Mixed alkali regional metakaolin-based geopolymer

Ruy A. Sá Ribeiro, Marilene G. Sá Ribeiro, Kaushik Sankar, Gregory P. Kutyla, Waltraud M. Kriven

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.

Original languageEnglish (US)
Title of host publicationDevelopments in Strategic Ceramic Materials II - A Collection of Papers Presented at the 40th International Conference on Advanced Ceramics and Composites, ICACC 2016
EditorsWaltraud M. Kriven, Jingyang Wang, Yanchun Zhou, Dongming Zhu, Gustavo Costa
PublisherAmerican Ceramic Society
Pages123-133
Number of pages11
Edition7
ISBN (Electronic)9781119274995, 9781119320135, 9781119320227, 9781119320241, 9781119321705, 9781119321743, 9781119321781
DOIs
StatePublished - 2017
EventDevelopments in Strategic Ceramic Materials II - 40th International Conference on Advanced Ceramics and Composites, ICACC 2016 - Daytona Beach, United States
Duration: Jan 24 2016Jan 29 2016

Publication series

NameCeramic Engineering and Science Proceedings
Number7
Volume37
ISSN (Print)0196-6219

Other

OtherDevelopments in Strategic Ceramic Materials II - 40th International Conference on Advanced Ceramics and Composites, ICACC 2016
Country/TerritoryUnited States
CityDaytona Beach
Period1/24/161/29/16

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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