Asphalt Crack Grooving Cutter

Project Background: Rural road crack-treatment project in suburban Buenos Aires, Argentina. Total crack-routing length 18 km. Tight procurement budget, loose local dust-control requirements for countryside sites. Both asphalt and concrete pavements with widely scattered cracks. Works consist of routing followed by preventive crack sealing.

Project Location: Suburban county-town road network, Buenos Aires, Argentina

Challenges

1. Limited capital budget, dust-collection function not required, target to lower equipment purchase cost.

2. Crack depth & width varied. Old machines with fixed groove size produced poor-quality cuts, leading to high sealant peeling & re-repair rate.

3. Legacy machines had no emergency stop. Operator-slipping created mechanical-injury hazards for hand-push operation.

4. Crack spots were widely scattered. Heavy equipment caused long transfer delays. Lightweight hand-propelled router was required.

5. Both asphalt and concrete pavement existed on-site, single-machine multi-surface capability was expected.

Solution: Four units of FND-K25 basic crack router were deployed. Kohler engine with 3-stage air filter handled dusty field environment. Adjustable 0-3 cm depth & 1-5 cm width created qualified sealing grooves. Tilt-activated 7-second emergency brake protected operators. Hand-push mobility served scattered work locations. Each unit performed routing on asphalt and concrete and cooperated with crack fillers.

Project Outcome: Full routing scope completed with lower procurement investment. Emergency-brake function mitigated injury risk. Well-shaped grooves guaranteed sealing quality. Compact hand-push design fitted scattered rural sites. 18 km routing work finished on schedule. Post-repair sealing performance was qualified and re-repair rate dropped obviously.

Why do we need the road crack cutting machine when repairing road cracks?

Whether to first groove and then use pavement sealant to repair road cracks mainly depends on the width and severity of the cracks, and corresponding treatment methods should be determined based on the severity of the defects.

Based on our past construction experience, if the width of a road crack is more than half a centimeter, it must be treated with slot expansion. After the width and depth of the slot expansion meet the requirements, the width should be 1-1.2 centimeters and the depth should be 1 Remove the aged and loose old gravel at the edge of the crack (2-1.5 cm), blow it dry, and make sure the crack is kept dry. Then, use road sealant to fill the crack and repair it. This treatment can avoid the weak bonding between the road sealant and the crack wall edge, which affects the sealing and waterproofing effect.

If the width of road cracks is less than half a centimeter, other corresponding measures should be taken to deal with it.