| Naslov: | Evaluation of locally available amorphous waste materials as a source for alternative alkali activators |
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| Avtorji: | ID Koenig, Katja (Avtor)
ID Traven, Katja (Avtor)
ID Pavlin, Majda (Avtor)
ID Ducman, Vilma (Avtor) |
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| Datoteke: |  URL - Izvorni URL, za dostop obiščite https://www.sciencedirect.com/science/article/pii/S0272884220330996?via%3Dihub
 PDF - Predstavitvena datoteka, prenos (6,02 MB)
MD5: B99C88D750B5AB32B3090701AD13068A
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| Jezik: | Angleški jezik |
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| Tipologija: | 1.01 - Izvirni znanstveni članek |
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| Organizacija: |  ZAG - Zavod za gradbeništvo Slovenije
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| Povzetek: | The production of alkali-activated materials with excellent mechanical performance requires the use of waterglass, which has a significant carbon footprint. Such materials can have a lower carbon footprint if we replace water glass with alternative activators sourced from waste. In this study, we assessed the suitability of locally available amorphous waste materials (stone wool, glass wool, bottle glass and cathode-ray tube glass) as a source for the preparation of alternative alkali activators. We quantified the amount of silicon and aluminium dissolved in the activator solutions via inductively coupled plasma-optical emission spectrometry. The alternative activators were then used to produce alkali-activated fly ash and slag. The compressive strength values of alkali-activated fly ash specimens upon the addition of NaOH, water glass and the most promising alternative activator were 38.98 MPa, 31.34 MPa and 40.37 MPa, respectively. The compressive strength of slag specimens activated with alternative activators with the highest concentration of dissolved silicon (21 g/L) was, however, 70% higher than the compressive strength of slag specimens activated with only 10 M sodium hydroxide. The compressive strength of slag specimens with the addition of the most promising alternative activator was significantly lower (3.5 MPa) than the compressive strength of those that had been activated by commercial water glass (34.3 MPa). |
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| Ključne besede: | alkalijsko aktivirani materiali, alternativni aktivatorji, lastnosti, alkali activated materials/geopolimers, alternative activators, properties |
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| Status publikacije: | Objavljeno |
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| Verzija publikacije: | Objavljena publikacija |
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| Datum objave: | 09.10.2020 |
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| Založnik: | Ceramurgica s.p.a. |
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| Leto izida: | 2021 |
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| Št. strani: | str. 4864-4873 |
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| Številčenje: | Vol. 47, iss. 4 |
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| PID: | 20.500.12556/DiRROS-16811  |
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| UDK: | 620.1/.2 |
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| ISSN pri članku: | 0272-8842 |
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| DOI: | 10.1016/j.ceramint.2020.10.059 |
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| COBISS.SI-ID: | 32752643 |
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| Avtorske pravice: | © 2020 The Authors. Published by Elsevier Ltd. |
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| Opomba: | E-članek objavljen: 15 February 2021;
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| Datum objave v DiRROS: | 22.08.2023 |
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| Število ogledov: | 572 |
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| Število prenosov: | 319 |
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| Metapodatki: |    |
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