Dual‑use Road Crack Sealant For Asphalt & Cement Concrete Strong Adhesion Joint Filler

Product Introduction

Road joint sealant, also known as road crack sealant or pavement sealant, is a hot‑melt elastic sealing material modified with asphalt as base material, compounded with SBS polymer, rubber powder, anti‑aging agent and stabilizer. It is mainly used to fill road cracks and expansion joints, block rainwater, de‑icing salt and silt from penetrating into subbase and prevent further crack propagation. It serves as a core material for highway preventive maintenance.

Product Properties

1. Bonding Performance: Features strong adhesion to asphalt and cement‑concrete substrates. It resists debonding and peeling under freeze‑thaw cycles and water immersion for reliable sealing and waterproofing.
2. High‑low Temperature Performance: No flowing or tire‑sticking at high temperatures; remains flexible at low temperatures without hardening or brittle cracking. Four grades are available: high‑temperature, normal, low‑temperature and severe‑cold, suitable for ambient temperatures ranging from ‑40℃ to 80℃.
3. High Elastic Recovery: With 30‑70% elastic recovery rate, it adapts to repeated thermal expansion and contraction of cracks, withstands pavement displacement and is not easy to fracture.
4. Weathering and Aging Resistance: UV‑resistant, resistant to de‑icing salt, acid‑alkali corrosion and water damage. It offers 3‑8 years service life under normal outdoor working conditions.
5. Construction Performance: Supplied in solid blocks, melts at 180‑200℃ with favorable fluidity to achieve full and compact crack filling. Fast cooling and curing enables traffic reopening within a short period.
6. Anti‑intrusion and Wear Resistance: Tolerates vehicle tire rolling, avoids material pull‑out by tires and prevents sand and silt from intruding into joints.