Key Considerations for Effective Road Crack Sealing Application

Asphalt road surface grooving and filling technology:

Key Considerations for Effective Road Crack Sealing Application

To ensure optimal performance and longevity of road crack sealing, strict adherence to the following four critical aspects is essential:

I. Optimal Construction Timing is Crucial

Extensive industry experience and field testing by Tongda Road Technology demonstrate that the primary cause of sealant failure is inadequate bonding between the crack sealant and crack walls. This is primarily linked to:

• Sealant technical performance

• Thoroughness of groove cleaning

• Ambient temperature during application

Therefore, selecting the appropriate construction season and a crack sealant specifically formulated for local climate conditions is paramount.

II. Utilize Qualified Crack Sealing Equipment

Tongda Road Technology's crack sealing machines, refined through years of application and technical upgrades, offer distinct advantages:

1. Advanced Pressure Control & Precise Hydraulics: Enables precise material application tailored to crack characteristics, ensuring uniform filling and compaction while preventing underfilling or overfilling.

2. High Melting Capacity: Efficiently prepares sealant material.

3. Automatic Temperature Maintenance: Ensures consistent, optimal sealant viscosity during operation.

   
   

III. Select High-Quality Crack Sealant

The chosen sealant must possess:

1. Excellent Penetration: Fills cracks effectively.

2. Superior Interface Adhesion: Bonds strongly to crack walls.

3. Low-Temperature Flexibility/Elongation: Resists cracking in cold weather.

IV. Strictly Follow Construction Procedures

Adhere meticulously to the specified construction process:

1. Thorough Pre-Cleaning: Cracks must be meticulously cleaned before sealing.

2. Adequate Cooling Time: Allow the sealant sufficient time to cool and set completely.

3. Debris Removal: Sweep away all loose debris from the road surface.

4. Traffic Control: Only open the repaired section to traffic after completing steps 2 & 3.