Âñåðîññèéñêèé íàó÷íî-èññëåäîâàòåëüñêèé èíñòèòóò ïðîòèâîïîaeàðíîé îáîðîíû Ì×Ñ Ðîññèè (Ðîññèÿ, 143903, Ìîñêîâñêàÿ îáë., ã. Áàëàøèõà, ìêð. ÂÍÈÈÏÎ, 12) ÐÅÇÞÌÅ Ââåäåíèå.  ñîîòâåòñòâèè ñ òðåáîâàíèÿìè ÑÏ 2.13130.2012 (ï. 5.4.3) äîïóñêàåòñÿ ïðèìåíåíèå íåçàùèùåííûõ ñòàëüíûõ êîíñòðóêöèé, åñëè òðåáóåìûé ïðåäåë èõ îãíåñòîéêîñòè ñîñòàâëÿåò R 15 (RE 15, REI 15). Îäíàêî ôàêòè÷åñêèé ïðåäåë îãíåñòîéêîñòè çàâèñèò êàê îò ïðèâåäåííîé òîëùèíû êîíñòðóêöèè, òàê è îò òåìïåðàòóðíîãî ðåaeèìà ïîaeàðà ("öåëëþëîçíûé" èëè óãëåâîäîðîäíûé). Ðàáîòà ïîñâÿùåíà ðàñ÷åòíîé îöåíêå ôàêòè÷åñêîãî ïðåäåëà îãíåñòîéêîñòè íåçàùèùåííûõ ñòàëüíûõ êîíñòðóêöèé äëÿ òåìïåðàòóðíûõ ðåaeèìîâ, ñîîòâåòñòâóþùèõ ñòàíäàðòíûì "öåëëþëîçíîìó" è óãëåâîäîðîäíîìó ïîaeàðàì, â çàâèñèìîñòè îò ïðèâåäåííîé òîëùèíû êîíñòðóêöèé. Ìåòîäèêà ðàñ÷åòà è ïîëó÷åííûå ðåçóëüòàòû. ×èñëåííîå ìîäåëèðîâàíèå ïðîãðåâà êîíñòðóêöèé ïðîâîäèëè ñ ïîìîùüþ ïðîãðàììíîãî êîìïëåêñà FDS 6. Ðàññìàòðèâàëèñü ñòàëüíûå íåçàùèùåííûå êîíñòðóêöèè ñ ïðèâåäåííîé òîëùèíîé dêð îò 3 äî 60 ìì. Ïðåäåë îãíåñòîéêîñòè óñòàíàâëèâàëè ïî äîñòèaeåíèè êîíñòðóêöèåé òåìïåðàòóðû 500°Ñ. Ïîëó÷åíû çàâèñèìîñòè ôàêòè÷åñêîãî ïðåäåëà îãíåñòîéêîñòè êîíñòðóêöèè îò åå ïðèâåäåííîé òîëùèíû dêð, êîòîðûé äëÿ óãëåâîäîðîäíîãî ðåaeèìà ïîaeàðà îêàçàëñÿ ñóùåñòâåííî íèaeå, ÷åì äëÿ "öåëëþëîçíîãî". Íàéäåíà çàâèñèìîñòü îòíîøåíèÿ ïðåäåëîâ îãíåñòîéêîñòè äëÿ óãëåâîäîðîäíîãî è "öåëëþëîçíîãî" ïîaeàðîâ îò ïðèâåäåííîé òîëùèíû ñòðîèòåëüíîé êîíñòðóêöèè. Çàêëþ÷åíèå. Ðåçóëüòàòû ðàáîòû ïîäòâåðaeäàþò îáîñíîâàííîñòü òðåáîâàíèé ÑÏ 2.13130.2012 (ï. 5.4.3) â ÷àñòè âîçìîaeíîñòè ïðèìåíåíèÿ íåçàùèùåííûõ ñòàëüíûõ êîíñòðóêöèé, åñëè òðåáóåìûé ïðåäåë îãíåñòîéêîñòè ñîñòàâëÿåò R 15 (RE 15, REI 15) äëÿ "öåëëþëîçíîãî" ïîaeàðà.  òî aeå âðåìÿ äëÿ óãëåâîäîðîäíîãî ðåaeèìà ïîaeàðà äàííîå òðåáîâàíèå íåïðèìåíèìî. Êëþ÷åâûå ñëîâà: "öåëëþëîçíûé" ïîaeàð; óãëåâîäîðîäíûé ïîaeàð; ïðèâåäåííàÿ òîëùèíà êîíñòðóêöèè; FDS 6; ïðîãðåâ êîíñòðóêöèè.

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The issues of construction of dispersion-filled polymer composite materials (DFPCM) structure, its description using the theory of lattices, packages and generalized parameters and their relationship with the inflammability of polymer floor coatings on a noncombustible base under the influence of a heat flux of various density are considered.For the first time, the fundamental dependences of the critical surface heat flux density (CSHFD) of DFPCM bulk floors based on epoxy and polyurethane matrices and inert filler (silicon dioxide) on the generalized structure parameters and lattice parameters have been established.The parameters of structure and composition of DFPCMs to obtain a liquid polymer bulk floors by traditional technology have been determined. These DFPCMs have inflammability not higher than B2, so they are moderately flammable, i.e. non-flammable when exposed to heat flux under test conditions according to GOST 30402-96, which corresponds to a CSHFD value not lower than 20 kWt/m2.

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