METHOD OF PREPARING CONCRETE MIXTURE Russian patent published in 2017 - IPC C04B40/00 C04B28/02 C04B24/24 C04B111/20 C04B16/06 

FIELD: construction.

SUBSTANCE: invention relates to construction, namely to technology of preparing concrete mixtures and articles therefrom, and can be used in making articles and structures in prefabricated building construction and in monolithic construction. Technical result is increase of mobility and safety of concrete mixture, higher concrete strength grade. In method of preparing concrete mixture preliminary 50 % of preset amount of cement is mixed with hardening water, containing 50 % of preset amount of superplasticizer based on polycarboxylate ether - REMICRETE SP11 and single-wall carbon nanotubes TUBALL, it is subjected to mechanochemical activation in rotary-oscillatory apparatus with working tool RPM of 5,000 during 2–3 minutes with subsequent stirring of remaining part of cement, aggregate and remaining superplasticizer REMICRETE SP11 in concrete mixer for at least 5 minutes. For uniform distribution of carbon tubes in additive prior to chemical activation with 50 % of total amount of cement, ultrasonic dispersion is performed for 5–10 minutes in solution of said superplasticizer, wherein power of ultrasonic disperser is 5–100 W.

EFFECT: technical result is increased persistence of concrete mixture and compression strength of concrete in 28 days age.

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