Asphalt repair agent construction steps and operation guide
I. Preparation before construction
Pavement assessment
Use professional equipment to detect parameters such as road surface flatness, crack width, asphalt aging degree, etc., to determine the scope of the disease and the repair plan.
Material selection
Crack repair: Use highly permeable silicone asphalt repair agent or caulking glue.
Pot repair: Use cold patch material or hot mix asphalt mixture with repair agent.
Overall renovation: Use polymer modified asphalt repair agent or thin layer of covering material.
Select repair agent according to the type of disease:
Equipment preparation
Sprayer, roller, cutter, sweeper, mixing equipment, etc.
Environmental conditions
Pavement temperature ≥5℃, humidity ≤85%, avoid construction on rainy days.

II. Construction steps
1. Road cleaning
Cleaning: Remove debris, oil stains, loose particles, and use a high-pressure water gun to wash the road surface.
Drying: Ensure that there is no water on the road surface, and the drying time is ≥24 hours.
2. Disease treatment
Crack treatment:
Cracks with a width of ≤5mm: directly fill the cracks.
Cracks with a width of ＞5mm: fill with sealant after grooving.
Pot treatment:
Cut the edges of the potholes, clean the base, fill with hot-mixed asphalt, and compact until it is flush with the original road surface.
3. Repair agent construction
Mixing and adjustment:
If hot asphalt or other materials need to be mixed, stir according to the proportions in the instructions to ensure uniformity.
Adjust the consistency: Some repair agents need to be mixed with water to a paste for easy application.
Spraying/paving:
Use a sprayer to evenly spray the repair agent, or use a paver to spread a thin layer of repair material.
The spraying amount is controlled at 0.4-0.6kg/㎡, and the paving thickness is 1-3cm.
Compaction treatment:
Use a roller or a plate rammer to roll repeatedly to ensure that the repair layer is tightly combined with the original road surface.
4. Maintenance and opening to traffic
Maintenance:
No vehicles are allowed to pass within 24 hours after construction. When the temperature is low, the maintenance time is extended to 48 hours.
Spray water regularly for maintenance to keep the repair layer moist.
Opening to traffic:
After the repair layer is completely cured, gradually open to traffic.
III. Operation Guide
Personal protection
Construction workers need to wear protective equipment such as gloves, masks, and helmets to avoid contact with harmful substances.
Construction specifications
Strictly follow the product instructions and construction specifications to ensure that the material dosage and construction steps are accurate.
Quality control
Real-time monitoring of parameters such as spraying pressure, coating thickness, compaction, and recording of ambient temperature and humidity.
After construction, check the flatness and bonding strength of the road surface to ensure that there are no hollows or cracks.
Environmental protection
Construction waste is recycled in a classified manner and is prohibited from being dumped at will.
Control dust emissions and use sprinkler trucks to reduce dust.
IV. Precautions
Material storage
The repair agent should be stored in a cool and dry place to avoid direct sunlight.
Traffic diversion
Set up warning signs during construction to guide vehicles to detour.
Special situation handling
Suspend construction on rainy days or when humidity is too high, and continue after the weather improves.
If bubbles or cracks appear in the repair layer, remove them and then re-construct.
V. Typical cases
Renovation of urban trunk roads:
Use silicon asphalt repair agent for thin layer covering, the friction coefficient of the road surface is increased by 20% after construction, and the color retention period is ≥5 years.
Scenic area road beautification:
Use the composite process of colored anti-skid particles + repair agent, the anti-skid performance in rainy days is improved by 30%, and the tourist satisfaction reaches 95%.
Through scientific material selection and standardized construction, asphalt repair agent can significantly improve the performance of the road surface, extend the service life, and provide reliable guarantee for road safety and beauty.