https://doi.org/10.1140/epjp/s13360-025-06677-3
Regular Article
Characterization of mixed- waste glasses in the CAS system: insights from differential scanning calorimetry and Raman spectroscopy
1
Scuola di Scienze e Tecnologie, Sezione di Geologia, Università di Camerino, Camerino, Italy
2
Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, Parma, Italy
3
Consiglio Nazionale delle Ricerche, Istituto di Scienza, Tecnologia e Sostenibilità per lo Sviluppo dei Materiali Ceramici (ISSMC), via Granarolo 64, 48018, Faenza, Italy
4
Dipartimento di Scienze, Università Roma Tre, Rome, Italy
Received:
8
May
2025
Accepted:
21
July
2025
Published online:
8
August
2025
Construction and Demolition Waste (CDW) was blended with various ceramic residues (bricks, roof tiles, and ceramic powder) and melted at 1200 °C for 8 h to evaluate their potential for producing industrially viable glasses within the CaO-Al2O3-SiO2 (CAS) system. High-temperature treatments yielded fully amorphous products for mixtures containing 70 wt.% ceramic waste, highlighting the need for additive inputs to CDW to achieve complete vitrification. Raman Spectroscopy was employed to assess the structural polymerization of the glasses; deconvolution of the silicate stretching region revealed a greater proportion of highly polymerized Q3 and Q4 species in ceramic powder-rich samples. Differential Scanning Calorimetry (DSC) measurements provided viscosity estimates near the glass transition, which positively correlated with the degree of polymerization inferred from Raman analysis. Among all tested compositions, the C70 sample (containing 70 wt.% ceramic powder) exhibited the highest viscosity and degree of polymerization, consistent with its higher silica content and amorphous precursor phase. Notable shifts in glass transition interval and structural polymerization emphasize the influence of waste type on glass properties. These findings support the feasibility of recycling CDW-ceramic waste blends with specific thermal and structural properties for targeted industrial glass applications such as fining, molding, and annealing.
Supplementary Information The online version contains supplementary material available at https://doi.org/10.1140/epjp/s13360-025-06677-3.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
