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Journal of Materials Science

, Volume 30, Issue 6, pp 1609–1612 | Cite as

Fracture toughness of concretes at high temperature

  • G. Prokopski
Papers

Abstract

The fracture toughness of ordinary and refractory concretes in the range of 20–1300‡C was investigated, and the stress intensity factor, KIc, on three-point bent specimens (according to ASTM E-399 recommendation) determined. With an increase in testing temperature, the stress intensity factor decreases for both concretes. The values of KIc at 20‡C for both concretes are comparable, being equal to 0.64 MNm−3/2 for ordinary concrete, and 0.72 MNm−3/2 for refractory concrete, respectively. At 1100‡C, KIc has a value of 0.043 MNm−3/2 for ordinary concrete, and for the refractory concrete at 1300‡C, KIc=0.34 MNm−3/2. The method presented for predicting the behaviour of concrete at high temperature may be used in engineering practice.

Keywords

Polymer Fracture Toughness Stress Intensity Intensity Factor Stress Intensity Factor 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    A. M. Neville, “Properties of Concrete” (Pittman publishing, London, 1973).Google Scholar
  2. 2.
    U. Schneider and U. Diederichs, Betonwerk & Fertigteil Technik 4 (1981) 223.Google Scholar
  3. 3.
    Comitè Euro-International du Bèton, Bulletin d'Information no. 145, Janvier (1982).Google Scholar
  4. 4.
    ANSI/ASTM, Standard Test Method for Plane-Strain Fracture Toughness of Metallic Materials, E 399-78 (1978).Google Scholar
  5. 5.
    W. F. Brown Jr and J. E. Srawley, “Plain strain crack toughness testing of high strength metallic materials”. ASTM Special technical publication No. 410 (ASTM, Metals Park, Ohio, 1967).Google Scholar

Copyright information

© Chapman & Hall 1995

Authors and Affiliations

  • G. Prokopski
    • 1
  1. 1.Civil Engineering DepartmentTechnical University of RzeszówRzeszówPoland

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