Fire resistance is the ability of building structures to maintain their operational functions under the influence of high fire temperatures. The fire resistance of building structures is characterized by the fire resistance limit, which is expressed in the number of minutes from the beginning of the test until one or several signs of limit states (normalized for a given structure) appear: loss of load-bearing capacity (R) of a building structure during a fire corresponds to its collapse or the occurrence of a limit deflection or the rate of growth of limit deformations. loss of integrity (E) is manifested by the formation of through holes or cracks in the structure, through which the back (unheated) floor.
The tests were conducted in conditions simulating a fire. The wall assembled from the “Cottage Plus” SIP panel with interior plasterboard finishing was exposed to an open fire with a combustion temperature of over 900°C for an hour (60 minutes). The tests were successful. The test result was REI 60. There was no loss of load-bearing capacity, integrity or thermal insulation capacity. The value of the fire resistance limit of building structures was determined by testing in accordance with DSTU B V.1.1-4, according to the standards for test methods for fire resistance of building structures. The tests were carried out by independent specialists of the laboratory of building materials and structures “TEST”.
