SHOTCRETE MIX Russian patent published in 2025 - IPC C04B28/04 C04B24/20 C04B18/04 

FIELD: construction.

SUBSTANCE: invention relates to construction, and in particular to compositions of concrete mixtures with required values of characteristics of strength in compression and tension, as well as frost resistance and adhesion to concrete, and can be used in shotcrete concreting. Shotcrete mixture is obtained from binder, which is portland cement CEM I 32.5B, active polymineral additive – wastes of wet magnetic separation of ferruginous quartzites, jointly ground to specific surface area of 500 m²/kg, sand mixture – a mixture of quartz sands of fractions 0.63-1 and 1-1.5 in ratio of 1:2, chemical modifier – a polyfunctional air-entraining additive-superplasticiser based on a mixture of sodium salts of polymethylene naphthalene sulphonic acids of various molecular weight, and magnetically activated tempering water, which has been previously subjected to magnetic activation for 15 cycles of 1 minute.

EFFECT: creation of shotcrete having a set of required properties, such as compression and bending strength, frost resistance, adhesion to concrete, which enable to operate the material in various extreme conditions (high humidity, low temperatures).

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