REINFORCING COMPOSITION FOR CEMENT MORTARS AND CONCRETES Russian patent published in 2022 - IPC C04B28/00 C09K8/467 

FIELD: chemistry.

SUBSTANCE: invention relates to the field of chemistry and can be used as an additive based on epoxy-diane resins for the manufacture of cement or concrete compositions with improved strength characteristics intended for use in construction, the oil industry and the gas industry for fixing wells. The reinforcing composition for cement mortars and concretes based on epoxy-diane resin containing a rheological additive and a hardener contains, as an epoxy-diane resin, a polymer of 4,4'-(1-methylethylidene) bisphenol with chloromethyloxirane modified with 1,4-Bis (2,3-epoxypropoxy) butane, as a hardener a mixture of aromatic amines, with the following component ratio, wt. %: modified epoxy-diane resin 55.0-70.0; hardener 15.0-40.0; rheological additive 5.0-30.0, and as a rheological additive contains a mixture of glycidyl esters with the following ratio of components, wt. %: diglidicyl ether of cyclohexanedimethanol 75.0-85.0; triglycidyl ether of glycerin 5.0-10.0; phenyl glycidyl ether 10.0-15.0.

EFFECT: increase in the performance characteristics of cement mortars by increasing the compressive strength of cement stone while reducing its modulus of elasticity.

5 cl, 2 tbl