| 摘要 |
FIELD: construction, road engineering. ^ SUBSTANCE: roll of compaction roller, comprising cylindrical shell fixed on shaft by means of hubs, equipped with through holes evenly arranged on its outer surface, differs by the fact that section of through hole reduces from outer surface of roll shell to inner one, at the same time section of hole that directly adjoins inner surface of shell is arranged as cylindrical, and section that directly adjoins its outer surface is arranged as conical, angle of generatrix of which makes 45, at the same time, ratio of total area of through holes, on the side of outer surface of shell to its area is accepted in the range of 0.25-0.3, at the same time ratio of hole diametre on the side of outer surface of shell to thickness of layer of rolled asphalt-concrete mixture is accepted in the range of 0.5-0.65. Besides diametre of cylindrical section of through hole does not exceed minimum size of large filler particles. In process of specified device usage contact pressures vary in wide range, which is provided by establishment of power balance in the system "working element - compacted material" at any stage of compaction process due to optimisation of holes and giving them special shape. Besides availability of perforation improves air exhaust from compacted layer and assists in active realignment of mineral particles of asphalt-concrete mix. Besides possibility is provided to reduce relative disturbance force for vibration compaction rollers twice. ^ EFFECT: possibility is provided to use single compaction roller at all cycles of asphalt-concrete mixtures compaction with thickness of 40-70 mm, and also possibility is provided in order to visually detect completion of works aimed at compaction of asphalt-concrete mixtures and reduction of wave formation in asphalt-concrete mixture. ^ 2 cl, 6 dwg |
