Chapter 4. Recommended Additional Material Data for Evaluating the Mechanical Strength of Refractories

  1. William J. Smothers
  1. Charles A. Schacht

Published Online: 26 MAR 2008

DOI: 10.1002/9780470310465.ch4

Application of Refractories: Ceramic Engineering and Science Proceedings, Volume 9, Issue 1/2

Application of Refractories: Ceramic Engineering and Science Proceedings, Volume 9, Issue 1/2

How to Cite

Schacht, C. A. (1988) Recommended Additional Material Data for Evaluating the Mechanical Strength of Refractories, in Application of Refractories: Ceramic Engineering and Science Proceedings, Volume 9, Issue 1/2 (ed W. J. Smothers), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470310465.ch4

Author Information

  1. Schacht Consulting Services, 12 Holland Rd., Pittsburgh, PA 15235

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1988

ISBN Information

Print ISBN: 9780470374764

Online ISBN: 9780470310465

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Keywords:

  • thermal restraints;
  • compressive stress;
  • evaluating;
  • dimensional expansion;
  • compressive

Summary

Thermomechanical studies of various refractory systems have shown that thermal expansion stresses from transient stresses and thermal restraints are more significant than dead load stresses from material and equipment weight. This implies that ultimate compressive strain and ultimate tensile strain are more important in evaluating material strength than ultimate compressive stress and ultimate tensile stress. Compressive stress-strain data on a range of refractory materials has shown that ultrasonic data is not reliable in evaluating the elastic modulus and the data can not be used to predict ultimate tensile or compressive strain. Therefore, stressstrain curves are required to predict ultimate tensile stress, ultimate tensile strain, and ultimate compressive stress and ultimate tensile strain, and ultimate compressive stress and ultimate compressive strain. It is recommended that the ultimate strain material property be adopted by the refractory manufacturing and user community to assist in selecting refractory materials, and an ASTM standard be established for evaluating the ultimate strain of refractory materials.