Asphalt pavement on - site thermal regeneration construction quality control essentials

Posted by Liu Yi over 6 months ago

1. regeneration agent spray calculation to be accurate, which is to ensure the quality of asphalt regeneration key. There is too much regeneration agent,[url=http://chipspreadermarket.com/road/4085.html]circular saw for concrete[/url] regeneration of the road will appear pan oil and soft; regeneration agent too little, the regeneration effect is not ideal, the old asphalt aging situation can not be effectively improved, the durability of the road is not good, Paving segregation and compaction difficulties. 2. The heating temperature should be appropriate, the temperature is too high will cause serious aging of the asphalt, but also reduce the efficiency; temperature is too low, the integration of old asphalt and renewable agent difficult, asphalt is difficult to break down,[url=http://chipspreadermarket.com/road/1098.html]air compressor with jackhammer for sale[/url] can not achieve regeneration, but also cause milling The process of aggregate breakage, gradation changes, mixture segregation, compaction difficulties, poor connection between the layers and other issues. Generally controlled between 120-140 ℃ is appropriate. 3. Regenerate the thickness of the road to be uniform. During the construction process to pay special attention to the depth of milling, must be uniform. If the depth of the milling depth is shallow, not only will affect the smoothness of the road, but also affect the accuracy of the amount of renewable agent, resulting in the performance of recycled asphalt mixture is not uniform, seriously affecting the quality of regeneration. To ensure the quality of longitudinal seam. Heating width than the width of each milling width to 20cm above the width to ensure that the longitudinal seam temperature, so that the longitudinal seam is not loose. Ensure compaction quality. As the recycled asphalt mixture is often higher than the new asphalt mixture, and the temperature drop faster,[url=http://chipspreadermarket.com/road/493.html]intelligent bitumen sprayer factory[/url] it is recommended to use large tonnage roller crushing, especially tire roller, the best use of 20 to 30 tons. The roller must follow the back of the paver rolling, so as to avoid the temperature drop too fast and affect the compaction effect.