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Information × Registration Number 0223U005239, 0123U101399 , R & D reports Title The Improvement of the Experimental and Calculation Basis for Evaluating Fire Resistance of Reinforced Concrete Building Structures During Tests of their Small-Sized Fragments popup.stage_title Head Nuianzin Oleksandr M., Кандидат технічних наук Registration Date 19-12-2023 Organization Cherkasy Fire Safety Institute named after Heroes of Chernobyl, National University of Civil Protection of Ukraine popup.description2 The purpose of this work is to improve the methodological and scientific basis for predicting the behavior of reinforced concrete building structures under fire conditions based on the experimental and calculation method of testing samples without load. The object of research is the processes of heat and mass transfer and the parameters of the stress-strain state of building structures during the fire resistance test. The subject of research is methods of estimation of a class of fire resistance of building designs on the basis of tests of their small-sized fragments. Theoretical studies were carried out on the basis of systems of differential equations of continuous media such as the Navier-Stokes equations, equations of thermal conductivity and the stress-strain state of reinforced concrete under conditions of heating during a fire, Fourier equations of thermal conductivity. To solve the equations, the method of finite (boundary) elements, the method of finite differences, optimization methods, as well as methods of statistical processing of experimental and calculated data were used in the work. Experimental studies were performed with the help of the created universal small-sized fire test facility.An analysis of the knowledge obtained in previous studies and the selection of ways to improve the installation were carried out, computer modeling of heat and mass transfer during the fire resistance test in a small-sized fire installation, samples for conducting fire tests were created. Also filed and received 2 utility model patents. In addition, a mock-up of a fire furnace was created, which reflects the processes of heat and mass exchange in its chamber and can be used for educational and scientific purposes. Product Description popup.authors Yelahin Heorhii I Aleksieieva Olena S Zaika Natalia P Kopytin Dmytro Kryshtal Mykola A NEKORA OLHA Perehin Alina V Pozdieiev Serhii V. Stepanenko Vitaliy O popup.nrat_date 2023-12-19 Close