Niz | Puni Prikaz

qizhen0809 · 04-01-2017, 04:42 AM

Asphalt pavement base and lower cover is easy to crack
On the one hand, due to the asphalt pavement paving construction technology used in the cement and the gravel graded road with fine material, asphalt mixture poor grade, poor maintenance and maintenance is not timely sealing, paver Working conditions are not good and other reasons, resulting in pavement and the next layer of the base layer is not bonded, easy to fall off the next seal. On the other hand, due to the amount of emulsified asphalt spray less or less spray, emulsified asphalt material quality and stone adhesion is poor, demulsification condensation speed too fast, plus the road surface is not timely clean, Easy to be driven by the vehicle tire tires and fall off and other reasons, resulting in asphalt pavement in the milling paving construction process, the base surface vulnerable to frost damage, the next seal can not seal the water, can not form a complete seal, and then The emergence of the next layer of continuous seepage, pavement and the next layer of the problem of cracking. Road Repair Equipment - Doan Machinery
Asphalt surface is difficult to carry out scientific paving compaction
In many highway projects in the asphalt pavement layer milling paving compaction degree of unqualified, uneven and so on. The main reason lies in the asphalt mixture and roller problems. Specifically due to the asphalt mixture grade, the local mixture temperature is too low, resulting in local leakage pressure, rolling temperature is not uniform, asphalt mixture of the situation. In addition, in the loading and unloading, paving process, due to the emergence of asphalt pavement paving construction of the number of road rollers, the quality of small so that it can not go to the edge, the standard density is not allowed, rolling temperature is not enough, , Resulting in rolling chaos, rolling temperature is not uniform, local leakage pressure, asphalt surface voids appear to be too large or too small, so that the degree of compaction can not be controlled within the specified range, the slate than the poor control , Is not conducive to the asphalt pavement milling paving the effective use of technology.
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