Table 2.

Particle size analysis.

1 ~ 0.5 mm	0.5 ~ 0.25 mm	0.25 ~ 0.1 mm	0.1 ~ 0.075 mm	0.075 ~ 0.005 mm	<0.005 mm	Unevenness factor Cu	Curvature coefficient Cc
0.22%	1.33%	3.87%	5.24%	70.42%	18.92%	8.99	1.28