Asphalt sealant is a kind of thermal polymeric sealing material with strong bonding force and high elasticity. It is made of matrix asphalt, high polymer, stabilizer, additive and other materials by special processing technology. It is widely used in asphalt pavement crack filling repair and cement concrete pavement joint sealing of expressway, high-grade highway, urban road, airport and so on. Asphalt filling glue can effectively prevent water intrusion, prevent the crack area from loose, edge collapse, crack collapse, pit formation and other phenomena