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 for hydroinsulation protection of concrete surface of repaired and newly built buildings in industrial and civil construction. Raw material mixture contains, wt %: Portland cement 36.62-38.40, construction sand fraction 0.16-0.63 mm 26.88-27.48 construction sand fraction 0.63-1.25 mm 17.72-18.32, bentonite clay with specific surface equal 500 m²/kg, 0.50-0.54, complex additive 0.90-0.94, dolomitic limestone with specific surface equal 200 m²/kg, 8.84-9.14, water 6.76-6.96, said complex additive contains, wt %: superplasticiser C-3 29.4-30.2, 20% solution of silicic acid sol with pH-3.5±0.5 23.2-23.6, lithium nitrate 46.6-47.0.

EFFECT: increase of depth of raw material mixture penetration inside concrete base, increase of concrete base strength and reduction of water absorption by protective coating.

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