Journal
CRYSTALS
Volume 11, Issue 8, Pages -Publisher
MDPI
DOI: 10.3390/cryst11080983
Keywords
geopolymer; waste stone powder; recycling; characterization; mechanical properties; textural properties
Funding
- Czech Academy of Sciences
- research program VP23-City as a Laboratory of Change: Historical Heritage and Place for Safe and Quality Life [A1_FCHT_2021_006]
- [67985891]
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This study investigated the use of waste stone powder (WSP) in geopolymer synthesis, finding that WSP additions have a small but positive effect on the properties of geopolymers and can serve as an accelerator for geopolymer reaction solidification. It demonstrated that previously landfilled WSP can be utilized in geopolymers, contributing to environmental burden reduction.
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.
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