CONCRETE MIXTURE Russian patent published in 2024 - IPC C04B28/02 

FIELD: construction materials.

SUBSTANCE: invention relates to the industry of construction materials and relates to compositions of concrete mixtures intended for use in the construction of hydraulic and underground structures. Concrete mixture includes cement, microsilica, polycarboxylate superplasticiser, quartz sand, quartz flour and water, wherein cement is sulphate-resistant cement with activity of 46.5 MPa and content of tricalcium aluminate – C₃A – 18.48 wt.%, quartz sand with fineness modulus of 2.5-3.5, quartz flour with average particle size of 5-95 mcm and additionally the concrete mixture contains asbestos fibre, coal flue ash, nanosilica with particle size of (10-50)⋅10^-3 mcm, crushed granite 5-20 mm at certain ratio of components.

EFFECT: obtaining concrete with high density, low water absorption, which is resistant to sulphate corrosion, while providing high bending, splitting and compression strength.

1 cl, 2 tbl