Durability-abrasion equipment determines the resistance and durability of mineral aggregates. The LA abrasion machine determines abrasion in crushed rock, slag, crushed and uncrushed gravel. Its enclosed chain drive rotates the drum without a conventional slip clutch. The positive drive delivers greater accuracy and the self-contained worm drive motorized speed reducer has anti-friction bearings and sealed lubrication. The durability index agitator measures the relative resistance of aggregates to producing clay-like fines when mechanically agitated in a special washing vessel. Solution hydrometer measure specific gravity of sulfate solutions to ±0.001 SG. They are available in sodium sulfate and magnesium sulfate. Sulfate soundness sieve holders, solution buckets, and washing buckets are also available.
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