About the influence of some geometric foam concrete parameters on the quality of foam concrete mixture and consumption power

In the laboratory of the Department of "Technology of binders, concrete and building ceramics" of the Don State Technical University, a number of experiments were conducted aimed at determining the optimal geometric parameters of the mixer to obtain high-quality foam concrete mixture. In the article, the authors considered the influence of the ratio of the height of the mixture and the diameter of the mixer, the number and width of the reflective partitions, as well as the shape of the conical part of the mixer on the uniformity of the foam concrete and power consumption. The authors found that the parameter “ratio of the height of the foam concrete mixture in the mixer and the diameter of the mixer” is rational for the foam concrete within the range of 0.75 to 1. It is also noted that high-quality (uniform throughout the volume) foam concrete mixture with less energy to obtain with the ratio "the width of the partition the diameter of the mixer" in the range from 0.04-0.06; an increase in the number of reflective partitions leads to an increase in the homogeneity of the mixture and an increase in the power consumption for its preparation, while an increase in the number of partitions more than four does not significantly increase the power consumption and improve the quality of the mixture; therefore, it is rational to install four reflective partitions in the mixer. The rational angle of the conical part of the mixer for the preparation of foam concrete mix is from 50° to 60°.