Date: Jul 01, 2024 Views:
Points of compaction method
1. In accordance with the principle of top to bottom, first static then vibration, first slow then fast, the single rolling distance should be as long as possible to give full play to the stability of the
rolling pressure;
2. Require the roller to follow closely behind the paver for rolling, not too far away to avoid temperature conditions can not be controlled. Eliminate all wheel tracks before final rolling, and stop the
operation immediately after meeting the requirements to avoid over vibration;
3. which eliminates the wheel track can be carried out by overlapping rolling, in rolling, adjacent rolling belt overlap wheel width of 1/3 ~ 1/2, from the cross-section on the low side of the side
gradually moved to the high side, the roller folded back once for a rolling;
4. If the direction with the paver is not in a cross-section, but presents a stepped shape, then it is necessary to stagger the distance before and after each rolling, usually half a meter. The longest and
then the shortest way is used, i.e. the first rolling distance is long and the distance is gradually shortened at the back.
5. pay attention to the roller nozzle sprinkler water, to not stick to the wheel as appropriate and, the rolling process is not terminated prohibit steering, braking or stopping.
Specific crushing steps:
1. Initial compaction
The temperature of initial compaction should be above 150℃, start the machine with steel wheel roller static compaction 1~2 times, the speed is within 2km/h, and keep rapid. Rolling on the plane,
the driving wheel in front, that is, facing the paver, the passive wheel in the back. In case of a slope, whether uphill or downhill, the driving wheel is at the lower part.
2. Re-compaction
After the initial compaction is completed, the re-compaction can be carried out, at this time, the road surface temperature shall not be lower than 125℃, firstly, use the heavy-duty double drum
roller to vibrate and crush 4 times, keep the speed at 4km/h~5km/h, and then, use the heavy-duty tire roller to crush 6 times, keep the speed at 3.5km/h~4.5km/h. Eventually, see the effect to
increase the number of times of crushing by 1~2 times.
3. Final compaction
Repeat pressure is completed immediately after the final pressure, this time the road surface temperature above 110 ℃ is appropriate. Turn off the vibration, with 2km/h~3km/h speed for static
rolling.
