The specific process details of asphalt cold patching materials are as follows: I5I-923-33-I09.
First, clear the pit?
1. Clean the gravel and waste residue in and around the pit to be repaired, and there shall be no mud, ice and other sundries in the pit.
2. After repair, the pit and groove shall be trimmed and cleaned, and the waste residue shall be removed until a solid surface is seen.
Second, fill the pits and grooves.
1. Fill enough asphalt cold patching material into the pit.
2. The center of the pit should be slightly higher than the surrounding road surface until the filler is about l.5cm higher than the road surface, and it will be curved after filling.
3. When the depth of the pavement pit is greater than 5cm, it should be filled in layers and compacted layer by layer, with each layer being 3-5 cm.
Third, compaction.
1. After laying evenly, choose appropriate compaction tools and methods for compaction according to the site environment and the size and depth of the repair area.
2. Such as manual shovel back compaction, manual tamping, vibrating plate tamping and rolling. When repairing a high-grade highway, the periphery and corners of the repair area should be fully compacted.
Fourth, clean.
After the compaction is completed, a layer of stone powder or fine sand can be evenly spread on the surface, and the surface can be cleaned back and forth with a cleaning tool to make the fine sand fill the surface cracks.
Verb (short for verb) accept
1. The surface of the repaired pit and groove shall be flat, smooth and free from wheel tracks, and the corners around the pit and groove shall be dense and free from looseness.
2. The compaction degree of ordinary highway repair should reach more than 93%, and that of expressway should reach more than 95%.