Наукові статті

Increasing the efficiency of gravity mixing for concrete mixtures

Рудик, Р.Ю.

The article examines the impact of a gravity concrete mixer's geometric parameters and the concrete mixture's rheological properties on mixing efficiency. The kinematics of particles in the mixing drum are considered, taking into account gravitational, centrifugal and inertial forces. An analysis was conducted to assess the impact of blade angle, drum rotation speed, and mixture viscosity on component distribution uniformity and final material quality. The results of mathematical modeling confirmed that an increase in the rotation speed contributes to more active mixing, but its excessive value can lead to centrifugation of particles and a decrease in process efficiency. It has been established that the optimal angle of blades inclination ensures maximum circulation of particles and minimizes areas with weak mixing. A connection between the rheological characteristics of the mixture and the kinematics of its movement has been revealed, which allows optimizing the design parameters of the mixer to improve the mixing quality and reduce energy costs. The results obtained can be used to improve the design of concrete mixers, as well as the development of adaptive mixing process control systems. It is advisable to focus further research on mathematical modeling of turbulent flows in the mixing chamber and the development of intelligent systems for regulating mixing parameters.

English

2025-06-06

mathematical modeling

Київський національний університет будівництва і архітектури

Rudyk R. Increasing the efficiency of gravity mixing for concrete mixtures / R. Rudyk, V. Virchenko // Construction Engineering. – 2025. – Iss. 42. – P. 50–60. – https://doi.org/10.32347/tb.2025-42.0506

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