To build a municipal textbook "on lap two between the amplitude width should be 30~60mm, and should avoid Lane wheel tracks, the upper and lower lapping position should be staggered over 200mm", this sentence in the "overlapping" two pieces between the width of the 30~60mm should be able to understand, to avoid the drive wheel tracks is not clear after paving paver driveway wheel tracks couldn't come out? What is not clear is, "upper and lower lap position should stagger 200mm above". What is the joint position between upper and lower layers? Don't you just put it on the grass floor? Do you mean the overlap between the middle and upper layers?
1. according to the construction requirements, set the width of the paving, paving thickness, paving speed and vibration vibration and other related parameters. 2. after the start of paving, paving the top lorry at the grassroots level, while traveling on the road side of the mixed material on the receiving hopper. 3. the mixture in the receiving hopper is transported to the rear of the mainframe by the scraper conveyor. 4. the mixture which is sent to the back of the mainframe is conveyed to both sides of the whole ironing device by the screw conveyor. 5. the ironing device moves forward under the traction of the main engine. The mixture is compacted and compacted to form a flat and dense paving layer for further compacting and forming of the roller. 6. automatic or manual control during paving operation to ensure the width, thickness, cross slope and degree of compaction of the paving. Asphalt paver working process of new telescopic asphalt paver with the rapid development of China's highway construction, road construction machinery for the increasing demand, the asphalt paver road machinery as one of the most important, in highway construction has played an irreplaceable role. The new telescopic asphalt paver is widely used in the field of road construction due to its flexible ironing plate and suitable for the construction of different width of pavement.
In the teaching material, the lane wheel track belt refers to the area where the wheel trace is relatively centralized after the road is paved. Generally, there are 80~100cm marks on the carriageway markings, not the wheel traces of the paver. This is mainly to consider the lane wheel track belt is the most concentrated area of driving load, where the construction joints are easy to cause longitudinal cracks in the road.Because the road generally uses layered paving, from down to up in turn below paving layer, middle layer and upper layer, the three layer materials are unified while asphalt mixture, but the mixture size is different, and the upper layer is generally used in modified asphalt. Therefore, the lap joint problem should be considered in the process of delamination and spread. The upper and the lower lap joints refer to the lap position of the lower layer and the middle surface layer, and the middle layer and the upper layer overlap positions to stagger.
