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https://repositorio.inpa.gov.br/handle/1/20029| Title: | Mixed alkali regional metakaolin-based geopolymer |
| Authors: | Ribeiro, Ruy A. Sá Sá Ribeiro, Marilene G. Sankar, Kaushik Kutyla, Gregory P. Kriven, Waltraud M. |
| Keywords: | Astm Standards Ceramic Materials Clay Compressive Strength Inorganic Polymers Kaolinite Microscopy, Electron, Scanning Strategic Materials X Ray Diffraction Analysis Amorphous Metakaolin Crystalline Quartz Four-point Metakaolins Mixed Alkali Natural Materials Si/al Ratio Sustainable Construction Geopolymers |
| Issue Date: | 2017 |
| Publisher: | Ceramic Engineering and Science Proceedings |
| metadata.dc.relation.ispartof: | Volume 37, Número 7, Pags. 123-133 |
| Abstract: | In pursuit of sustainable construction, regional natural materials can be used as a base for geopolymer processing. For higher strength achievement, this study uses mixed potassium-sodium geopolymer. Geopolymer was synthesized using metakaolin produced from kaolinite extracted from Amazonian soil, and microscopically compared to a commercial, highly reactive, metakaolin-based geopolymer. Amazonian kaolin was converted into metakaolin by calcination up to 700 °C. X-ray diffraction (XRD) analysis showed the resulting amorphous metakaolin to be 76% pure, with 24% crystalline quartz impurity. Four-point flexural and compressive strength testings of the geopolymer were carried out according to ASTM standards. Scanning electron microscopy was used to investigate the microstructure and the Si/Al ratio. In addition, XRD was used to confirm the formation of geopolymer. © 2017 by The American Ceramic Society. |
| metadata.dc.identifier.doi: | 10.1002/9781119321811.ch12 |
| Appears in Collections: | Trabalhos Apresentados em Evento |
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