FIELD: construction.
SUBSTANCE: present invention relates to a method of producing gypsum-containing foamed prefabricated construction material and to a gypsum-containing foamed construction material containing an aqueous dispersion of an alkyl ketene dimer, at least one emulsifier from a group comprising starch, cellulose, a starch derivative or a cellulose derivative, and a condensation product of naphthalene sulphonic acid, phenol sulphonic acid and formaldehyde or naphthalene sulphonic acid, phenol, formaldehyde and urea. Invention is developed in dependent claims.
EFFECT: obtaining gypsum building material having high hydrophobicity and strength.
21 cl, 7 tbl, 10 ex
| Title | Year | Author | Number |
|---|---|---|---|
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