Table 1 Physical properties of soil samples.

From: Amelioration of fat clay treated with CNS and cohesionless soils

Properties

Swelling clay

CNS soil

Kassu soil

Specific gravity

2.68

2.65

2.63

Gravel content, (%) > 4.75 mm

0

0

0

Sand content, (%) < 4.75 mm

3

11

20

Silt content, (%) < 0.075 mm

47

57

80

Clay content, (%) < 0.005 mm

50

32

0

Liquid limit, (%)

50

23

Plasticity Index

26

11

NP

Unified Soil Classification System

CH

CL

ML

Optimum moisture content, (%)

13.8

12.4

15

Maximum dry unit weight (modified Proctor), kN/m3

17.4

18.3

16.9