Asphalt mixture requirements from quangongzi's blog

Asphalt mixtures require the use of larger tonnage dump trucks. From the storage silo to the unloading car on the loading, 3 times loading, the first by the front of the car, the second by the rear of the car, the third loading the middle of the compartment to prevent the thickness of aggregate separation.

At the beginning of paving, at least five cars in front of waiting for discharge, to ensure the continuity of paving and road surface roughness. At the same time require the transport vehicle compartment floor coated with thin layer to prevent asphalt bonding of the isolation layer or anti-blocking agent. Paving the process of transport truck paver 100 ~ 300mm before the stop, waiting for the gap, pushed forward by the paver began to slowly discharge, to avoid impact paver.

Due to mixing field from the paving site distance is different, transport cargo vehicles must be covered with sheet insulation, rain, pollution.Road Repair Machines

The paving machine starts with three pieces of wood, such as the thickness of the concrete, as well as the thickness of the asphalt concrete compaction thickness, and the ignition screed so that the temperature can reach more than 100 ∀. Paver must be 1 ~ 3m / min speed, uniform, continuous uninterrupted paving, midway can not be variable or downtime to wait for the phenomenon, to prevent the impact of road surface roughness.

Asphalt mixture paving the spread of the temperature shall not be lower than the specified temperature, the paving the loose pile coefficient can be determined according to the test stand. Before paving, do asphalt sticky layer of inspection and cleaning: the surface of the surface after the milling of floating mineral materials, surface debris clean.

Milling Roadway dust removal equipment should use high-power air compressor dust blowing dust, so that the road cleaning dust quickly blown to the progress of the follow-up process to ensure clean and clean. The use of high-pressure air to the final blow to the milling slot to bring quality protection. And should try to avoid the spill of diesel, damage to the road, transport trucks and tools can not be used to clean the strict control of the asphalt mixture of various parts of the temperature, is conducive to ensuring the quality of asphalt concrete pavement construction. The factory temperature is higher than the specified temperature, paving less than the specified temperature of the asphalt mixture to be abolished. Asphalt concrete paving, should follow the rolling, control a good rolling times, and can not overpressure. Pavement asphalt concrete surface should be more static compaction, less vibration compaction, especially the milling side of the groove, because the vibration of the exciting force will be the edge of the original slab groove, resulting in paving because there is no solid wall Role and soon damaged. Vibration compaction is only 1 to 2 times after static pressure. Should be carefully dealt with vertical and horizontal joints and construction joints, to ensure that the new pavement and the original layer of dense joints, flat. It is forbidden to have a roller on a completed or rolling section