass and fiberglass/AZS powders in NaOH aqueous solution of various concentrations (8M, 6M, and 3M). The activation of waste fiberglass with 8M NaOH yields a gel with calcium and sodium-containing aluminosilicate hydrates. The addition of AZS refractory enabled the release of aluminates into the solution, which had beneficial effects on the mechanical properties. Low molarity activation yielded weaker materials which could be used as precursors for firing at moderate temperatures (800 °C and 1000 °C) to create cellular glass-ceramics, with a total porosity of up to 92 %. The firing of 8M activated samples resulted in glass ceramics with a 66–75 % porosity range and compressive strength of 10–23Mpa. The compressive strength-to-density ratio before and after firing was comparable to that of established commercial construction materials. |
| format | Article |
| id | doaj-art-5c96e8797ebe41f696cacd45493d10b1 |
| institution | Kabale University |
| issn | 2666-5395 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Open Ceramics |
| spelling | doaj-art-5c96e8797ebe41f696cacd45493d10b12024-12-08T06:12:55ZengElsevierOpen Ceramics2666-53952024-12-0120100678Sustainable construction materials from alkali-activated waste fiberglass and waste refractoryAbel W. Ourgessa0Jozef Kraxner1Hamada Elsayed2Dušan Galusek3Enrico Bernardo4FunGlass, Centre for Functional and Surface Functionalized Glass, Alexander Dubček University of Trenčín, 911 50, Trenčín, Slovakia; Department of Industrial Engineering, University of Padova, 35131, Padova, Italy; Corresponding author. FunGlass, Alexander Dubcek University of Trenčín, 911 50, Trenčín, Slovakia.FunGlass, Centre for Functional and Surface Functionalized Glass, Alexander Dubček University of Trenčín, 911 50, Trenčín, SlovakiaDepartment of Industrial Engineering, University of Padova, 35131, Padova, ItalyFunGlass, Centre for Functional and Surface Functionalized Glass, Alexander Dubček University of Trenčín, 911 50, Trenčín, Slovakia; Joint Glass Centre of the IIC SAS, TnUAD and FChFT STU, 911 50, Trenčín, SlovakiaDepartment of Industrial Engineering, University of Padova, 35131, Padova, ItalyIn this work, waste fiberglass was up-cycled, alone, or mixed with used alumina-zirconia-silica (AZS) refractory from dismantled glass melting furnaces. Alkali activation was performed by suspending fiberglass and fiberglass/AZS powders in NaOH aqueous solution of various concentrations (8M, 6M, and 3M). The activation of waste fiberglass with 8M NaOH yields a gel with calcium and sodium-containing aluminosilicate hydrates. The addition of AZS refractory enabled the release of aluminates into the solution, which had beneficial effects on the mechanical properties. Low molarity activation yielded weaker materials which could be used as precursors for firing at moderate temperatures (800 °C and 1000 °C) to create cellular glass-ceramics, with a total porosity of up to 92 %. The firing of 8M activated samples resulted in glass ceramics with a 66–75 % porosity range and compressive strength of 10–23Mpa. The compressive strength-to-density ratio before and after firing was comparable to that of established commercial construction materials.http://www.sciencedirect.com/science/article/pii/S2666539524001421Alkali activationWaste refractoryUpcyclingWaste fiberglass |
| spellingShingle | Abel W. Ourgessa Jozef Kraxner Hamada Elsayed Dušan Galusek Enrico Bernardo Sustainable construction materials from alkali-activated waste fiberglass and waste refractory Open Ceramics Alkali activation Waste refractory Upcycling Waste fiberglass |
| title | Sustainable construction materials from alkali-activated waste fiberglass and waste refractory |
| title_full | Sustainable construction materials from alkali-activated waste fiberglass and waste refractory |
| title_fullStr | Sustainable construction materials from alkali-activated waste fiberglass and waste refractory |
| title_full_unstemmed | Sustainable construction materials from alkali-activated waste fiberglass and waste refractory |
| title_short | Sustainable construction materials from alkali-activated waste fiberglass and waste refractory |
| title_sort | sustainable construction materials from alkali activated waste fiberglass and waste refractory |
| topic | Alkali activation Waste refractory Upcycling Waste fiberglass |
| url | http://www.sciencedirect.com/science/article/pii/S2666539524001421 |
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