Simulation analysis of the significance and interaction of influencing factors on mixing uniformity of double drum recycling mixing plant

Abstract The mixing uniformity of the double drum recycling mixing plant has an important effect on the quality of recycled asphalt mixture. The mixing uniformity of the double drum recycling mixing plant not only depends on the axial installation angle of the blade, the radial installation angle of the blade, the phase angle of the stirring arm, the inclination angle of the drum, and the rotation speed of the drum, but also on the interaction between these factors. In order to further clarify the relationship between the mixing uniformity and the above factors, the significance and interaction of influencing factors of mixing uniformity were studied based on EDEM and response surface methodology (RSM). The result shows that the factors affecting the mixing uniformity of the aggregates are significantly different when the aggregate size is different. Therefore, when studying the mixing uniformity of a mixing plant, it is not comprehensive to conduct research on a certain factor in a single-sided manner. Instead, the main factors and the interaction between the factors should be considered comprehensively.