FIELD: chemistry.
SUBSTANCE: invention relates to production of construction materials and can be used to produce composite heat-insulation materials used in monolithic building construction. The composition for making heat-insulation foamed concrete contains the following in wt %: portland cement 40.0-50.0, wood fibre 5-9, liquid glass 1.0-1.5, calcium chloride 0.2-0.5, product from alkylating phenol production wastes with oxygen-containing organic substances 0.1-0.5, foaming agent PB-2000 1.0-4.0, complex additive in form of a product of treating second tar oil with foaming agent PB-2000 in molar ratio of 0.75:1-1:0.75 1.0-1.5, water - the rest.
EFFECT: good hydrophobic properties of the material while preserving physical and mechanical properties of finished articles.
1 ex, 2 tbl
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