RAW MATERIAL MIXTURE Russian patent published in 2010 - IPC C04B41/63 C04B41/68 

FIELD: chemistry.

SUBSTANCE: invention relates to field of construction materials and can be used as thin-layered hydroinsulation protective coating of concrete and other porous surfaces in industrial and civil construction. Raw material mixture contains, wt %: Portland cement 30.3-32.3, sand with maximal fraction size 0.63 mm 40.4-40.9, finely milled dolomitic limestone with specific surface equal 200 m²/kg, 8.1-8.6, complex additive 3.2-3.7, water 16.0-16.5, said complex additive contains, wt %: microsilica with specific surface equal 2000 m²/kg, 47-49, alumina cement 24.5-25.0, gypsum CaSO₄·2H₂O 9.8-10.2, plasticiser C-3 3.7-4.0, silicic acid sol H₄SiO₄ with density 1.014 g/cm³ and pH=3.5±0.5 3.0-3.4, bentonite clay with specific surface equal 500 m²/kg, 10.0-10.4.

EFFECT: reduction of unmixing, increase of water-holding capacity, reduction of water absorption, increase of protective coating compression strength.

1 tbl