Review article

The paper deals with the enrichment method of fine concrete aggregates by volumetric vibrational deforming of layer of material, which is located between two oscillating working tools. Major regimes of the working tools` impact on the layer of material are investigated. An advantage of usage of the parameter of relative phase shift of working tools oscillations for controlling the impact parameters on processed grains surface is substantiated. Recommendations for selecting rational regimes for mechanical activation of concrete aggregates by techniques of crushing, abrasion and attrition are given.