Influence of quartz particle size on the chemical and mechanical properties of autoclaved aerated concrete (I) tobermorite formation

Norifumi Isu, Hideki Ishida, Takeshi Mitsuda

Research output: Contribution to journalArticlepeer-review

68 Citations (Scopus)

Abstract

The chemical reactions in the hardening of autoclaved aerated concrete (AAC) block were investigated using ground quartz of different particle sizes. The samples were prepared at 180 °C under saturated steam pressure for various times from 0.5 to 64 h Autoclaving for 0.5 h yielded 1.1-nm tobermorite, suggesting that the utilization of finer quartz has the advantage of reducing the processing time. The tobermorite formed had higher crystallinity with coarser quartz. The degree of reaction of finer quartz was higher than that of coarser quartz after shorter periods of autoclaving, but lower after longer periods of autoclaving. Gyrolite was formed after 64h when finer quartz was used.

Original languageEnglish
Pages (from-to)243-248
Number of pages6
JournalCement and Concrete Research
Volume25
Issue number2
DOIs
Publication statusPublished - 1995 Feb

ASJC Scopus subject areas

  • Building and Construction
  • Materials Science(all)

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