How to choose a road roller machine?

 

1. Choose according to engineering quality requirements:

1. If you want to obtain a uniform compaction density, you can choose a tire road roller. The tire road roller does not destroy the original viscosity of the soil during compaction, and there is good bonding performance between the various layers of soil. The front-wheel can swing, so the compaction is more uniform and there will be no false compaction.

2. If you want to make the road surface compact and smooth, you can choose a full-drive roller compactor.

In areas where the compaction capacity of the roller is not high, a flexible roller compactor with lower line pressure can be used.

To achieve the compaction effect as soon as possible, a large-tonnage roller compactor can be used to shorten the construction period.

2. Choose according to layer thickness:

1. When rolling asphalt concrete pavement, the weight, amplitude, and vibration frequency of the road roller machine should be selected according to the paving thickness of the mixture. Generally, on thin pavements with a ply thickness of less than 60mm, it is best to use a small 2-6t vibratory roller compactor with an amplitude of 0.35~0.60mm, so as to avoid piles, waves, and damage to aggregates;

2. At the same time, 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 high-amplitude (up to 1.0mm), 6-10t large and medium-sized vibratory road roller should be used.

3. Choose according to the type of road:

1. For primary and secondary national arterial roads and dedicated roads for automobiles, a large vibratory road roller with a high compaction capacity of 6~10t should be used; for roads below grade three, or when compaction operations are not frequently performed, it is best Equipped with a maneuverable and flexible vibratory roller compactor of about 2t.

2. For cement concrete roads, tire-driven tandem vibratory rollers compactor can be used;

3. For asphalt concrete pavement, a full-drive vibratory road roller should be used;

4. For the bottom layer of high-grade pavement roadbed, it is best to use tire road rollers or tire-driven vibratory rollers compactor for compaction to obtain uniform density;

5. When repairing the pavement, a static action smooth roller can be used.

4. Choose according to the type of material to be pressed:

1. For the compaction of rock fills, large tonnage road rollers should be used to displace large blocks;

2. For the compaction of clay, it is best to use a bump tamping roller;

3. For the compaction of the mixture, it is best to choose a vibrating road roller to make the large and small particles mix evenly;

4. For deep layer compaction, heavy-duty vibratory road rollers should be used for slow-rolling, while shallow layers should be statically applied road roller machine.