New Metakaolin-Based Geopolymers with the Addition of Different Types of Waste Stone Powder

0544883 - ÚSMH 2022 RIV CH eng J - Journal Article
Perná, Ivana - Novotná, Martina - Řimnáčová, Daniela - Šupová, Monika
New Metakaolin-Based Geopolymers with the Addition of Different Types of Waste Stone Powder.
Crystals. Roč. 11, č. 8 (2021), č. článku 983. ISSN 2073-4352. E-ISSN 2073-4352
Grant - others:AV ČR(CZ) StrategieAV21/23
Program: StrategieAV
Institutional support: RVO:67985891
Keywords : geopolymer * waste stone powder * recycling * characterization
OECD category: Environmental sciences (social aspects to be 5.7)
Impact factor: 2.670, year: 2021
Method of publishing: Open access
https://www.mdpi.com/2073-4352/11/8/983

The search for new alternative raw materials and their subsequent use supports the sustainability of natural resources. This article describes the use of waste stone powder (WSP) in geopolymer synthesis. Five different types of WSP (feldspar, limestone, marlstone, dolomite, marble) were comprehensively characterized and their influence on the resulting properties (especially mechanical and textural properties, setting time and structure) of metakaolin-based geopolymer composites was investigated. Their comparison with a geopolymer composite containing only quartz sand has revealed that WSP additions have a small but positive effect on the mechanical or textural properties of geopolymers. Moreover, setting time measurements have shown that waste stone powders can be used as an accelerator of geopolymer reaction solidification. The results demonstrated that the mentioned types of WSP, previously landfilled, can be used for the preparation of geopolymers. This can help reduce the environmental burden.
Permanent Link: http://hdl.handle.net/11104/0321682