Concrete sidewalk grinding equipment plays a critical role in urban demolition waste recycling and aggregate production. Heavy-duty grinders with diamond segments can process reinforced concrete up to 500mm thick, converting waste into high-quality sand and gravel for construction use.
| Model | Power (kW) | Max. Feed Size (mm) | Output (t/h) |
|---|---|---|---|
| GC-200 | 132 | 400 | 80-120 |
| GC-300 | 200 | 500 | 150-200 |
| GC-400 | 315 | 600 | 250-300 |
1. Primary crushing: Jaw crusher reduces concrete chunks to ≤300mm
2. Secondary grinding: Concrete grinder with magnetic separator removes rebar
3. Screening: Multi-layer vibrating screen classifies 0-5mm sand and 5-40mm aggregate
4. Dust control: Pulse bag filter system meets EPA standards
Q: What’s the lifespan of grinding segments?
A: Approximately 50,000 sq.ft per set under normal concrete conditions.
Q: Can it process asphalt surfaces?
A: Yes, but requires different tooling configuration.
Q: Noise level during operation?
A: Typically ≤75dB with sound enclosures.
A 2019 project processed 15,000 tons of demolished sidewalk concrete using two GC-300 units. The output produced:
– 8,500 tons of ASTM C33 compliant aggregate
– 4,200 tons of masonry sand
Recycled materials were used in new road base construction, achieving 40% cost savings versus materials.
