Gypsum mixture. RU patent 2415098.

FIELD: chemistry.

SUBSTANCE: invention relates to a gypsum mixture and can be used in the construction industry to make various articles, for example blocks and slabs. The gypsum mixture contains the following in wt %: gypsum hemihydrate 28-30, slaked lime 1.2-1.5, portland cement 0.3-0.5, quartz sand with grain size of up to 0.8 mm 41.97-47.95, water 20-23, zinc sulphate 0.03-0.05, mullite-silica wool 2.5-3.

EFFECT: high strength.

1 tbl

IPC classes for russian patent Gypsum mixture. RU patent 2415098. (RU 2415098):

C04B28/14 - containing calcium sulfate cements

C04B111/20 - LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS (devitrified glass-ceramics C03C0010000000); REFRACTORIES (alloys based on refractory metals C22C); TREATMENT OF NATURAL STONE

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