EVALUATION OF THE FIRE REACTION OF CONSTRUCTION PRODUCTS BY THE SBI METHOD (SINGLE BURNING ITEM)

Abstract

The reconstruction of Ukraine requires progressive and innovative structural solutions that take into account the requirements of usage safety and fire safety of construction products. One of the mostimportant requirements set for building products and materials used inside buildings on walls and ceilings is the requirement forflammability. In Ukraine, the standard DSTU EN 13501-1 [3] regarding the fire classification of construction products is currently in effect.The standard defines testing methods applied to the evaluated product, as well as criteria for assessing the obtained test results, assigningthem corresponding basic classes of reaction to fire.If it is necessary to assess the behavior of the product at the further stage of a fire, testing should be conducted using the Single BurningItem (SBI) method according to DSTU EN 13823 [5]. The SBI method corresponds to the stage of fire development at which the buildingproduct is exposed to the heat of a single burning item. SBI testing can be conducted independently for technological trials and todetermine the basic operational characteristics of construction products.However, a complete classification of the reaction to fire depending on the class should be complemented by testing according to DSTUEN ISO 11925-2 [4], DSTU EN ISO 1182 [6], or DSTU EN ISO 1716 [7].The article provides a description of the process of conducting SBI method tests, how test results are calculated, what parameters themeasurement system on the SBI test stand calculates, and what they mean in relation toreal fire. The results of studies on some constructionproducts during SBI testing are presented.