The influence of road rollers on the formation of defects in asphalt concrete pavements

Abstract

The article provides an overview of compactor equipment and methods of compaction of asphalt concrete mixtures. The most common defects of asphalt concrete pavements associated with poor-quality compaction, the vibration effect of rollers and a violation of the preparation of the base on which the mixture is laid are considered. The vibration effect of road rollers, despite sufficient efficiency, still remains not an absolute panacea for the appearance of defects in the pavement. The authors describe the reasons why the vibration effect of rollers does not always allow to achieve a qualitatively laid layer of asphalt concrete mixture. The static and vibrational effects of rollers on asphalt concrete mixtures are analyzed, the main advantages and disadvantages of various impacts on the material are presented. The result of the study is the dependence of the compaction quality on the method of exposure, the type of machine and the preparation of the base. Compliance with the roller compaction technology during road construction is an important factor contributing to a significant increase in the resource of asphalt concrete pavement. The slightest deviations in the compaction by the roller lead to the formation of coating defects and a reduction in its service life.  The order of construction of the machines in the set by weight, the order of application of static and vibration effects on the mixture, the parameters of the finishing roller of the set – all this significantly affects the density of the asphalt concrete coating and its resource.