Influence of quartz particle size on the chemical and mechanical properties of autoclaved aerated concrete (II) fracture toughness, strength and micropore

Norifumi Isu, Satoshi Teramura, Hideki Ishida, Takeshi Mitsuda

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

The development of mechanical properties of autoclaved aerated concrete (AAC) block was 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. With increasing tobermorite formation, the compressive strength, Young's modulus and fracture energy increased for the samples made using the coarser quartz, and decreased for the samples made using the finer quartz. After the completion of tobermorite formation, the coarser quartz yielded the higher compressive strength, Young's modulus, fracture energy and crack growth resistance. Using the finer quartz, gyrolite was formed by the decomposition of tobermorite after 64 h autoclaving, reducing the compressive strength and Young's modulus with changes in the micropore size distribution.

Original languageEnglish
Pages (from-to)249-254
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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