Increase of fire resistance of wooden building structures by reducing the flammability of wood

A. S. Belikov, V. A. Shalomov, E. N. Korzh, S. Yu. Rahimov

Abstract


Annotation. Purpose. Development of flame retardants and study its properties: determination of effectiveness of the proposed fireproof coating. Methods. In carrying out investigations conducted an analytical overview of the main groups of flame retardants tools that increase fire resistance limit of builders, assess their performance, and in accordance with DSTU B V. 1. 1-4-98 "Protection from fire. Building construction. Test methods for fire resistance. General requirements "is defined fireproof properties developed fire retardant coating. Results. The authors developed fire retardant coating composition that swells that forms on the surface, which is "protected" thin transparent layer that prevents inflammation and the spread of flames on the wooden construction. Selection of fireproof composition performed on a "conjunction - supplement bubbled - filler." The basis of liquid glass coating is taken due to the fact that it has such positive characteristics as availability, due to the expression of liquid glass astringent properties - the ability to spontaneous curing to form artificial silicate stone. Adding water glass components such as perlite, graphite and epoxy, taking into account their positive characteristics about high temperatures, provided a new flame retardant. Mean value of weight loss 6 samples was 6.875%. The thickness of fire-proof coatings is less than 1 mm. According to DSTU B V.1.1-4-98 designed fireproof coating provides group I fireproof efficiency for wood as weight loss in a secure timber under test is not more than 9%. Scientific novelty. Given the choice of theoretical assumptions held initial components for the new flame retardant. Practical meaningfulness. It has developed a new non-combustible intumescing composition that allows to convert combustible material to the group and to increase slow-fire building designs.

Keywords


flame retardants that bubbled; flameproof; fire; fire resistance of wooden structures; the effectiveness of fireproof coatings; liquid glass; flame retardants

References


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Belikov A. S., Kaplenko G. G., Korzh E. M. Sumish dlya vigotovlennya vognezahisnogo pokrittya [The mixture for making fire-proof coatings]. Pat. 114002 Ukrayina, MPK S09К 21/00, zayavnik i patentovlasnik Derzhavniy vischiy navchalniy zaklad «Pridniprovska derzhavna akademiya budivnitstva ta arhitekturi». – №201608710. Zayavl. 11.08.2016; Nadr. 27.02.2017; Byul. 4. – 4 p.(in Ukrainian).


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