Proportional Caliper Device
The Proportional Caliper Device is used to determine the percentages
of flat, elongated, or flat and elongated particles in coarse aggregates.
Specific procedures for conducting this test are described in ASTM
D 4791. Made of plated steel, the 8 x 16 in (20.3 x 40.6 cm) base
plate has four rubber feet for added stability. Three positions
control the various ratios
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ASTM D 4791 |
