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Durability Index measures the relative resistance of aggregates to producing clay-like fines when mechanically agitated in a special washing vessel. Resulting fines material is evaluated using the Sand Equivalent Apparatus, purchased separately. The versatile Gilson SS-18 Agitator runs at 285cpm, and may also be used as a sieve shaker for up to six full-height 8in or 200mm diameter sieves and pan. Holes are provided for securing flanges to the floor or a bench.
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