DRY COMPOSITION FOR CREATION OF SELF-LEVELLING RAPIDLY HARDENING LIQUID FLOORS Russian patent published in 2015 - IPC C04B28/04 C04B111/20 

FIELD: chemistry.

SUBSTANCE: invention relates to industry of building materials and can be used for manufacturing self-levelling rapidly hardening cast products and constructions of self-levelling floor type in industrial and civil buildings, trade halls and gyms, car parkings and garages. Dry composition for creation of self-levelling rapidly hardening liquid floors, including gypsum binding agent, superplasticiser and activator of hardening, contains mixture of Portland cement, aluminate cement and gypsum binding agent - calcium α-semi-hydrate - as binding base, polyethyleneglycol and copolymer vinylacetate-ethylene as superplasticiser, and highly disperse silicon dioxide with specific surface 6000-9000 cm²/g as hardening activator with the following ratio of components, wt %: Portland cement - 8.4-15.6; aluminate cement - 12.8-23.4; calcium sulphate α-semi-hydrate - 4.5-10.2; polyethylene glycol - 0.8-3.9; vinylacetate-ethylene - 3.0-4.6; highly disperse silicon dioxide with specific surface 6000-9000 cm²/g - 20.4-27.0; filler the remaining part.

EFFECT: increased rate of gaining strength by solidified composition at early stages (1-7 days) and increased strength in 28-day with simultaneous preservation of exploitation and aesthetic properties of obtained composite material.

5 cl 6 ex 1 tbl