Materials

Classes

Specificgravity (g/cm3)

Unit weight (g/cm3)

Flakiness (%)

Fine modulus

Sand equivalent (%)

Gneiss

5/14

2.801

1.510

9.50

-

-

14/20

2.903

1.520

4.40

-

-

Basalt

5/14

2.883

1.547

5.50

-

-

14/20

2.949

1.588

5.00

-

-

River sand

River sand

3.028

1.670

-

3.05

81.00