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Utilization of mineral wool waste and waste glass for synthesis of foam glass at low temperature

Ji, R; Zheng, Y; Zou, Z; Chen, Z; Wei, S; Jin, X; Zhang, M; (2019) Utilization of mineral wool waste and waste glass for synthesis of foam glass at low temperature. Construction and Building Materials , 215 pp. 623-632. 10.1016/j.conbuildmat.2019.04.226. Green open access

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Abstract

To reduce the energy consumed by building part, a new method of producing foam glass at low temperature was proposed in this study. Mineral wool waste and waste glass recycled from building construction and demolition (C&D) process were used as major raw materials. In the meanwhile, calcium carbonate (CaCO3), borax (Na2B4O7·10H2O) and sodium phosphate (Na3PO4·12H2O) were added as extra additives, which played the part of foamer, fluxing agent and foam stabilizer, respectively. The effects of different content of each additives and different sintering temperature on the properties of foam glass were investigated. Bulk density, cross-section view and microstructure of the specimens were showed. The experiment results showed that the optimal content of raw materials and additives was 40 wt% mineral wool waste, 60 wt% waste glass, 20 wt% borax, 1–2 wt% calcium carbonate and 2 wt% sodium phosphate, and its optimal sintering temperature was 800 °C. The specimen sintered at this optimal condition had the most uniform foam structure and low bulk density of 0.7 g/cm3. Finally, EnergyPlusTM was used to evaluate the benefit of applying this new foam glass on the reduction on space conditioning loads, especially in relatively colder zones.

Type: Article
Title: Utilization of mineral wool waste and waste glass for synthesis of foam glass at low temperature
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.conbuildmat.2019.04.226
Publisher version: https://doi.org/10.1016/j.conbuildmat.2019.04.226
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Foam glass, Thermal insulation material, Solid waste, Mineral wool waste, Waste glass
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment
URI: https://discovery.ucl.ac.uk/id/eprint/10077368
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