FIELD: chemistry.
SUBSTANCE: invention relates to a crude mixture for making artificial rock and can be used in the industry of construction materials. The crude mixture for making artificial rock contains the following, wt %: portland cement 22-24; iron sulphides 2-4; water 22-24; powdered water treatment sludge formed from removing hardness salts during water treatment at thermoelectric plants, with packed density of 850-900 kg/m3 48-50.5; superplasticiser S-3 1-1.5.
EFFECT: improved workability of the crude mixture.
1 tbl
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