FIELD: production of building materials. SUBSTANCE: gas-forming agent comprises aluminium powder, water and special additive, namely, alcohol production by-product resulting from purification of alcohol by rectification. These components are taken in the following ratio, mas.pts: aluminium powder, 1.0; alcohol rectification derivative, 0.3-0.5. Use of paste-like gas-forming agent makes it possible to produce cellular concrete weight satisfactory physico-mechanical parameters. Alcohol rectification derivative presenting difficult-to-dispose by-product of alcohol production is completely utilized. EFFECT: higher efficiency. 1 tbl
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