ADDITIVES BASED ON GRAPHENE NANOMATERIALS FOR IMPROVING CEMENTITIOUS COMPOSITIONS, CEMENTING COMPOSITION, METHOD FOR PRODUCING REINFORCED CONCRETE, REINFORCED CONCRETE AND ITS APPLICATION Russian patent published in 2022 - IPC C04B28/02 C04B14/38 C04B40/00 C04B111/28 C04B111/34 C04B111/20 

FIELD: additives.

SUBSTANCE: present invention relates to additives based on graphene nanomaterials for improving cementitious compositions, preferably concrete, and to a cementitious composition containing additives. The additive contains a mixture of graphene nanofibers, graphene oxide (GO), dispersing agent (D) and superplasticizer (SP), containing at least two types of graphene nanofibers selected from graphene nanofibers with high specific surface area (GNF-HS), graphene nanofibers with low specific surface area (GNF-LS) or long length graphene nanofibers (GNF-LL), where the graphene nanofibers have an average diameter in the range from 2 to 200 nm, and where the specified additive based on graphene nanomaterials, due to the content of different ratios of at least two types of graphene nanofibers, is precisely controlled to obtain various cementitious compositions with specific properties. Also described are a cementitious composition, a method for producing reinforced concrete, reinforced concrete and its use.

EFFECT: improvement of cementitious compositions, preferably concrete, and to a cementitious composition containing additives.

11 cl, 7 dwg, 3 tbl