FIELD: construction.
SUBSTANCE: gypsum suspension contains water, hydraulic material containing at least 50 wt % of calcium sulfate hemihydrate, and polycarboxylate disperser with a molecular weight from 20000 to 80000 Da, containing a repeating link such as an ether of vinyl alcohol, a repeating link such as acrylic acid and a repeating link such as maleic acid. A wall board includes at least one part made of lining material fixed to the gypsum core, where the specified core is made of the above mentioned gypsum suspension.
EFFECT: increased speed of hardening.
17 cl, 4 tbl, 4 ex
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