Mechanisms of Incipient Chemical Reaction between Ca(OH)2and SiO2under Moderate Mechanical Stressing

Tomoyuki Watanabe, Tetsuhiko Isobe, Mamoru Senna

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

The structure of mechanically induced precursor in an amorphous state between Ca(OH)2and SiO2was determined by solid state MAS and CP/MAS29SiNMR spectroscopies, and the changes in the behavior of crystallization by linear heating were studied by X-ray diffractometry. A large broad Q0peak due to the short-range order of hydrated calcium silicates appeared in the29SiNMR spectra of mechanically induced precursors. The formation of the new ordering is confined in the near-surface region of SiO2particles, as confirmed by comparing MAS and CP/MASNMR spectra. When the amorphous precursor obtained above was subsequently heated, a rapid solid state reaction led to single phasedα-CaSiO3as the final product.

Original languageEnglish
Pages (from-to)284-289
Number of pages6
JournalJournal of Solid State Chemistry
Volume130
Issue number2
DOIs
Publication statusPublished - 1997 May 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Mechanisms of Incipient Chemical Reaction between Ca(OH)<sub>2</sub>and SiO<sub>2</sub>under Moderate Mechanical Stressing'. Together they form a unique fingerprint.

  • Cite this