Geotechnical parameters

0/20 mm class

CEBTP specifications (1984)

Subbase layer

Base layer

Particles ≤ 0.080 mm size (% by weight)

13.5

5 - 30

5 - 25

Liquid limit (LL)

32.5

<40

<35

Plasticity index (PI)

18.5

5-22

5-20

Methylene blue values of the soil (MBV) (g/100 g)

0.17

<5

<5

Maximum dry density (gd max (kN/m3)

18.9

18.0 - 20.0

21.0 - 23.0

CBR index at 95% of the OMP

53

30 - 60

≥80

Classification in (LCPC/SETRA, 2000)

B4