Hydrothermal solidification of green tuff / tobermorite composites

Midori Takagi, Hirotaka Maeda, Hideki Ishida Emile

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Mesoporous green tuff / tobermorite composites were synthesized by hydrothermal treatment of powder compacts consisting of waste green tuff and slaked lime. XRD results showed that chlorite, the mineral responsible for the green coloration of green tuff, remained after hydrothermal treatment. Tobermorite formed as a result of a reaction between the quartz inherent in green tuff and slaked lime. The formation of tobermorite led to an increase in bending strength, reaching 12 MPa after 10 h of hydrothermal treatment, as well as to an increase in specific surface area and mesopore volume. The composite adsorbed a greater quantity of water vapour and ammonia gas than waste green tuff.

Original languageEnglish
Pages (from-to)1221-1224
Number of pages4
JournalNippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
Volume117
Issue number1371
Publication statusPublished - 2009 Nov

Keywords

  • Composite
  • Green tuff
  • Hydrothermal solidification
  • Mesoporous material
  • Tobermorite

ASJC Scopus subject areas

  • Chemistry(all)
  • Ceramics and Composites
  • Materials Chemistry
  • Condensed Matter Physics

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