Analysis of the Application of Fire Protective Composition for Wooden Structures

In construction, coniferous wood is usually used as load-bearing and enclosing structures. Wood is characterized by the ability to ignite and spread combustion when heated in air. Wooden building structures pose a fire hazard, since with an initial impulse of external thermal energy, ignition is possible. In addition, when a fire occurs in buildings and structures where wood is located, a number of dangerous fire factors arise: flames, sparks, heat flow, toxic combustion products, extremely low oxygen concentrations, decreased visibility due to smoke. In this regard, it becomes relevant to treat wood with special compounds that increase resistance to fire. The authors examined the fire hazardous properties of building structures made of wood, analyzed the fire retardant treatment of wooden structures with a special composition; examined the fire hazardous properties of building structures made of wood, the mechanism of pyrolysis, and the effect of fire retardant treatment on the behavior of wood when exposed to fire. The use of fire retardant significantly affected the pyrolysis processes of the samples. The information obtained during the study made it possible to assess the degree of differences in the values of the average weight loss of samples treated with different fire retardants. Samples using a fire retardant composition have a shallower charring depth. Damage associated with thermal exposure is fundamentally different from untreated samples. Treated and impregnated samples exhibit rapid weight loss. This is due to the fact that in treated and impregnated samples, when exposed to high temperatures in the oven, the reactions of dehydration and cross-linking of cellulose molecules are accelerated.

Yu.N. KOVAL¹, Candidate Sciences (Biology) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
A.S. ANDREEV¹, Student (This email address is being protected from spambots. You need JavaScript enabled to view it.);
N.Z. AGAFONOVA², Senior Lecturer (This email address is being protected from spambots. You need JavaScript enabled to view it.)

¹ Siberian Fire and Rescue Academy State Fire Service EMERCOM of Russia (1, Severnaya Street, Zheleznogorsk, Krasnoyarsk Territory, 662972, Russian Federation)
² National Research Moscow State University of Civil Engineering (26, Yaroslavskoye Highway, Moscow, 129337, Russian Federation)

1. Aseeva R.M., Serkov B.B., Sivenkov A.B. Gorenie drevesiny i ee pozharoopasnye svoistva: monografiya [Wood combustion and its fire hazardous properties: monograph]. Moscow: Academy of State Fire Service of the Ministry of Emergency Situations of Russia. 2010. 262 p.
2. Afanasyev S.V., Balakin V.M. Teoriya i praktika ognezashchity drevesiny i drevesnykh izdelii: monografiya [Theory and practice of fire protection of wood and wood products: monograph]. Samara: Publishing House of SamSC RAS. 2012. 138 p.
3. Gonova V.A., Kunin A.V. Preparation of a fire extinguishing powder composition based on synthesized monoammonium phosphate. Problems of science. Chemistry, chemical technology and ecology: Collection of materials of the All-Russian Scientific and Technical Conference. Novomoskovsk. October 31, 2022, pp. 225–230. (In Russian).
4. Kashipov R.R., Kleveko V.I. Fire protection of wooden structures by deep impregnation in an autoclave. Sovremennye tekhnologii v stroitel’stve. Teoriya i praktika. 2020. Vol. 2, pp. 149–153. (In Russian).
5. Korolchenko A.Ya., Korolchenko O.N. Sredstva ognezashchity: spravochnik [Fire protection means: a reference book]. Moscow: Pozhnauka. 2006. 258 p.
6. Lomakin A.D. Zashchita derevyannykh konstruktsiy [Protection of wooden structures]. Moscow: Stroymaterialy. 2013. 424 p.
7. Lomakin A.D. Protection of long-span load-bearing laminated timber structures. Stroitel’nye Materialy [Construction Materials]. 2015. No. 7, pp. 55–59. (In Russaian).
8. Lomakin A.D. Protection of laminated timber structures in factory conditions. Stroitel’nye Materialy [Construction Materials]. 2013. No. 4. pp. 111–115. (In Russian).
9. Slavik Yu.Yu., Gusarov E.F. Protective and decorative acrylic paint and varnish compositions for wooden structures and products. Stroitel’nye Materialy [Construction Materials]. 2003. No. 5, pp. 38–39. (In Russian).
10. Slavik Yu.Yu., Gusarov E.F. Preparations for fire-bioprotective treatment of wooden structures. Stroitel’nye Materialy [Construction Materials]. 2003. No. 5, pp. 42–43. (In Russian).
11. Polishchuk E.Yu., Sivenkov A.B., Biryukov E.P. Regulatory requirements for fire protection of wood and expert assessment of its quality. Pozhary i chrezvychainye situatsii: predotvrashchenie, likvidatsiya. 2016. No. 2, pp. 77–80. (In Russian).
12. Lowden L.A., Hull T.R. Flammability behaviour of wood and a review of the methods for its reduction. Fire Science Reviews. 2013. No. 2. https://doi.org/10.1186/2193-0414-2-4