Road Joint and Crack Sealant
Road crack sealant (a heat-applied pavement sealant) is a key material for highway and municipal maintenance. Composed primarily of SBS-modified asphalt, rubber, and polymer additives, it is used to seal cracks and expansion joints in asphalt and concrete pavements, effectively preventing flow at high temperatures and cracking at low temperatures while maintaining the elasticity needed to accommodate structural movement.
Road crack sealant (a heat-applied pavement sealant) is a key material for highway and municipal maintenance. Composed primarily of SBS-modified asphalt, rubber, and polymer additives, it is used to seal cracks and expansion joints in asphalt and concrete pavements, effectively preventing flow at high temperatures and cracking at low temperatures while maintaining the elasticity needed to accommodate structural movement.
| Item | Unit | Type I | Type II | Type III | Type IV | Type V | Test Method |
|---|---|---|---|---|---|---|---|
| Penetration (25°C, 150g, 5s) | 0.1mm | ≤70 | 50–90 | 70–110 | 90–150 | 120–180 | GB/T 269 |
| Softening Point (Ring and Ball Method) | °C | ≥90 | ≥85 | ≥80 | ≥75 | ≥70 | GB/T 4507 |
| Compression Resilience Recovery Rate (25°C) | % | 30 ~ 70 | 30 ~ 70 | 30 ~ 70 | 30 ~ 70 | 30 ~ 70 | JT/T 740 |
| Viscosity (190°C) | Pa·s | 1–4 | 1–4 | 1–4 | 1–4 | 1–4 | Rotational Viscometer |
| Density |
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