Study on the Mixed Materials Proportion of Stratum Based on the Modelling Experiment

Table 7

Instrument of the density test.

Name	Ring knife	Balance	Vernier caliper	Compaction meter
Parameters	Internal diameter, 6–8 cm; height 2 cm	Accuracy, 0.1 g	Accuracy, 0.02 mm	Diameter,100 mm; height, 127 mm; volume, 997 cm^3