How to operate the artificial paving concrete at track and field site

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Due to the need for site layout, there are many circular arc curves and intersections of the track and field, as well as the restrictions on the perimeter of the site. It is impossible to straighten the operation of the asphalt concrete paver. Therefore, the asphalt concrete paver stops and shifts in most locations. The phenomenon left many dead spots on the scene. This place requires manual paving operations. Due to the need for plastic thickening areas, the asphalt concrete in these thickened areas also needs to be manually paved.

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In the manual paving operation, the labor organization participates in the work for each class of 22 people, and generally about 100 to 120 tons of asphalt concrete is better. Requires no less than 10 skilled workers.

The manual paving operation at the track and field site must be measured by the surveyor and the flat pile should be measured in a 5mx5m square grid. Each flat pile is temporarily piled with asphalt concrete, with an area of ​​20cm x 20cm, and the height is based on the designed value of the high puffing paving. When working in a small area in a thickened area, nails can be nailed outside the thickened area, and the value of the designed high-gauge loosening coefficient can be measured on the steel nail.

The manual paving operation is carried out on a large pile of asphalt concrete from a dump truck, transported to a paving site with a cart or a small loader, and then manually dispersed on a substratum. Spread, can not use the method of Yang Yan, to prevent the mixture particles scattered, but also to prevent cooling. After being scattered, use artificial steel rakes to push and level them. If there is a higher place, use the action of the puller to level out the excess asphalt concrete; if there is a lower place, use the action of the booth to level the low place and the construction personnel will use a push-pull method. Leveling work.

The loose paving factor of artificial paving operation is 1.25~1.5 for asphalt concrete and 1.2~1.45 for asphalt macadam. The upper and lower limits are obtained from field tests, the upper limit is adopted when paving is loose, and the lower limit is adopted in real-time paving.

Manually used tools should always remove the sticky asphalt concrete on the surface. The method is to use the fire box to bake. Every working day, clean the tools before work.

During the construction process, in order to prevent accidents caused by injuries to workers, operators should wear heavy-duty work shoes or insulated protective shoes and should wear protective gloves. Summer is not allowed to wear shorts and slippers are not allowed.

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