| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Bauxite Residue Valorization and Best Practices
|
| Presentation Title |
The effect of freeze-thaw cycle on mechanical and morphological properties of bauxite residue-based geopolymer |
| Author(s) |
Andrie Harmaji, Reza Jafari, Guy Simard |
| On-Site Speaker (Planned) |
Andrie Harmaji |
| Abstract Scope |
Saguenay is one of the regions that produce aluminium in Canada which simultaneously generated bauxite residue that rich in SiO2 and Al2O3. Both oxides are essential for Geopolymer raw material. However, it cannot be used as standalone raw material since bauxite residue are lack of reactive SiO2. Moreover, implementing geopolymer in Canada is challenging, because previous research reported that geopolymer has lower freeze-thaw durability than Portland cement-based concrete. To address both problems, silica reactive material and chemical admixtures can be added. Therefore, this study aims to analyse the effect of fly ash, glass powder, calcium chloride, and borax addition to strength of geopolymer and morphological assessment after freeze-thaw cycle. The result shown that the materials influenced the compressive strength of the geopolymer. The SEM and FTIR characterization revealed that freeze-thaw cycle alters the bonding formation and fracture pattern of geopolymer. |
| Proceedings Inclusion? |
Planned: TMS Journal: Journal of Sustainable Metallurgy |
| Keywords |
Ceramics, Characterization, Hydrometallurgy |