The first choice for highway maintenance: weather resistance and construction guide of polyurethane sealant
The first choice for highway maintenance: weather resistance and construction guide of polyurethane sealant
Keywords: road sealant, crack repair, double 85 test
Polyurethane sealant replaces asphalt in highway projects to solve the pain point of road cracking after 1~2 years. Core technical advantages include:
Adaptation to extreme environments: passed the “double 85 test” (85℃/85%RH) and IEC 61215 certification, anti-PID attenuation;
Five construction elements: base surface grinding and degreasing, backing material selection closed-cell foam, injection width-to-depth ratio 2:1, ambient temperature >5℃, maintenance for 72 hours
Case data: After application on the Qinghai-Tibet Plateau Highway, the crack recurrence rate decreased by 70%.