| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Characterization of Minerals, Metals and Materials 2022
|
| Presentation Title |
Development of Metakaolin Based Geopolymer Mortar and the Flue Gas Desulfurization (FGD) Waste |
| Author(s) |
Leandro Oliveira, Afonso Rangel Azevedo, Markssuel Marvila, Carlos Mauricio Vieira, Niander Cerqueira, Sergio Neves Monteiro |
| On-Site Speaker (Planned) |
Afonso Rangel Azevedo |
| Abstract Scope |
It is estimated that the cement industry is responsible for 5-7% of all CO2 generated in the world. However, alternatives to Portland cement have been researched, with emphasis on geopolymers, which are materials obtained through the reaction of a source rich in aluminosilicate, together with an alkaline activator. The aim of this study is the development of metakaolin based geopolymer mortar and the flue gas desulfurization (FGD) waste, alkali activated with hydroxide and sodium silicate for structural reinforcement. Initially, samples of geopolymers, with different dosages, were prepared and tested in compression after curing at ambient temperature and 90ºC for 14 days. The results showed that the geopolymer made from 90% metakaolin and 10% FGD residue obtained the higher compressive strength of 19.39 MPa. This preliminary data revealed that this geopolymer can serve as a potential material for civil construction due to its availability, affordability, compressive strength values and environmental sustainability. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, |