THEORETICAL MODEL OF RESISTANCE OF HIGH-STRENGTH, MODIFIED AND SPUN CONCRETE IN FIRE

Authors

  • Ivan Ivanovich Palevoda University of Civil Protection of the Ministry for Emergency Situations of the Republic of Belarus
  • Denis Sergeevich Nekhan University of Civil Protection of the Ministry for Emergency Situations of the Republic of Belarus

DOI:

https://doi.org/10.36773/1818-1112-2023-131-2-52-61

Keywords:

fire resistance of concrete, compressive strength of concrete, high-temperature heating, coefficient allowing for decrease of characteristic strength of concrete, high-strength concrete, modified concrete, spun concrete

Abstract

For reinforced concrete structures the fire resistance is an indicator that determines the area of their application in construction and characterizes the period of time when the structure retains its load-bearing and enclosing functions in case of fire. For theoretical determination of the fire resistance it is necessary to know the main characteristics of materials in normal conditions and the nature of their changes during high-temperature heating, in particular, when solving the strength problem of fire resistance – physical and mechanical properties.

This paper presents a theoretical model of high-strength, modified and spun concrete resistance in fire, the use of which allows to predict the behavior of structures made of it in fire and to estimate their fire resistance. This model was developed on the basis of a set of laboratory and theoretical studies of high-strength, modified and spun concrete under high-temperature heating.

Author Biographies

Ivan Ivanovich Palevoda, University of Civil Protection of the Ministry for Emergency Situations of the Republic of Belarus

PhD in Engineering, Associate Professor – chairman. Head of the State Educational Institution "University of Civil Protection of the Ministry for Emergency Situations of the Republic of Belarus", Minsk, Republic of Belarus.

Denis Sergeevich Nekhan, University of Civil Protection of the Ministry for Emergency Situations of the Republic of Belarus

PhD in Engineering, Associate Professor of the State Educational Institution "University of Civil Protection of the Ministry for Emergency Situations of the Republic of Belarus", Minsk, Republic of Belarus.

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Published

2023-11-02

How to Cite

(1)
Palevoda, I. I.; Nekhan, D. S. THEORETICAL MODEL OF RESISTANCE OF HIGH-STRENGTH, MODIFIED AND SPUN CONCRETE IN FIRE. Вестник БрГТУ 2023, 52-61.

Issue

No. 2(131) (2023): Vestnik of Brest State Technical University

Section

Civil and Environmental Engineering

License

Copyright (c) 2023 Brest State Technical University

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