FIELD: construction; chemistry.
SUBSTANCE: invention relates to production of construction materials, wall blocks, slabs, panels, 3D blocks, 3D slabs, small piece cast from gypsum. Invention contains a crude mixture for making gypsum articles. Crude mixture contains semi-aqueous gypsum, aluminium sulphate Al2(SO4)3, calcium hydroxide Ca(OH)2, water and a mineral foam filler. Ratio of components in mixture is the following, wt. %: semi-aqueous gypsum 59–59.3; mineral foam filler 3.12–3.42; calcium hydroxide 0.43–0.45; aluminium sulphate 0.0260–0.1066; water is balance.
EFFECT: technical result is reduction of density and weight of articles from gypsum, their hardening without complication of production technology.
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