Fast Cooling Asphalt Crack Sealant For Municipal Road Urban Pavement Crack Repair

Asphalt Crack Sealant For Municipal Road Urban Pavement Crack Repair

Product Introduction

Asphalt road crack sealant, also named road joint sealant or pavement sealant, is a hot-melt elastic sealing material. It is modified from heavy-duty asphalt with SBS polymer, rubber powder, anti-aging agent and stabilizer. Supplied in solid blocks, it forms an elastic sealing layer after melting and cooling. It blocks rainwater, de-icing salt and silt from penetrating into pavement base and stops crack propagation. It is a key material for preventive road maintenance. Five grades (high-temperature, normal, low-temperature, cold, severe-cold) are available for service temperature -40℃～80℃, complying with JT/T 740-2015 standard.

Application Scope

0 ℃ High-temperature Grade: Suitable for inland regions with scorching hot summers and rarely sub-zero temperatures in winter. The historical extreme minimum temperature in winter is no lower than 0 ℃, and the pavement temperature rises sharply under direct sunlight in summer. It features outstanding high-temperature stability, resisting flowing and tire-sticking under high summer pavement temperature. It is suitable for crack sealing and repair of roads, parks and factory roads.

-10 ℃ Normal Grade: Suitable for areas where the winter extreme minimum temperature is generally no lower than -10 ℃ with moderate seasonal temperature difference. It is a general-purpose grade with high cost-performance, balancing high-temperature performance and ordinary low-temperature crack-resistance.

-20 ℃ Low-temperature Grade: Suitable for cold winter areas where the winter extreme minimum temperature can reach -20 ℃. This grade maintains elasticity at low temperature and is not prone to brittle cracking or peeling-off.

-30 ℃ Cold-climate Grade: Suitable for regions with long and severe winters, where the extreme minimum temperature can reach -30 ℃ and freeze-thaw cycles occur frequently. This grade delivers excellent low-temperature resilience and adapts to large temperature fluctuations, ideal for heavy-duty highway maintenance projects.

-40 ℃ Frigid-climate Grade: Suitable for alpine and extremely cold regions. The winter extreme minimum temperature can be as low as -40 ℃ with large day-night temperature difference and frozen-soil conditions. It retains good elasticity and adhesive force under ultra-low temperature without brittle cracking or joint debonding of sealant. It is widely used for maintenance of expressways and trunk roads in frigid zones.