Item 6.4 defines a metal mold for the cone test. What would be the effect on the

Question

Item 6.4 defines a metal mold for the cone test. What would be the effect on the calculated SG if the cone had the same upper and lower diameters as the cone described in ASTM C 128 but was twice as tall? Mold and Tamper for Surface Moisture Test-The metal mold shall be in the form of a frustum of a cone with dimensions as follows: 40 plusminus 3-mm inside diameter at the top, 90 plusminus 3-mm inside diameter at the bottom, and 75 plusminus 3 mm in height, with the metal having a minimum thickness of 0.8 mm. The metal tamper shall have a mass of 340 plusminus 15 g and a flat circular tamping face 25 plusminus 3 mm in diameter.

Explanation / Answer

This frustun cone will change into cylinder

sg = 500/v-m

The densiy of will change .

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