Efficiency of adding very fine silica in high-silica and corundum ceramic concrete technology. Part 2

Efficiency of adding very fine silica in high-silica and corundum ceramic concrete technology.... Results are provided for comparative evaluation of the properties of pressed specimens of a matrix system and ceramic concrete specimens prepared on the basis of bauxite with very fine quartz glass and quartz sand (VFQG and VFQS), and also the thermal expansion of castings based on a suspension of quartz sand, bauxite and bauxite ceramic concrete. It is established that high-silica molded and unmolded ceramic concretes prepared on a basis of bauxite VFQG (85%) and VFQS (15%) have improved physicomechanical properties. After firing at 1150 and 1420°C their open porosity is 16 – 18% and the ultimate strength in compression is 95 – 125 MPa. Their temperature for the onset of softening is above 1570°C and higher than 1650°C (for compositions containing SiC). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Refractories and Industrial Ceramics Springer Journals

Efficiency of adding very fine silica in high-silica and corundum ceramic concrete technology. Part 2

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Publisher
Springer US
Copyright
Copyright © 2009 by Springer Science+Business Media, Inc.
Subject
Materials Science; Characterization and Evaluation of Materials; Materials Science, general; Ceramics, Glass, Composites, Natural Materials
ISSN
1083-4877
eISSN
1573-9139
D.O.I.
10.1007/s11148-009-9152-5
Publisher site
See Article on Publisher Site

Abstract

Results are provided for comparative evaluation of the properties of pressed specimens of a matrix system and ceramic concrete specimens prepared on the basis of bauxite with very fine quartz glass and quartz sand (VFQG and VFQS), and also the thermal expansion of castings based on a suspension of quartz sand, bauxite and bauxite ceramic concrete. It is established that high-silica molded and unmolded ceramic concretes prepared on a basis of bauxite VFQG (85%) and VFQS (15%) have improved physicomechanical properties. After firing at 1150 and 1420°C their open porosity is 16 – 18% and the ultimate strength in compression is 95 – 125 MPa. Their temperature for the onset of softening is above 1570°C and higher than 1650°C (for compositions containing SiC).

Journal

Refractories and Industrial CeramicsSpringer Journals

Published: Jul 24, 2009

References

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