METHOD FOR MANUFACTURING CEMENT, CONSTRUCTION GROUTS, CONCRETE COMPOSITIONS CONTAINING FILLER (FILLERS) BASED ON CALCIUM CARBONATE, (PRELIMINARY) TREATED BY ULTRADISPERSED FILLER (FILLERS), COMPOSITIONS OBTAINED AND CEMENT MATERIALS AND THEIR APPLICATIONS Russian patent published in 2017 - IPC C04B14/28 C04B20/10 C04B28/02 C04B40/00 C04B103/32 

FIELD: construction.

SUBSTANCE: method for manufacturing a cement composition, that includes introducing a product comprising the mixture of a filler comprising coarse-grained calcium carbonate and an ultradisperse filler during the cement composition manufacturing process. The filler containing the coarse-grained calcium carbonate has a d₅₀ value of more than 6 mcm, and the ultradisperse filler has a d₅₀ value ranging from 1 mcm to 6 mcm, and the Blaine specific surface area of more than 1000 m²/kg, wherein from 0.5 to 25% of the dry weight of the ultradisperse material is added, based on the total dry weight of the filler containing the coarse-grained calcium carbonate and the ultradisperse filler.

EFFECT: increasing the fluidity of the cement composition.

15 cl, 5 dwg, 8 tbl, 6 ex