GYPSUM MIXTURES FOR FORMATION OF SOLID MATERIALS Russian patent published in 2014 - IPC C04B28/14 C04B16/00 

FIELD: chemistry.

SUBSTANCE: claimed group of inventions relate to highly strong flooring compositions. Mixture for application in combination with water with obtaining suspension, which hydrates with formation of highly strong flooring composition contains: from approximately 50 wt % to approximately 98 wt % of calcium sulfate hemihydrates, from approximately 0.002 wt % to approximately 1 wt % of polysaccharide and from approximately 0.02 wt % to approximately 2.5 wt % of lignin or lignosulfonate. Suspension contains water and sand, mixed with said mixture. Sand is present in weight ratio, constituting, at least, approximately 2.5:1 (in units ft³ of sand: 80 pounds of dry mixture).

EFFECT: increased content of sand suspensions and respectively increased strength of flooring.

8 cl, 4 tbl