THE DESIGN MIX FORMULA FOR DENSE BITUMEN MACADAM

Optimum Binder Content

4.5

Total Percent of aggregate in the mix

95.5

Total percentage of the mixture

100

Aggregate sizes

20/28 mm

14/20 mm

6/14 mm

0/6 mm

Filler

OBC (%)

Total

Individual percent of aggregate in the mix

12

12

27

43

6

₋

100

Reduced aggregate percentages in the mix by 4.5% optimum binder content

11.5

11.5

25.8

41.1

5.7

4.5

100