Quality control of in - situ thermal regeneration of asphalt pavement
| wangkiky 2471 | ||
|
(1) regeneration agent spray calculation to be accurate, which is to ensure the quality of the key asphalt regeneration. Too much renewable agent, renewable road surface will appear pan and soft oil; too little regeneration agent, regeneration is not ideal, the old asphalt aging can not be effectively improved, the durability of the road is not good,[url=http://roadroutercrack.com/blog-new/849.html]lasting value bridge seamless expansion joints resellers[/url] but there will be non-stick particles, Paving segregation and compaction difficulties and other issues.
(2) heating temperature should be appropriate, the temperature is too high will cause severe aging of the asphalt, but also reduce the effectiveness; temperature is too low, the old asphalt and regenerant fusion difficult, difficult to break down asphaltene, not regeneration,[url=http://roadroutercrack.com/blog-new/6630.html]automatic municipal sanitation equipment purchase[/url] The process of aggregate crushing, grading changes, the mixture appears segregation, compaction difficulties, poor connection between layers and other issues. The general control is between 120-140 ℃. (3) regenerate the road surface thickness to be uniform. Construction process to pay special attention to the depth of milling, must be uniform. If the depth of milling depth when the shallow, not only will affect the road surface roughness,[url=http://roadroutercrack.com/blog-new/3286.html]Road obstacle clearance machinery[/url] but also affect the accuracy of the amount of renewable agent, resulting in uneven performance of recycled asphalt mixture, seriously affecting the quality of regeneration. (4) to ensure the quality of longitudinal seam. Heating width than the width of each side of the milling width to be more than 20cm, in order to ensure the vertical seam temperature, so that the longitudinal seam dense without loosening. (5) to ensure the quality of compaction. As the recycled asphalt mixture stiffness is often higher than the new asphalt mixture,[url=http://roadroutercrack.com/blog-new/4190.html]road pothole construction method[/url] and the temperature dropped rapidly, we recommend the use of large tonnage roller compacted, especially the tire roller, the best use of 20 to 30 tons. Roller must follow the paver behind the rolling, so as not to material temperature drop too fast and affect the compaction effect. |
||
