The use of mini roller compactor for road construction is relatively a better choice. According to different projects, different paving thicknesses, different road types, and different types of materials to be pressed, the type of mini roller compactor selected is also available. The difference. The choice of mini road roller is related to the efficiency of highway construction and the quality of the project, so choosing the right road roller machine is very important for construction.
1. Choose according to engineering quality requirements:
If you want to obtain a uniform compaction density, a tire-type road roller machine can be used. The tire-type road roller machine does not destroy the original viscosity of the soil during rolling, 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 compactor. In areas where the compaction capacity of the roller compactor is not high, a flexible roller with lower line pressure can be used. To achieve the compaction effect as soon as possible, a large-tonnage road roller machine can be used to shorten the construction period.
2. Choose according to layer thickness:
When rolling an 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, a small 2-6t vibratory roller with an amplitude of 0.35~0.60mm is used to avoid piles, waves, and damage to aggregates. 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 large and medium-sized vibratory roller with a high amplitude (up to 1.0mm) and 6~10t should be used.
3. Choose a small roller according to the type (grade) of the road:
For the first and second national arterial roads and special roads for automobiles, a large vibratory roller with a high compaction capacity of 6~10t should be used; for roads below the third level, or when compaction operations are not frequent, a 2t or so should be equipped Flexible vibration road roller. For cement concrete pavements, tire-driven tandem vibratory rollers can be used; for asphalt concrete pavements, full-drive vibratory rollers should be used;
4. Choose according to the type of material to be pressed:
For rock fill compaction, a large-tonnage road roller machine should be used to displace large blocks; for clay compaction, it is recommended to use bump tamping road roller; for mixture compaction, choose vibratory road roller in order to mix the large and small particles evenly.
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