Low Temperature Asphalt Joint Sealant For‑40℃ Severe Cold Pavement Filling

Low Temperature Asphalt Crack Sealant For‑40℃ Severe Cold Pavement Filling

Product Advantages

1. Strong Adhesion: Firm bonding to asphalt and cement-concrete pavements. Resists debonding under freeze-thaw and water immersion for stable waterproof sealing.

2. Superior High-low Temperature Performance: No flowing or tire-sticking at high temperature; flexible at low temperature without brittle cracking. Multiple grades available for wide service temperature of-40℃~80℃.

3. High Deformation Compatibility: 30-70% elastic recovery rate. Accommodates repeated thermal movement of cracks and resists fracture under pavement displacement.

4. Excellent Weather & Aging Resistance: UV-resistant, resistant to de-icing salt, acid-alkali and water erosion. Service life reaches 3-8 years under normal outdoor conditions.

5. Good Workability: Solid blocks melt at 180-200℃ with favorable fluidity to achieve full and compact crack filling.

6. Fast Curing: Quick cooling-curing enables fast traffic reopening and short road closure time.

7. Wear & Rolling Resistance: Withstands repeated tire loading, prevents material pull-out and blocks silt intrusion into joints.

8. Cost-effective Preventive Maintenance: Seals cracks to protect pavement base and slow down road deterioration, cutting heavy repair costs.

Construction Process

1. Crack Pretreatment: Remove dust, gravel and loose aggregates by crack cleaner and high-pressure air blower. Keep cracks dry and clean; dry wet areas completely.

2. Material Melting: Load modified asphalt sealant into melter, heat to 180-200℃ and stir evenly. Avoid local over-heating and carbonization.

3. Crack Pouring: Inject molten sealant into cracks via pouring gun for compact filling. Keep material surface 1-2 mm above pavement to offset shrinkage upon cooling.

4. Cooling & Curing: Allow natural cooling until fully cured. Prolong cooling time in low-temperature conditions.

5. Cleaning & Traffic Opening: Trim excess sealant on pavement. Reopen traffic after full curing.

Application Scenarios

1. Asphalt Pavements: Repair and sealing of transverse and longitudinal cracks for highways, municipal roads and rural roads.

2. Cement-concrete Pavements: Filling expansion joints, construction joints and settlement joints.

3. Bridge Projects: Sealing of bridge deck cracks and expansion joints.

4. Industrial Sites: Factory roads, parking lots and plaza pavements.

5. Special Sites: Airport runways and freight yard pavement joints.

6. Maintenance Works: Preventive road maintenance, old road reconstruction and sealing for joints between old and new pavements.