Tack coat construction

In line with one of the following conditions should be spray sticky layer.
Two-layer or triple-level hot mix and laid asphalt mixture of paved road in the upper deck, below the layer of asphalt had been contaminated.
Additional layer of asphalt is paved on the old asphalt pavement layer.
Paving asphalt on the cement concrete road surface.
Viscous layer of asphalt to use the asphalt distributor spraying, when used in surface-treatment or penetration of the asphalt road surface spray nozzle can not guarantee uniform spraying should replace the nozzle. In the curb, rain water intake, check local wells application artificial Brushes brushing.
Spraying sticky asphalt layer should meet the following requirements:
Sticky asphalt layer should be evenly onto cloth or brushing,  excessive spraying be curettage.
There are dirt roads to be cleared away, the adhesion dirt to brushed  with net water, then spray after surface to be dry .
When the temperature below 10 ¡æ or when the road is wet, sticky layer of asphalt can not sprayed.
After spraying sticky layer of asphalt, mixture transport cart is strictly prohibited in addition to vehicles, pedestrians through.
Sticky asphalt distributor layer after layer of asphalt paving immediately, but should be breaking emulsified asphalt, paving after the water evaporated.
Hot asphalt gravel layer closure