The Sand Equivalent Hand Crank Shaker has 8in (203mm) throw. Geared manual crank gives 3cpm of clear plastic cylinder per revolution of crank. Operator cranks at one turn per second until the digital counter reaches 131 cycles. Cylinder mounts to fixed-travel guide rod by base pin and threaded clamp holder on stoppered end. Base has holes for mounting. Dimensions: 30x14x10in (762x356x254mm), LxWxH.
The Sand Equivalent Test indicates the relative portion of undesirable clay-like fines and dusts that occur in granular soils and fine aggregates passing the No.4 sieve. The Sand Equivalent Shaker is also used in the Durability Index Test which measures the relative resistance of an aggregate to producing such undesirable clay-like fines when subjected to degradation. In either application, the sample to be tested is placed in special solution of calcium chloride, formaldehyde, and glycerine. After shaking the cylinder with a Sand Equivalent Shaker, it is allowed to stand for a 20 minute sedimentation period. Readings are taken on the cylinder scale for the level of the top of the clay suspension, and for the sand level. The Sand Equivalent is the sand reading divided by the clay reading x 100.
ASTM D 2419