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Selection of construction machinery

 
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MessagePosté le: 04/01/2017 11:33:49    Sujet du message: Selection of construction machinery Répondre en citant

?Synchronous crushed stone seal construction, must provide detailed asphalt binder, gravel test report, meet the technical requirements before construction. Synchronous gravel seal construction must use special machinery construction, pre-wrapped equipment must have a precise measurement of the electronic measurement system and can record and display the amount of mineral materials, asphalt, etc., must be calibrated at the scene before use. Synchronous gravel seal construction, the health period of the temperature should be higher than 15 ��; not in the rain construction. In the construction of synchronous gravel seal, the traffic control at the construction site shall be carried out strictly in accordance with the JTG H30, so as to ensure the safety of the maintenance work.
Before construction, should conduct a comprehensive and thorough investigation and thorough treatment. For subsidence less than 4 cm, the surface is first milled with a milling machine and the debris, debris, spray or brushing of the asphalt layer is removed, and the part of the subsidence is filled with bituminous gravel to be flush with the original road surface and compacted . For roadbed subsidence caused by road surface greater than 4cm of subsidence, should first deal with roadbed. The roadbed strength of local insufficient sections should be reinforced, and then layer by layer to repair the surface layer. Cracks in the sections, should be pre-filling irrigation treatment. For cracks below 2mm, can not be special treatment, the use of asphalt gravel sealing operations in the spraying of high temperature asphalt layer, you can seal this type of crack; for 2 ~ 5mm small cracks, should be used pouring or wiping process For cracks of 5mm or more should be used to expand the seam clean, dry after the sealing process; for mild lumpy cracks in the road section, first remove debris in the cracks, evenly sprayed emulsified asphalt, and then spread evenly 4-6mm dry and clean Of the stone, and finally with 8-10T steel wheel roller press into the cracks in the stone. The original road surface of the crowded package type disease should be preceded by milling machine milling machine.
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MessagePosté le: 04/01/2017 11:33:49    Sujet du message: Publicité

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