Uniform heating of the asphalt to a specified temperature prohibits the use of asphalt that is bubbling or heating above 185 ° C. Mixing warehouse temperature should meet the relevant specifications, the mixing time is generally not less than 36 seconds to mix the mixture evenly, all the mineral particles wrapped all the asphalt binder for the degree. Asphalt mixture factory temperature control in the use of SBS modified asphalt 175 ℃ -195 ℃. For the carbonization, blistering and water mixture to be abolished, with flowers, white spots, segregation and agglomeration of the mixture is also abolished.
Paving machine start padding and other spacing between the three pieces of wood, the thickness of the asphalt concrete compaction thickness × loose pile coefficient, and the ignition screed, so that the temperature reaches 65 ℃ above to start. Asphalt concrete paving with a ABG425 paver operation paving, paving shop when the paver speed should be uniform, the speed of the mixing and transport capacity to determine, at the same time to meet the regulatory requirements. And paving construction can not change the way or downtime to wait for such phenomena, to prevent the impact of road surface roughness. Normal paving, the mixture temperature of not less than 150 ℃, not more than 165 ℃, the construction temperature below 10 ℃, to stop construction. For SBS modified asphalt and fiber, the mix paving temperature should be> 160 ° C, not more than 175 ° C, and the mix temperature is measured when the truck is unloaded onto the paver.Road Repair Equipment - Doan Machinery
The rollers should normally follow the paver, and the vibratory roller should be as much as possible to reduce the amount of water and maintain a reasonable compaction speed. Rolling equipment used for the tire roller, double wheel double drum wheel. Rolling from the low side, parallel to the middle of the road, double roller overlap each time about 20cm, tire roller to stagger the two ferry. Roller speed should be uniform and meet the requirements, and not in the new shop on the road to stay, turn or brakes. During the rolling process, the roller begins to spray the mist to prevent the wheel from falling until the wheel does not appear to stop sprinkling to ensure that the asphalt mixture is crushed at a higher temperature. At the same time set up someone to remove the material and find the material, for the roller can not roll the place, the application of manual compaction or other compact compaction equipment compaction.
During construction, to ensure that no longitudinal cold joints are used, the full width of the paving is used. For the horizontal seam processing, you can first use 3m straight foot to take the joint asphalt concrete flatness, do not meet the requirements of part of the crossed, and then cut with a vertical cutting machine, the next paving before the same marked with the same label thermal modification Asphalt sticky oil to facilitate the connection. Upper and lower interlayer spacing between the joints should be kept more than 3m. Rolling along the transverse joints, each rolling to the new layer into the 15-20cm, until the entire roller are pressed on the new layer, before rolling along the direction of the center line. After the asphalt concrete surface cooling can open the traffic, while in the paving 12 hours after drilling with a core sampling machine to obtain the core sample to measure the degree of compaction, thickness, etc., and by testing the measured oil-stone ratio.
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The rollers follow the paver
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