University of Oulu

Juho Yliniemi et al 2019 IOP Conf. Ser.: Earth Environ. Sci. 297 012006

Mineral wool waste-based geopolymers

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Author: Yliniemi, Juho1; Luukkonen, Tero1; Kaiser, Anne2;
Organizations: 1Fiber and Particle Engineering Research Unit, University of Oulu, P.O. Box 4300, 90014 Oulu, Finland
2Saint-Gobain Finland Oy, Strömberginkuja 2, 00380 Helsinki, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 0.8 MB)
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Language: English
Published: IOP Publishing, 2019
Publish Date: 2019-09-27


Mineral wools —a general term for stone wool and glass wool— are the most common building insulation materials in the world. The annual amount of mineral wool waste generated in Europe totaled 2.3 Mt in 2010 — including wastes from the mineral wool production and from the construction and demolition industry. Unfortunately, mineral wools are often considered unrecyclable due to their fibrous nature and low density. Thus, the utilisation of post-consumer mineral wool waste in different applications remains low.

Mineral wools have a great potential as geopolymer precursors as they have suitable chemical and mineralogical compositions. As geopolymers can provide significant CO₂ emission reductions compared to traditional Portland cement concretes, using mineral wool waste as geopolymer precursor would be an attractive utilisation path. Here, we show that mineral wool waste can be geopolymerised to form sustainable cements with good mechanical properties. Geopolymerisation of mineral wool waste therefore offers an attractive route for waste valorisation and production of low-CO₂ cements.

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Series: IOP conference series. Earth and environmental science
ISSN: 1755-1307
ISSN-E: 1755-1315
ISSN-L: 1755-1307
Volume: 297
Article number: 012006
DOI: 10.1088/1755-1315/297/1/012006
Host publication: SBE 19 - Emerging Concepts for Sustainable Built Environment 22–24 May 2019, Helsinki, Finland
Conference: Emerging Concepts for Sustainable Built Environment
Type of Publication: A4 Article in conference proceedings
Field of Science: 116 Chemical sciences
215 Chemical engineering
216 Materials engineering
Funding: This research was done under the auspices of Geodesign-project funded by the Business Finland and various companies (Boliden Harjavalta Oy, Destaclean Oy, Fortum Power and Heat Oy, Paroc Group Oy, Saint-Gobain Finland Oy, and Suomen Erityisjäte Oy).
Copyright information: Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Published under licence by IOP Publishing Ltd.