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- W2556696592 abstract "The procedure of estimation of impact of long-term operation of various constructions on the main properties of intumescent flame retardant coatings is offered. It is based on an experimental evaluation of change of intumescence expansion rate of coatings and their thermal decomposition rate depending on the operating time and consideration of these indicators in mathematical modeling and design of fire protection. Tests of this procedure is carried out on the example of SGK-2 compound applied on the samples which passed the accelerated climatic tests for the operating period of 5, 10, 15, 20 and 25 years. Definition of intumescence and thermal decomposition indices, the main physical and mechanical properties of the coating was carried out. To assess the dynamics of changes of intumescence value it was used the test procedure with samples placed inside gauge tubes made of the heat-resistant glass which were heated in muffle furnace. In addition samples were tested on the installation (stand) of radiant heating. On the basis of conducted researches it was determined the decrease tendency of intumescence expansion rate and, respectively, flame retardant efficiency of coating during long-term operation of protected metal constructions. The methodology of accounting of such influence based on the obtained experimental data during mathematical modeling and design of fire protection due to previously developed and tested calculation methods. On the basis of carried out experiments and calculations it was determined that decrease of flame retardant efficiency of SGK-2 coating, characterized by time while the protected steel construction is heated to the critical temperature (500 °C), amount to 21-25 % over the lifetime of 25 years. The obtained results showed expediency and possibility of creation of a common approach to assessment of influence of long-term operation of constructions on flame retardant efficiency of intumescent coatings and considering of this factor in practice of researches and design of fire protection." @default.
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- W2556696592 date "2016-01-01" @default.
- W2556696592 modified "2023-09-24" @default.
- W2556696592 title "Methodology and results of estimation of the influence of structures long-term exploitation on basic properties of the intumescent flame-retardant coatings" @default.
- W2556696592 doi "https://doi.org/10.18322/pvb.2016.25.01.9-16" @default.
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