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Fracture toughness of concretes at high temperature

Prokopski, G.

The fracture toughness of ordinary and refractory concretes in the range of 20 deg C to 1300 deg C was investigated, and the stress intensity factor, K_Ic, in three-point bent specimens (according to ASTM E-399 recommmendation) determined. With an increase in testing temperature, the stress intensity factor decreases for both concretes. The values of K_Ic at 20 deg C for both concretes are comparable, being equal to 0.64 MNm^-1.5 for ordinary concrete, and 0.72 MNm^-1.5 for refractory concrete, respectively. At 1100 deg C, K_Ic has a value of 0.043 MNm^-1.5. The method presented for predicting the behaviour of concrete at high temperature may be used in engineering practice.

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Fracture toughness of concretes at high temperature

Prokopski, G.

The fracture toughness of ordinary and refractory concretes in the range of 20 deg C to 1300 deg C was investigated, and the stress intensity factor, K_Ic, in three-point bent specimens (according to ASTM E-399 recommmendation) determined. With an increase in testing temperature, the stress intensity factor decreases for both concretes. The values of K_Ic at 20 deg C for both concretes are comparable, being equal to 0.64 MNm^-1.5 for ordinary concrete, and 0.72 MNm^-1.5 for refractory concrete, respectively. At 1100 deg C, K_Ic has a value of 0.043 MNm^-1.5. The method presented for predicting the behaviour of concrete at high temperature may be used in engineering practice.

Fracture toughness of concretes at high temperature

Prokopski, G.

The fracture toughness of ordinary and refractory concretes in the range of 20 deg C to 1300 deg C was investigated, and the stress intensity factor, K_Ic, in three-point bent specimens (according to ASTM E-399 recommmendation) determined. With an increase in testing temperature, the stress intensity factor decreases for both concretes. The values of K_Ic at 20 deg C for both concretes are comparable, being equal to 0.64 MNm^-1.5 for ordinary concrete, and 0.72 MNm^-1.5 for refractory concrete, respectively. At 1100 deg C, K_Ic has a value of 0.043 MNm^-1.5. The method presented for predicting the behaviour of concrete at high temperature may be used in engineering practice.

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Titel:

Fracture toughness of concretes at high temperature

Weitere Titelangaben:

Bruchfestigkeit von Beton bei hoher Temperatur

Beteiligte:

Prokopski, G. (Autor:in)

Erschienen in:

Journal of Materials Science ; 30 ; 1609-1612

Erscheinungsdatum:

1995

Format / Umfang:

4 Seiten, 4 Bilder, 2 Tabellen, 5 Quellen

ISSN:

DOI:

https://doi.org/10.1007/BF00375272

Medientyp:

Aufsatz (Zeitschrift)

Format:

Print

Sprache:

Englisch

Schlagwörter:

Feuerbeton , Beton , Bruchzähigkeit , Hochtemperatur , Spannungsintensitätsfaktor , Empfehlung , feuerfestes Erzeugnis

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