Assessment of fire resistance of fireproof reinforced concrete structures

Authors

DOI:

https://doi.org/10.15587/1729-4061.2022.266219

Keywords:

fire resistance of structure, heat engineering calculation, reinforced concrete structures, fire retardant coating, fire resistance assessment

Abstract

A finite-element model for the heat engineering calculation of fireproof reinforced concrete slab has been built, which is designed to assess the fire resistance of unprotected reinforced concrete structures. A feature of the model is the correct choice of types of heat transfer in the cavities of reinforced concrete ceilings. An algorithm that includes experimental and calculation procedures in determining the fire resistance of unprotected reinforced concrete structures has been applied. The initial, boundary conditions for the construction of the model were formulated; the thermophysical properties of materials were substantiated. Thermal calculation of fireproof multi-hollow reinforced concrete ceiling under conditions of fire was carried out. The adequacy of the developed finite-element model was checked. A satisfactory convergence of experimental and calculated temperatures with an accuracy of 10 % was established, which would suffice for the engineering calculations.

The model built makes it possible to assess the fire resistance of unprotected reinforced concrete structures. Thus, there is reason to argue that the model constructed can partially or completely replace the experimental assessment of fire resistance, provided that the construction and setting of the model parameters are correct

Author Biographies

Andrii Kovalov, National University of Civil Defence of Ukraine

PhD, Senior Researcher

Roman Purdenko, Private Enterprise “ProjectBudStar”

Chief Project Engineer

Yurii Otrosh, National University of Civil Defence of Ukraine

Doctor of Technical Sciences, Professor

Department of Fire Prevention in Settlements

Vitalii Tоmеnkо, Cherkassy institute of Fire Safety named after Сhernobyl Heroes of National University of Civil Protection of Ukraine

PhD, Associate Professor

Department of Higher Mathematics and Information Technologies

Nina Rashkevich, National University of Civil Defence of Ukraine

PhD

Department of Fire Prevention in Settlements

Eduard Shcholokov, National University of Civil Defence of Ukraine

Department of Fire Prevention in Settlements

 

Mykola Pidhornyy, Cherkasy State Technological University

PhD, Associate Professor

Department of Cars and Technologies of their Operation

Nina Zolotova, O. M. Beketov National University of Urban Economy in Kharkiv

PhD, Associate Professor

Department of Construction Technology and Building Materials

Oleg Suprun, O. M. Beketov National University of Urban Economy in Kharkiv

PhD

Department of Construction Technology and Building Materials

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Assessment of fire resistance of fireproof reinforced concrete structures

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Published

2022-10-30

How to Cite

Kovalov, A., Purdenko, R., Otrosh, Y., Tоmеnkо V., Rashkevich, N., Shcholokov, E., Pidhornyy, M., Zolotova, N., & Suprun, O. (2022). Assessment of fire resistance of fireproof reinforced concrete structures. Eastern-European Journal of Enterprise Technologies, 5(1 (119), 53–61. https://doi.org/10.15587/1729-4061.2022.266219

Issue

Vol. 5 No. 1 (119) (2022): Engineering technological systems

Section

Engineering technological systems

License

Copyright (c) 2022 Andrii Kovalov, Roman Purdenko, Yurii Otrosh, Vitalii Tоmеnkо, Nina Rashkevich, Eduard Shcholokov, Mykola Pidhornyy, Nina Zolotova, Oleg Suprun

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