Thermal expansion of ceramic for a building materials

Kazuyuki Kawai, Hideki Ishida, Nozomu Otsuka

Research output: Contribution to journalArticlepeer-review


Control factors of thermal expansion of feldspathic porcelain body for building materials and their control methods are discussed. The additivity can be established between the thermal expansion of feldspathic body consisting of quartz, mullite and glass phase and its amount of constituent phase irrespective of firing time and temperature within an ordinary range of the particle size distribution. However, the actual thermal expansion becomes lower than the value calculated by the method of additivity because of generation of cracks on and vicinity of quartz when its diameter becomes bigger than a certain range of the size. A progress of internal cracks of the porcelain body and its consequent release of stress were clarified in view of changes of the d-spacing of quartz, a decrease of bending strength and an observation of polarizer microscope.

Original languageEnglish
Pages (from-to)305-308
Number of pages4
JournalNippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
Issue number1171
Publication statusPublished - 1993
Externally publishedYes

ASJC Scopus subject areas

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


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