DRY CONSTRUCTION MIX Russian patent published in 2022 - IPC C04B28/04 C04B14/38 C04B18/16 C04B24/26 C04B111/20 

FIELD: production of building materials.

SUBSTANCE: invention relates to the production of building materials and, in particular, to dry building mixes used for the manufacture of plaster mortars, and can be used to create finishing coatings.

EFFECT: invention provides necessary adhesion with an increase in the physical and mechanical properties and performance characteristics of coatings based on dry construction mix, as well as reducing the cost of final products while improving the environmental situation through the use of man-made waste in the mixture. The dry construction mix contains Portland cement, a structure-forming and reinforcing additive, a superplasticizer and a fine filler. Portland cement TSEM II/A-Sh 32.5B and a polycarboxylate ether-based superplasticizer are used, basalt fiber production waste with a length of 7-15 mm, a width of 3-5 mm, a thickness of 0.13 ±0.03 mm is used as a structure–forming and reinforcing additive, and a sand fraction of concrete scrap with a grain size of 0.16-0.325 mm is used as a fine filler, with the following the content of components in wt.%: Portland cement CEM II/A-W 32.5B 13.8-18.5; superplasticizer based on polycarboxylate ether 0.7-1.1; basalt fiber waste 4.4-5.8; sand fraction of concrete scrap screening 76.4-79.3.

1 cl, 3 tbl