6 roller operation tips: improve the efficiency of road compaction

In highway construction, the compaction of asphalt pavement is a key link, which has a vital impact on ensuring the structural strength and service life of the pavement. In the process of compacting asphalt pavement, the operation skills of the roller should not be ignored. Correct operation skills can not only improve the compaction quality, but also protect the roller and extend its service life. The following are six key skills of rollers in the process of pavement compaction.

1. When compacting uphill or downhill, it is necessary to ensure that the lower layer of asphalt mixture is clean and dry, and spray the asphalt binder layer to prevent the mixture from sliding.

2. Whether uphill or downhill, the driving wheel of the roller should be at the rear to provide better stability and control.

3. When compacting uphill, the start, stop and acceleration of the roller should be kept stable to avoid drastic changes in speed that affect the compaction effect.

4. Before compacting uphill, the mixture should be cooled to a suitable temperature range before static pre-compaction. After the mixture temperature is further reduced, vibration compaction is used.
5. When compacting downhill, avoid sudden acceleration and emergency braking to reduce the impact on the road surface and roller.
6. When compacting downhill on a steep slope, a light roller should be used for pre-compaction first to stabilize the mixture. Then use a heavy roller or a vibratory roller for the final compaction.
These tips can help construction workers better control the operation of the roller, thereby improving the compaction quality and performance of the asphalt pavement.

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