Asphalt pavement construction preparation

[quangongzi]

Grassroots supervision by the acceptance of qualified engineers, the detection indicators are in line with standards and design requirements. Before the construction with a strong brush cleaning machine, after the artificial broom cleaning, and finally with a forest hair dryer thoroughly remove the primary surface debris and dust, to ensure that no debris on the surface, no loose particles, back to fill the empty hole to flatten the compaction; Soil, mortar and other local pollutants to be used to clean brush machine clean, artificial and water tank washing with the surface until the surface is completely dry and then construction. On the bridge and culvert, channel guard and other structures to block the protection, to avoid pollution. Check the status of construction machinery, asphalt sprayer tubing, nozzle inspection to clear. Permeable oil processing The high-permeability emulsified asphalt for construction of this contract section shall be tested by laboratory sampling and approved by the supervision engineer before being used for construction.Double Steel Roller - Road Machinery Equipment Manufacturers - Doan Machinery

Through the layer of oil sprinkle oil through the cloth before the cloth, each 10m placed on both sides of the pile, sprinkle with white after the sprinkler, when strictly according to gray cloth sprinkling cloth to ensure that the width of cloth. Using their own with a heat transfer oil heating system and automatic control of the amount of intelligent asphalt spraying cloth spraying, according to the results of the test spray to select the appropriate nozzle, spray speed and the amount of cloth. Spraying temperature control at 60 ℃ or more, the amount of cloth: 1kg / ㎡, sprinkler speed: 8km / h. Sprinkle cloth must be in the form of mist, the process of spraying a person command vehicle, through the oil layer to spray evenly, shall not be missing spilled strip; spill spill should be promptly fill the spill, Broom sweep.
Permeable bituminous material through the use of better emulsified asphalt, the technical requirements should be consistent with the specification. Through the use of asphalt spreader construction, after the completion of the construction of the base, to be a little dry after the surface layer of oil spilled cloth. In order to ensure that the structure near the spray area and the tree surface from pollution, should be used to protect the cover method.
Asphalt sprinkler shall be equipped with nozzles for spraying asphalt with different consistency, check the oil pump system, oil pipeline, oil gauge and heat preservation equipment of the sprinkler before construction. Sprinkle on the road by try to determine the spray speed and the amount of oil spilled. Each spray should be maintained before the nozzle clean, smooth pipeline, fuel injection angle the same. In order to ensure uniform asphalt sprinkler, fuel injection pipe length should be less than 3m. Spray cloth, in strict accordance with the provisions of the uniform amount of spray in the asphalt sprayer spray can spray spray device, spraying excessive, spill, sprinkle should be corrected. When faced with fog, windy weather, rain and the temperature is below 10 ℃ shall not be carried out when the cloth operation.
After spraying the asphalt through the layer, if not immediately pavement seal, and the need to open up traffic, should be spread stone and coarse sand as adsorbent material, and double-drum roller pressure regulator again. In the laying of slurry under the sealing layer will loose particles removed.
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