Asphalt cold patching construction
The construction of asphalt cold patching material includes two steps: pit and groove renovation and filler leveling, in which pit and groove renovation includes renovation, slag removal, blowing and oiling, and filler leveling includes layered filling and molding, and finally it needs compaction. Compaction methods include plate rammer, aluminum platen and small roller, and off-highway pavement can be used for driving and rolling.
Pit and groove repair method
The pit and groove repairing method comprises two steps. Step one, clean the pits. When the pit and groove are large, hard stubble should be left around and at the bottom, which is more conducive to exerting the bonding type of Jiage asphalt cold patching material. Step 2, fill the pit with a proper amount of cold patching material of asphalt. If the pit depth is more than 8cm, it needs to be compacted by layers. The virtual paving thickness of filler depends on the degree of compaction, which is generally 1-2cm. It is required that the repair surface should be flat, smooth, free of wheel tracks and loose edges.
Pavement emergency repair method
When excavating the pavement due to large area damage or pipeline rupture, the subgrade should be solidified and compacted to have corresponding bearing capacity, and then spread and compacted in layers. In this case, it needs to be compacted with a plate rammer or a roller.