FIELD: construction.
SUBSTANCE: invention relates to construction materials, namely to structure-forming modifiers of concrete - foaming agents, and can be used for producing foamed concrete, including foamed concrete. Protein foaming agent contains, wt%: neutralized with 20% solution of sulphur acid to pH 7-8 protein hydrolysate component of product microbiological conversion of distillery stillage with fungus culture Geotrichum candidum strain 3C-106, enriched with microbial synthesis protein 0.57-1.5, stabilizing additive - 20% solution of iron (III) sulphate 0.3-0.6, water - the rest.
EFFECT: technical result is high expansion ratio and stability of foam produced from protein foaming agent.
1 cl, 1 ex, 2 tbl
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