FIELD: construction.
SUBSTANCE: group of inventions relates to a method for manufacturing a gypsum-containing foamed prefabricated building material and to a gypsum-containing foamed prefabricated building material obtained thereby. Method for producing a gypsum-containing foamed prefabricated building material includes preparing a mixture of gypsum hemihydrate and/or anhydrite with a ketene dimer and aqueous foam, moulding, curing and drying of the gypsum composition to produce a foamed prefabricated building material. Group of inventions is developed in independent and dependent claims.
EFFECT: obtaining gypsum-containing foamed prefabricated building material with high hydrophobicity and strength.
16 cl, 2 tbl, 2 ex
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