TY - GEN
T1 - Mixed alkali regional metakaolin-based geopolymer
AU - Sá Ribeiro, Ruy A.
AU - Sá Ribeiro, Marilene G.
AU - Sankar, Kaushik
AU - Kutyla, Gregory P.
AU - Kriven, Waltraud M.
N1 - Publisher Copyright:
© 2017 by The American Ceramic Society.
PY - 2017
Y1 - 2017
N2 - 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.
AB - 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.
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U2 - 10.1002/9781119321811.ch12
DO - 10.1002/9781119321811.ch12
M3 - Conference contribution
AN - SCOPUS:85029893983
T3 - Ceramic Engineering and Science Proceedings
SP - 123
EP - 133
BT - Developments in Strategic Ceramic Materials II - A Collection of Papers Presented at the 40th International Conference on Advanced Ceramics and Composites, ICACC 2016
A2 - Kriven, Waltraud M.
A2 - Wang, Jingyang
A2 - Zhou, Yanchun
A2 - Zhu, Dongming
A2 - Costa, Gustavo
PB - American Ceramic Society
T2 - Developments in Strategic Ceramic Materials II - 40th International Conference on Advanced Ceramics and Composites, ICACC 2016
Y2 - 24 January 2016 through 29 January 2016
ER -