4 aspects to consider when buying a road roller

4 aspects to consider when buying a road roller

Factors to consider when choosing a road roller
   (1) Choose according to project quality requirements
   If you want to obtain a uniform compaction density, you can choose a tire roller. The tire roller does not destroy the original viscosity of the soil during compaction and has good bonding performance between the layers of soil. The front wheel can swing, so the compaction is more uniform and there will be no false compaction.
   If you want to make the road surface compact and smooth, you can choose a full-drive roller.
   In areas where the compaction capacity of the roller is not high, a flexible roller with lower line pressure can be used.
   If you want to achieve the compaction effect as soon as possible, you can choose a large tonnage roller to shorten the construction period.
   (2) Choose according to the layer thickness
   When rolling an asphalt concrete pavement, the weight, amplitude and vibration frequency of the roller should be selected according to the paving thickness of the mixture. Generally, on thin pavements with a pavement thickness of less than 60mm, it is best to use a small 2-6t vibratory roller with an amplitude of 0.35~0.60mm to avoid piles, waves, and damage to aggregates; at the same time, it is better to use a small vibratory roller of 2~6t with an amplitude of 0.35~0.60mm; In order to prevent the asphalt mixture from being too cold, it should be rolled immediately after paving. For thick plies with a thickness greater than 100mm, a large and medium-sized vibratory roller with a high amplitude (up to 1.0mm) and 6~10t should be used.
   (3) Choose according to road type (grade)
For primary and secondary national arterial roads and dedicated roads for automobiles, a 6-10t large vibratory roller with high compaction capacity should be used; for roads below grade three, or when compaction operations are not frequent, it is best to equip 2t. The maneuverable and flexible vibratory roller on the left and right.
For cement concrete roads, tire-driven tandem vibratory rollers can be used; for asphalt concrete pavements, full-drive vibratory rollers should be used; for the bottom layer of high-grade pavement roadbeds, it is best to use tire rollers or tire-driven vibratory rollers for compaction. Uniform compactness; static action steel wheel rollers can be used when repairing the road surface.
   (4) Choose according to the type of material to be pressed
For the compaction of rock fills, a large-tonnage roller should be used to displace the large blocks; for the compaction of clay, it is best to use a bump tamping roller; for the compaction of a mixture, it is best to choose a vibratory roller , In order to mix large and small particles uniformly; the deep layer should be compacted with a heavy-duty vibratory roller at a slow speed, and the shallow layer should be a static action roller.

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