| Title: | High temperature resistant fly-ash and metakaolin-based alkali-activated foams |
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| Authors: | ID Traven, Katja (Author)
ID Češnovar, Mark (Author)
ID Škapin, Srečo D. (Author)
ID Ducman, Vilma (Author) |
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| Files: |  URL - Source URL, visit https://www.sciencedirect.com/science/article/pii/S0272884221016412?via%3Dihub
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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: | Alkali-activated foams (AAFs) present one of the most promising materials for use in the construction sector. Their main advantages lie in their utilization of waste material and their ability to form at temperatures well below 100 °C, while still competing in performance with foamed glass or ceramics. The present body of research has focused on improving the thermal stability of fly-ash foams by i) adding metakaolin, and ii) changing the activator from sodium-based to potassium-based components. It has been confirmed that a certain increase in thermal resistance is achieved through the addition of metakaolin while changing activators played a crucial role. While sodium-based AAFs without metakaolin start to shrink at approximately 600 °C, samples that have had metakaolin added start to shrink at approximately 700 °C. Samples without metakaolin that have used a potassium activator start to shrink at approximately 800 °C, whereas potassium-based samples with the addition of metakaolin start to shrink at approximately 900 °C. |
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| Keywords: | alkali activated materials, geopolymers, high temperature, resistance, foams |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 09.06.2021 |
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| Publisher: | Ceramurgica s.p.a. |
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| Year of publishing: | 2021 |
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| Number of pages: | 25105-25120 |
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| Numbering: | 17, 47 |
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| PID: | 20.500.12556/DiRROS-16246  |
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| UDC: | 620.1/.2 |
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| ISSN on article: | 0272-8842 |
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| DOI: | 10.1016/j.ceramint.2021.05.241 |
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| COBISS.SI-ID: | 66311683 |
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| Copyright: | © 2021 The Author(s) |
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| Publication date in DiRROS: | 01.08.2023 |
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| Views: | 259 |
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| Downloads: | 204 |
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