What should be attached to the joint asphalt pavement?

27 Nov 2019 09:00

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Sometimes we will find that many asphalt roads have several seams like lines. In fact, this involves a joint work. If the operation is not good, it will affect the quality of the entire road surface. Therefore, it is very strict. You must follow some basic requirements before you can.

Asphalt pavement joints:
1. Asphalt mixing company introduces that the construction of asphalt pavement must be tight and the joints are smooth, and no obvious seam segregation can be produced.

The longitudinal seams of the upper and lower layers should be staggered by more than l50mm (hot seam) or 300~400mm (cold seam).

The adjacent joints of the two adjacent and upper and lower layers shall be offset by more than lm, and the joint construction shall be checked by 3m ruler to ensure that the flatness meets the requirements.

2. The longitudinal joints used in the echelon operation when paving should be made of hot joints, leaving the paved part to be l00~200mm wide and not being rolled, as the reference part of the subsequent part, and then rolling across the seam to eliminate the seam.

3. Introduction of asphalt mixing company When half-width construction or longitudinal cold joints are generated for special reasons, it is advisable to add baffles or add cutters to cut them, or to use the hoe to remove the edges before the mixture is completely cooled. The way of squatting, but it is not advisable to use a cutting machine for longitudinal slitting after cooling.

Before the other half of the shop is added, a small amount of asphalt should be applied, overlapped on the layered layer by 50~100mm, and then the mixture placed on the top half of the layer is shoveled. When rolling, the side is pressed to the center to leave 100~150mm, and then cross The seam is compacted and compacted.

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