Majda Pavlin (Author), Barbara Horvat (Author), Vilma Ducman (Author)

Abstract

Mineral wool is a widely used insulation material and one of the largest components of construction and demolition waste, yet it mainly ends up in landfills. In this work, we explored the potential recycling of waste stone wool in the pilot production of alkali-activated façade panels. The current work shows mechanical properties, SEM-EDS and mercury intrusion porosimetry analyses for three different mix designs used for the preparation of façade panels. They are all composed of waste stone wool and differ in the amount of co-binders (local slag, lime, metakaolin and/or fly ash) selected by the preliminary studies. In this study, co-binders were added to increase early strength and improve the mechanical properties and freeze-thaw resistance. The mechanical properties of each were measured up to 256 days, different durability tests were executed, and, by evaluating the mechanical properties, microstructure and workability of the mortar, the most suitable mix was selected to be used for pilot production. In addition, the leaching test of the selected mixture showed no exceeded toxic trace elements and therefore got classified as non-hazardous waste after its use.

Keywords

alkalijska aktivacija;odpadna volna;SEM;XRF;XRD;mehanska trdnost;odlagališče jeklarske žlindre;alkali activation;waste mineral wool;mechanical strength;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: ZAG - Slovenian National Building and Civil Engineering Institute
Publisher: John Wiley & Sons, Ltd
UDC: 620.1/.2
COBISS: 92496131 Link will open in a new window
ISSN: 1744-7402
Views: 500
Downloads: 222
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Other data

Secondary language: Slovenian
Secondary keywords: alkalijska aktivacija;odpadna volna;SEM;XRF;XRD;mehanska trdnost;odlagališče jeklarske žlindre;
Source comment: Nasl. z nasl. zaslona; Opis vira z dne 7. 1. 2022;
Pages: str. 1227-1234
Volume: ǂVol. ǂ19
Issue: ǂissue ǂ3
Chronology: May 2022
DOI: 10.1111/ijac.13998
ID: 19326503