Proportion of lateritic soil

Proportion of granite crushed

Samo formulation index

0/5

5/15

0/15

100

0

S

85

15

S15-0/5

S15-5/15

S15-0/15

80

20

S20-0/5

S20-5/15

S20-0/15

70

30

S30-0/5

S30-5/15

S30-0/15

60

40

S40-0/5

S40-5/15

S40-0/15