Cold Patch Material Construction Method:
1. Cleaning the Pit: For general repairs, clean the pit and surrounding area of ​​the pit to be repaired, removing all gravel and debris. The pit should be free of mud, ice, and other impurities. When repairing excavations for highways and municipal roads, the repaired holes and trenches should have neat cut edges, and debris should be removed up to the solidified surface.

2. Filling the Pit: Fill the pit with sufficient cold patch material until it is approximately 1.5cm higher than the ground level. For highways and general roads, the material input can be increased by approximately 20% or 10%. After filling, the pit should be higher than the surrounding road and have an arc shape.
If the thickness of the damaged pit exceeds 5cm, it should be filled every 3 layers—5cm per layer—compacting each layer.
3. Compaction: After evenly spreading the material, select appropriate compaction tools and methods based on the site conditions, the size of the repair area, and the thickness of the pit. Examples of compaction methods include: manual backing, manual tamping, vibratory plate compaction, flat aluminum plates, truck tires, road rollers, or pavers.
4. Acceptance: The repaired pothole surface should be smooth, flat, and free of wheel marks. The area around the pothole and corners should be well compacted without loosening. The compaction degree should generally reach 93% or higher.
Precautions:
1. When constructing at low temperatures, the pothole should be stored in a warehouse above 5℃ for 24 hours.
2. When repairing high-grade highways, the area around the repair site and corners should be fully compacted.
3. For economic reasons, on-demand repair methods will be used instead of traditional centralized repair methods.