Potassium-Based Geopolymer Composites Reinforced with Chopped Bamboo Fibers
Bamboo is a fast-growing, readily available natural material with tensile specific strength equivalent to that of steel (250–625 MPa/g/cm3). In the pursuit of sustainable construction materials, a composite was made with potassium polysialate siloxo geopolymer as the matrix and randomly oriented cho...
| Autor principal: | Sankar, Kaushik |
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| Outros Autores: | Ribeiro, Ruy A. Sá, Sá Ribeiro, Marilene G., Kriven, Waltraud M., Colombo, Paolo |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Journal of the American Ceramic Society
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/17188 |
| Resumo: |
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Bamboo is a fast-growing, readily available natural material with tensile specific strength equivalent to that of steel (250–625 MPa/g/cm3). In the pursuit of sustainable construction materials, a composite was made with potassium polysialate siloxo geopolymer as the matrix and randomly oriented chopped bamboo fibers (Guadua angustifolia) from the Amazon region as the reinforcement. Four-point flexural strength testing of the geopolymer composite reinforced with bamboo fibers was carried out according to ASTM standard C78/C78M-10e1. Potassium-based metakaolin geopolymer reinforced with 5 wt% (8 vol%) untreated bamboo fibers yielded 7.5 MPa four-point flexural strength. Scanning electron microscopy and optical microscopy were used to investigate the microstructure. In addition, X-ray diffraction was used to confirm the formation of geopolymer. © 2016 The American Ceramic Society |