METHOD OF PREPARING CONCRETE MIXTURE Russian patent published in 2025 - IPC C04B40/00 C04B28/04 C04B16/00 C04B14/06 C04B14/02 C04B24/00 

FIELD: construction materials.

SUBSTANCE: invention relates to the technology of preparing concrete mixtures with organic and mineral additives used for concreting monolithic structures, particularly in road construction. Method of concrete mixture preparation includes two stages. At the first stage, mixed are: crushed stone, sand and a mineral additive in the form of tyrsa crushed to 2,000 cm²/g, which is a kind of shell limestone, which is introduced into the mixture at rate of 60-100 kg/m³. At the second stage, binder is added in form of portland cement, water and plasticising additive in form of polycarboxylate superplasticizer ST 5.0 in amount of 1% of weight of portland cement and all components are finally mixed until a concrete mixture of given workability is obtained.

EFFECT: increased strength of concrete at three-day age, which enables to reduce the period of commissioning of the facility under construction.

1 cl, 5 tbl