| Title: | Slate-like alkali-activated roofing tiles produced using copper slag and ground granulated blast furnace slag |
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| Authors: | ID Ducman, Vilma (Author)
ID Wisniewski, Wolfgang (Author)
ID Muhammad, Afsar (Author)
ID Kvočka, Davor (Author)
ID Tatsis, Efthymios (Author)
ID Kriskova, Lubica (Author)
ID Pontikes, Yiannis (Corresponding author) |
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| Files: |  URL - Source URL, visit https://doi.org/10.1016/j.rineng.2026.110166
 PDF - Presentation file, download (15,29 MB)
MD5: C393F3B90E67663692D8C93BDB69CEEE
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  ZAG - Slovenian National Building and Civil Engineering Institute
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| Abstract: | A new type of slate-mimicking roofing tile based on the alkali-activation of an Fe-rich slag has been developed. The main scientific contribution lies in the targeted valorisation of Fe-rich slag for thin, slate-like roofing elements that must satisfy strict roofing-specific requirements, including a limited thickness, low permeability, freeze–thaw resistance, dimensional stability, and high surface quality. Achieving the required properties and optical appearance necessitated a double-layer setup, where a fibre layer primarily provided the required mechanical properties, while a surface layer ensured the desired optical appearance. The microstructure of the produced roofing tiles was analysed using scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDXS) and Hg-porosimetry (MIP), and was compared to reference products on the market. A life cycle assessment (LCA) indicates that the current laboratory-scale production cannot yet compete with established market solutions; however, projected improvements in curing energy efficiency at industrial scale suggest strong potential for environmental competitiveness. Hence these roofing tiles could become an environmentally friendly alternative to current roofing materials. Additionally, a demonstration roof was installed to monitor the long-term performance of the roofing tiles over several years under real seasonal exposure. |
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| Keywords: | slag, roofing tiles, slate like tiles, performance |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 19.03.2026 |
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| Publisher: | Elsevier |
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| Year of publishing: | 2026 |
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| Number of pages: | str. 1-12 |
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| Numbering: | Vol. 30, [article no.] 110166 |
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| PID: | 20.500.12556/DiRROS-28582  |
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| UDC: | 624 |
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| ISSN on article: | 2590-1230 |
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| COBISS.SI-ID: | 272773891 |
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| Copyright: | © 2026 The Author(s) |
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| Note: |
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| Publication date in DiRROS: | 07.04.2026 |
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| Views: | 141 |
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| Downloads: | 87 |
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