Ramteke, D.D.; Hujova, M.; Kraxner, J.; Galusek, D.; Elsayed, H.; Colombo, P.; Bernardo, E. Extensive Reuse of Waste Glass in Geopolymer-Like Materials. Preprints2023, 2023120298. https://doi.org/10.20944/preprints202312.0298.v1
APA Style
Ramteke, D.D., Hujova, M., Kraxner, J., Galusek, D., Elsayed, H., Colombo, P., & Bernardo, E. (2023). Extensive Reuse of Waste Glass in Geopolymer-Like Materials. Preprints. https://doi.org/10.20944/preprints202312.0298.v1
Chicago/Turabian Style
Ramteke, D.D., Paolo Colombo and Enrico Bernardo. 2023 "Extensive Reuse of Waste Glass in Geopolymer-Like Materials" Preprints. https://doi.org/10.20944/preprints202312.0298.v1
Abstract
The recycling of common soda-lime glass (SLG) is far from being complete, since the material may contain small polymeric, metallic and ceramic contaminations. This has a negative impact on the quality of new glass articles prepared via re-melting. Alternatively, the full reuse of contaminated cullets could be achieved by low-temperature consolidation into geopolymer-like materials. SLG powders, used either as received or pre-washed in acid solution, were added to a sodium aluminate solution at the room temperature for 3 h, under low-speed mechanical stirring. Microporous semi-crystalline monoliths were formed by the casting of suspensions in plastic molds and cured at 75°C overnight. The monoliths featured hydrosodalite as the main crystalline phase for as received SLG and LTA zeolite in the case of pre-washed SLG. The mechanical properties compared well with those of cementitious materials. Moreover, by addition of coarse glass particles as fillers, the methodology successfully yielded Venetian terrazzo-like samples, which could lead to significant material and energy savings in their manufacture. The proposed approach could also be extended to other difficult-to-reuse glass formulations and provide attractive and versatile up-cycled materials.
Engineering, Architecture, Building and Construction
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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