Figure A6. Removal of individual rings for densitymoisture determination.
Table A1. Densitymoisture results from compaction study.
Dry
Moisture
COV
density
content
as function
(kg/m3)
AASHTO
(%)
of depth
classifi-
NHDOT
cation
classification
Target
Mean
Target
Mean
Density (%)
A-2-4
Silty fine sand
1712
1661
14.5
13.8
1.4
A-7-5
Marine clay
1560
1514
21.0
22.5
0.9
A-7-5
Marine clay
1610
1633
23.5
23.3
0.9
A-7-5
Marine clay
1584
1582
25.0
25.5
1.1
A-4
Silty glacial till
2048
2115
9.0
10.4
0.8
A-1-b
Medium fine sand
1632
1640
13.6
14.3
1.2
A-1-a
Coarse gravely sand
1728
1840
2.4
Table A2. Required number of tamps and kneading pressure to pro-
duce uniform density and moisture in test specimens.
Kneading pressure
Soil
A-4
A-7-5
A-2-4
A-1-b
A-1-a
(psi)
(kPa)
LAYER1
18
18
25*
15**
12
75
517
LAYER2
18
18
25**
15
12
75
517
LAYER3
12
12
25**
15
24
75
517
LAYER4
18
18
25**
15
24
75
517
LAYER5
24
24
25**
15
24
75
517
*Kneading pressure = 150 psi (1034 kPa).
**Kneading pressure = 125 psi (862 kPa).
28
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