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Roller compacted small concrete batching plant jobs impact on smoothness

2014-01-25

(1) the compacting machinery. Compaction of asphalt mini concrete mixing plant surface generally have initial pressure, compound pressure and end pressure. Initial pressure should be treated with double-drum road roller; vibration road roller, pneumatic tyre roller for repressing; final pressure or vibration of double-drum road roller compactor. Specifications, quantity and speed of the rollers and pavers construction match the width and speed of paver. Poorly chosen, there will be over, cracked, wheel track, hold bags, potholes, washboard, waves, cause a decrease in smoothness.
(2) the compaction technology.
① initial pressure should be carried out at higher temperatures. Initial pressure temperature according to the marking of bitumen, road roller models, the paver screed the initial density, and other factors determined by pressure test. I experience rolling immediately after the paver, most of the initial pressure temperature 120 ℃ ~ 140 ℃, does not occur over craze, and so on.
②When rolling the drive wheels in the front, from behind the wheel, you avoid hot material is extruded uplift, back up while travelling along the forward rolling of the wheel track. From outer to inner, from low to high-rolling, Vibro-rolling after the first static pressure. Rolling start, reversing, improper methods such as regression can cause surface appears, hold bags, over pits, wheel track. So, grind pressure process in the as not hit direction, and brake, grind pressure must trapezoidal overlap, prevent Super pressure or leak pressure, in with vibration roller complex pressure or end pressure Shi, reversing should first stopped vibration, forward pressure Shi, first started again opened vibration, to avoid hold package or appeared au slot, roller shall not in is not grind pressure forming and cooling of pavement Shang steering, and turn or parking waiting.
Vibratory roller in the forming of vibration should be closed when driving on the road. Day of roller compacted asphalt concrete pavement in shape but not cooling not be parked on any construction or other devices and materials, to prevent deformation. Cool completely before they can be opened to traffic.
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