Mineral wool waste-based geopolymers
|Author:||Yliniemi, Juho1; Luukkonen, Tero1; Kaiser, Anne2;|
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
|Online Access:||PDF Full Text (PDF, 0.8 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2019092730121
|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.
IOP conference series. Earth and environmental science
SBE 19 - Emerging Concepts for Sustainable Built Environment 22–24 May 2019, Helsinki, Finland
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
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).
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