Slotting, clean-up of cracks, use sealant filling, repairing roads, makes the sealant with the original asphalt concrete pavement good cohesion, forms the effects of the elastic expansion joint and stretch, which closes the road rain (snow) water and debris intrusion, delay and reduce the damage of subgrade, pavement breakage rate, reaches the effect of preventive maintenance;

Slotting and sealing is a common crack treatment method at home and abroad. The main equipment used includes slotting machine, sealing machine and heat lance gun. The sealing material is a sealant (modified asphalt polymer) specially designed for the repair of cracks.