Çelik kirişler için farklı endüstriyel intumesan boyaların yangından koruma performansları

This study covers comparison of fire protection performance efficiencies of two commercially available different intumescent coatings on two 1-meters steel beams which have S275 steel grade and UPN 200 steel sections for 2 hours by following ISO 834 fire curve in a furnace in Turkish Standards Institute (TSE) laboratory. Each beam was insulated with different industrial intumescent coatings to explore the efficiency of these intumescent coatings. Hence, all variables containing workmanship quality, period of application of intumescent coatings, steel grade, steel sections, furnace type, fire type and period of the experiment were kept constant except the type of intumescent coatings. First intumescent coating which is the Product A complies to BS 476-20,22 and EN 13381-8 and has an ISO Standards certificate. The Product B complies to ASTM UL-94 and EN 13381-8 and has a TSE certificate. 12 thermocouples were applied on each steel beams before the intumescent coatings performed to get temperature-time curves to determine the time to reach the critical temperatures of steel beams which were isolated. Fin EC software was used for the preliminary analysis to determine the critical temperatures and ABAQUS software was used to define the critical temperatures of each insulated steel beam and heat transfer analysis to compare with the temperature-time curves with experimental ones to have a better understanding of intumescent coating's thermal barrier duty in a case of ISO 834 fire type.