Szukana fraza: [Abstrakt = "Fires in road tunnels pose a great threat to the people present and to the structure of the tunnel itself. When a fire breaks out in a tunnel, the confined space of a tunnel leads to very fast development. The temperature increase is very rapid, especially in case of a fire of a tanker full of gasoline. For exactly such case the most used in Europe timetemperature curve was developed – the RWS curve. The article describes a fire protection system for the requirements of RWS fire, dedicated for cut\-and\-cover tunnels made of deep\-profiled steel corrugated plates. The study considered SuperCor® structure, which corrugations are 140 mm deep. Because of that, filling the whole corrugation with thermal insulation would take too much material and be uneconomical. The proposed solution assumes installation of a steel lath on which a tens of millimetres thick fire protection is sprayed\-on. The effectiveness of the fire protection has been confirmed by fire tests. 55 mm thick insulation material – Cafco FENDOLITE®MII – was able to keep the steel temperature below 300 °C for 2 hours and below 450 °C for 4 hours. Additional mechanical tests on the proposed fire protection showed that the protection can withstand fatigue from the passing vehicles in road tunnels and in railway tunnels – with the exception of HST."]

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