FIELD: fire retardation of concrete, reinforced concrete, reinforced cement, and steel building constructions.
SUBSTANCE: raw mixture for claimed coating contains (mass %) hydraulic binder 70-90; expended perlite sand of 0.16-1.25 mm-grade 5-15; expanded vermiculite of 0.6-5.0 mm-grade 5-15; optionally microsilica 3-20 % or liquid glass 1-5 % as reduced to mass of hydraulic binder, or C3-additive 0.2-1.0 % as reduced to mass of hydraulic binder. As hydraulic binder cementing agent of low water requirement including (mass %) clinker cement 20-90; ground perlite 10-80, and chemical additive containing 0.5-3.5 % of water-lowering component as reduced to clinker cement or cementing agent of low water and Portland cement in amount of 10-90 % is used. Raw mixture contains tempering water up to water/solid ratio of 0.5-1.0.
EFFECT: coating with increased durability, mobility, delamination resistance and improved adhesion to construction surface.
7 cl, 6 tbl
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