| Title: | Microstructural characterization of alkali-activated composites of lightweight aggregates (LWAs) embedded in alkali-activated foam (AAF) matrices |
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| Authors: | ID Traven, Katja (Author)
ID Wisniewski, Wolfgang (Author)
ID Češnovar, Mark (Author)
ID Ducman, Vilma (Author) |
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| Files: |  URL - Source URL, visit https://www.mdpi.com/2073-4360/14/9/1729
 PDF - Presentation file, download (4,49 MB)
MD5: 1B01971608E6EFAA9CFB75CDEE6EE741
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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 composites of lightweight aggregates (LWAs, with beneficial insulating properties) and alkali-activated foams (AAFs, higher added value products due to their production from waste materials at well below 100 ◦C) allow for the expectation of superior properties if a chemical bonding reaction or mechanical interlocking occurs during production. However, the interfaces between LWAs and an AAF have not been studied in detail so far. Chemical reactions are possible if the LWA contains an amorphous phase which can react with the alkaline activators of the AAF, increase the bonding, and thus, also their mechanical strengths. These, in turn, allow for an improvement of the thermal insulation properties as they enable a further density reduction by incorporating low density aggregates. This work features a first-detailed analyses of the interfaces between the LWAs’ expanded polystyrene, perlite, expanded clay and expanded glass, and the alkali-activated foam matrices produced using industrial slags and fly ash. Some are additionally reinforced by fibers. The goal of these materials is to replace cement by alkali-activated waste as it significantly lowers the environmental impact of the produced building components. |
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| Keywords: | alkali activated materials/geopolymers, light weight aggregates, SEM |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 23.04.2022 |
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| Publisher: | Molecular Diversity Preservation International |
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| Year of publishing: | 2022 |
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| Number of pages: | str. 1-14 |
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| Numbering: | Vol. 14, iss. 9 |
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| PID: | 20.500.12556/DiRROS-15841  |
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| UDC: | 620.1/.2 |
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| ISSN on article: | 2073-4360 |
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| DOI: | 10.3390/polym14091729 |
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| COBISS.SI-ID: | 105856515 |
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| Copyright: | © 2022 by the authors.
Licensee MDPI, Basel, Switzerland |
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| Note: | Nasl. z nasl. zaslona;
Opis vira z dne 25. 4. 2022;
Št. članka: 3879;
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| Publication date in DiRROS: | 20.06.2023 |
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| Views: | 350 |
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| Downloads: | 180 |
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