FIELD: construction.
SUBSTANCE: invention relates to the industry of construction materials and can be used in industrial and construction organisations for fireproofing building structures. Fibre-gypsum-vermiculite-concrete crude mixture for making fireproof coating contains, wt%: gypsum 40.0-47.7; expanded vermiculite 35.40-45.33; volcanic ash 3.0-3.5; portland cement 10.0-12.1; basalt fibre 1.2-1.5; saponified wood resin 0.07-0.1.
EFFECT: technical result is higher fire-resistance of building structures due to wider raw material base, increased strength and water-resistance of gypsum-vermiculite-concrete, increased crack resistance and fire-retardant properties of coating during fire.
1 cl, 3 tbl
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