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Title:Evaluation of locally available amorphous waste materials as a source for alternative alkali activators
Authors:ID Koenig, Katja (Author)
ID Traven, Katja (Author)
ID Pavlin, Majda (Author)
ID Ducman, Vilma (Author)
Files:URL URL - Source URL, visit https://www.sciencedirect.com/science/article/pii/S0272884220330996?via%3Dihub
 
.pdf PDF - Presentation file, download (6,02 MB)
MD5: B99C88D750B5AB32B3090701AD13068A
 
Language:English
Typology:1.01 - Original Scientific Article
Organization:Logo ZAG - Slovenian National Building and Civil Engineering Institute
Abstract: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).
Keywords:alkalijsko aktivirani materiali, alternativni aktivatorji, lastnosti, alkali activated materials/geopolimers, alternative activators, properties
Publication status:Published
Publication version:Version of Record
Publication date:09.10.2020
Publisher:Ceramurgica s.p.a.
Year of publishing:2021
Number of pages:str. 4864-4873
Numbering:Vol. 47, iss. 4
PID:20.500.12556/DiRROS-16811 New window
UDC:620.1/.2
ISSN on article:0272-8842
DOI:10.1016/j.ceramint.2020.10.059 New window
COBISS.SI-ID:32752643 New window
Copyright:© 2020 The Authors. Published by Elsevier Ltd.
Note:E-članek objavljen: 15 February 2021;
Publication date in DiRROS:22.08.2023
Views:724
Downloads:389
Metadata:XML DC-XML DC-RDF
:
KOENIG, Katja, TRAVEN, Katja, PAVLIN, Majda and DUCMAN, Vilma, 2021, Evaluation of locally available amorphous waste materials as a source for alternative alkali activators. Ceramics international [online]. 2021. Vol. 47, no. 4, p. 4864–4873. [Accessed 16 March 2025]. DOI 10.1016/j.ceramint.2020.10.059. Retrieved from: https://dirros.openscience.si/IzpisGradiva.php?lang=eng&id=16811
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Record is a part of a journal

Title:Ceramics international
Shortened title:Ceram. int.
Publisher:Ceramurgica s.p.a.
ISSN:0272-8842
COBISS.SI-ID:5822215 New window

Document is financed by a project

Funder:ARRS - Slovenian Research Agency
Project number:J2-9197
Name:Sinteza in karakterizacija alkalijsko aktiviranih pen na osnovi odpadnih materialov

Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:15.10.2020
Applies to:Text and Data Mining valid from 2021-02-01 Version of Record valid from 2020-10-15

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