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Title:The preparation and characterization of low-temperature foams based on the alkali activation of waste stone wool
Authors:ID Pavlin, Majda (Author)
ID Horvat, Barbara (Author)
ID Češnovar, Mark (Author)
ID Ducman, Vilma (Author)
Files:URL URL - Source URL, visit https://www.sciencedirect.com/science/article/pii/S0272884222007830?via%3Dihub
 
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MD5: FCC605EC914C240D862447F38F39D072
 
Language:English
Typology:1.01 - Original Scientific Article
Organization:Logo ZAG - Slovenian National Building and Civil Engineering Institute
Abstract:Waste mineral wool represents a huge amount of construction and demolition waste that is still not adequately returned into the value chain but needs to be landfilled. In the present study, waste stone wool (SW) was evaluated for the preparation of alkali-activated foams. For this purpose SW was milled and sieved below 63 μm, then the activator (sodium silicate) and different amounts of foaming agent (hydrogen peroxide, H2O2), varying between 1 wt% and 3 wt%, were added to the slurry and cured in moulds at an elevated temperature (70 ◦ C) for three days. In this way, foamed, highly porous materials were obtained whose density and mechanical properties were influenced by the amount of foaming agent used. The densities obtained ranged between 1.4 and 0.5 g/cm3, with corresponding mechanical properties of between 12.6 and 1.5 MPa and total porosities in the range 37.8–78.6%, respectively. In the most porous samples with the total porosity of 78.6%, a thermal conductivity of 0.092 W/(m∙K) was confirmed. The study confirmed the suitability of waste mineral wool (in our case SW) as a precursor for alkali-activated foams with potential use in the construction sector or other industrial applications.
Keywords:alkali activation, waste mineral wool, mechanical strength, open access, alkalijska aktivacija, odpadna volna, SEM, XRF, XRD, mehanska trdnost, odprti dostop
Publication status:Published
Publication version:Version of Record
Publication date:11.03.2022
Publisher:Ceramurgica s.p.a.
Year of publishing:2022
Number of pages:str. 1-38
PID:20.500.12556/DiRROS-15830 New window
UDC:620.1/.2
ISSN on article:0272-8842
DOI:10.1016/j.ceramint.2022.03.037 New window
COBISS.SI-ID:100944387 New window
Copyright:© 2022 The Author(s). Published by Elsevier Ltd
Publication date in DiRROS:19.06.2023
Views:889
Downloads:541
Metadata:XML DC-XML DC-RDF
:
PAVLIN, Majda, HORVAT, Barbara, ČEŠNOVAR, Mark and DUCMAN, Vilma, 2022, The preparation and characterization of low-temperature foams based on the alkali activation of waste stone wool. Ceramics international [online]. 2022. P. 1–38. [Accessed 19 March 2025]. DOI 10.1016/j.ceramint.2022.03.037. Retrieved from: https://dirros.openscience.si/IzpisGradiva.php?lang=eng&id=15830
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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:EC - European Commission
Funding programme:H2020
Project number:821000
Name:Mineral wool waste back to loop with advanced sorting, pre-treatment, and alkali activation
Acronym:WOOL2LOOP

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:11.03.2022
Applies to:Text and Data Mining valid from 2022-06-01 Version of Record valid from 2022-03-11

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