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Naslov:Influence of microwaves in the early stage of alkali activation on the mechanical strength of alkali-activated materials
Avtorji:ID Horvat, Barbara (Avtor)
ID Pavlin, Majda (Avtor)
ID Ducman, Vilma (Avtor)
Datoteke:URL URL - Izvorni URL, za dostop obiščite https://www.sciencedirect.com/science/article/pii/S0272884222045461?via%3Dihub
 
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Jezik:Angleški jezik
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:Logo ZAG - Zavod za gradbeništvo Slovenije
Povzetek:This study focuses on the influence of microwave irradiation dosimetry on alkali-activated slurry in its early stages. The impact on the chemistry and mineralogy along with the mechanical properties were evaluated by changing the power of microwaves and their duration of exposure. This influenced the dissolution of amorphous content, diffusion, and self-assembly into an aluminosilicate network. The precursors used in this study were metakaolin, a non-waste material commonly used in geopolymerisation technology, and local fly ash and ladle furnace slag as secondary materials. Furthermore, they were chemically and mineralogically analysed, and their mixtures with NaOH and Na-water glass provided the optimal ratio of the amount of elements obtained using the pre-calculation approach. However, the potential extra addition of water was experimentally determined to allow complete wetting of the material and solid workability during moulding. Using Fourier-transform infrared spectroscopy, the influence of water was further investigated in alkali-activated slag and fly ash irradiated with microwaves, which resulted in the highest values of mechanical strength in the dosimetry-mapping part of the analysis. In addition to the time dependence of the expected mechanical strength on the ageing of the alkali- activated material, the synthesised material exhibited a significant dependence on the dose of microwave irra- diation, which was different for every precursor as well as every mixture with different chemistries.
Ključne besede:odpadni material, alkalijska aktivacija, obsevanje z mikrovalovi, mehanska trdnost, waste material, alkali activation, microwave irradiation, mechanical strength
Status publikacije:Objavljeno
Verzija publikacije:Objavljena publikacija
Datum objave:14.12.2023
Založnik:Ceramurgica s.p.a.
Leto izida:2023
Št. strani:str. 24246-24258
Številčenje:part B, iss. 14
PID:20.500.12556/DiRROS-16697 Novo okno
UDK:620.1/.2
ISSN pri članku:0272-8842
DOI:10.1016/j.ceramint.2022.12.133 Novo okno
COBISS.SI-ID:134219267 Novo okno
Avtorske pravice:© 2023 The Authors. Published by Elsevier Ltd
Opomba:Available online 14 December 2022;
Datum objave v DiRROS:12.07.2023
Število ogledov:942
Število prenosov:667
Metapodatki:XML DC-XML DC-RDF
:
HORVAT, Barbara, PAVLIN, Majda in DUCMAN, Vilma, 2023, Influence of microwaves in the early stage of alkali activation on the mechanical strength of alkali-activated materials. Ceramics international [na spletu]. 2023. Vol. part B, no. 14, p. 24246–24258. [Dostopano 19 marec 2025]. DOI 10.1016/j.ceramint.2022.12.133. Pridobljeno s: https://dirros.openscience.si/IzpisGradiva.php?lang=slv&id=16697
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Gradivo je del revije

Naslov:Ceramics international
Skrajšan naslov:Ceram. int.
Založnik:Ceramurgica s.p.a.
ISSN:0272-8842
COBISS.SI-ID:5822215 Novo okno

Gradivo je financirano iz projekta

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:J2-3035
Naslov:Sinteza alkalijsko aktiviranih materialov s pomočjo mikrovalov
Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:Z2-3199
Naslov:Imobilizacija in izluževanje škodljivih elementov v sledovih iz alkalijsko aktiviranih materialov pripravljenih iz lokalno pridobljenih odpadnih in stranskih produktov
Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:P2-0273
Naslov:Gradbeni objekti in materiali

Licence

Licenca:CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
Opis:Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.
Začetek licenciranja:14.01.2023
Vezano na:Text and Data Mining valid from 2023-07-01 Version of Record valid from 2023-01-14

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