Special Crack Sealing Adhesive for Joint Sealing and Waterproofing Product Introduction Such joint sealants are divided into two series: hotelt modified asphalt type and cold-applied polyurethane/silane-modified polymer type. In addition to being suitable for road scenarios, they can also cover multi-scenario sealing operations such as bridge expansion joints, airfield runway joints, underground engineering gaps, and roof filling joints. Some special-form products can be