1.5-2.0
1.5-1.8
1.5-2.5
1.5-2.2
Rounded
Irregular
Flaky
Angular
Aggregates
Cinders
Pozzolana
Ashes
2.4 to 3.2
2.4 to 2.8
2.2 to 3.2
2.2 to 2.8
Marble
Limestone
Granite
Slate