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Relation between the creep and porosity of refractories

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Conclusions

The creep produced by a given effective load in magnesite-chromite specimens processed from finegrain bodies is governed by the microstructure after firing.

The disruption of the continuity of the material as a result of the development of wide cracks between the pores and the merging of individual pores into a group sharply increases the creep of the specimen at a given effective load until it is destroyed.

An increase in the pore diameter also results in discontinuities in the material and, consequently, in a sharp increase in creep at a lower porosity than in fine-pore specimens.

Since a microfissured structure results in higher creep and at the same time increases the spalling resistance [10, 11], peak values for these characteristics are incompatible in a single product so that they must be determined on the basis of compromise.

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Literature cited

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Authors and Affiliations

  1. Ukrainian Scientific Research Institute of Refractories, Ukraine

    É. V. Degtyareva, I. S. Kainarskii & Ya. Z. Shapiro

Authors
  1. É. V. Degtyareva
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  2. I. S. Kainarskii
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  3. Ya. Z. Shapiro
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Translated from Ogneupory, No. 11, pp. 41–45, November, 1973.

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Degtyareva, É.V., Kainarskii, I.S. & Shapiro, Y.Z. Relation between the creep and porosity of refractories. Refractories 14, 706–710 (1973). https://doi.org/10.1007/BF01285067

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  • DOI: https://doi.org/10.1007/BF01285067

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