|
Fines (% passing sieve no 200)
|
80.1
|
68.4
|
81.4
|
90
|
90–92
|
29–46f
|
|
Plastic limit
|
30.0
|
33.0
|
38.4
|
27
|
17–23
|
18–23
|
|
Liquid limit
|
52.0
|
48.0
|
52.8
|
72
|
53–68
|
40-57
|
|
Plasticity index
|
22.0
|
15.0
|
14.4
|
45
|
36–45
|
22-34
|
|
Liquidity indexe
|
−0.2
|
−1.2
|
−0.7
|
−0.04
|
0.14-0.11
|
0.02 to −0.08
|
|
Compression index Ccd
|
0.378
|
0.342
|
0.385
|
0.558
|
0.387–0.522
|
0.27–0.423
|
|
AASHTO classification
|
A-7-5(20)
|
A7-5(11)
|
A-7-5(15)
|
A-7-6
|
A-7-6
|
A-6(14) and A-7-6(25-27)
|
|
USCS classification
|
OH
|
MH
|
OH
|
CH
|
CH
|
CL and CH
|
|
Maximum dry density (Mg/m3)
|
1620.0
|
2020.0
|
1700.0
|
1510
|
1830–1890
|
N.L.
|
|
Optimum moisture content (%)
|
14.6
|
8.6
|
16.6
|
22
|
12.0–12.5
|
N.L.
|
|
CBR (%) (after 24 h soaking)
|
26.8
|
20.6
|
7.0
|
0.68
|
38–55
|
3
|
|
Free swell (%)
|
N.D
|
N.D
|
N.D.
|
50
|
48–52
|
N.L.
|
|
Specific gravity
|
N.D
|
N.D
|
N.D.
|
2.55
|
2.42–2.56
|
2.56 -2.79
|
|
Colour
|
Black
|
Yellowish
|
Dark grey
|
Grey
|
Bluish–Brownish
|
Red
|
|
Natural moisture content (%)
|
26.3
|
15.6
|
27.8
|
25
|
22-28
|
17.5–25.8
|
|
pH
|
2.27
|
6.97
|
4.28
|
6.83
|
N.L.
|
N.L.
|
|
Unconfined compressive strength (kN/m2)
|
784.19
|
674.53
|
350.57
|
400
|
N.L.
|
100.4
|
