Construction materials testing
Los Angeles Abrasion Machine
A rotating steel drum in which coarse aggregate is tumbled with steel balls for a fixed number of revolutions. The percentage worn down to fines (the LA abrasion value) measures resistance to abrasion and impact.
- Construction materials testing
- Road and highway construction
- Railways
- Quarries
- Academic labs
PREVENTIVE MAINTENANCE
Maintenance checklist
Each use
- Brush out dust and fines
- Check cover seal and clamps
Monthly
- Check the shelf for wear and tightness
- Lubricate bearings and gearbox as the manual states
- Check the counter
Annual
- Drum speed and abrasive charge check
- Replace spheres that are worn below the minimum mass
- Check drum dimensions and shelf depth
SAFETY
Safety precautions
Before you work on the LA abrasion machine
- Isolate the power before opening the cover or reaching into the drum.
- Use hearing protection; the test is very noisy.
- Steel spheres are heavy; handle them in a tray and wear safety shoes.
- Keep clear of the rotating drum; fit a guard or enclosure.
In LimsPulse · Calibration Management
Keep every LA abrasion machine in control: usage logs, calibration and maintenance schedules, and automatic blocking of overdue instruments.