Geology Reference
In-Depth Information
Moisture content can be calculated using equation [1]
M
2
M
3
w
100
(14-4)
M
3
where:
w
moisture content of material from test hole, %
M
2
moist mass of moisture sample, g
M
3
dry mass of moisture sample, g
Note
—Equation (14-4) is an alternative form of Eq. (4-1).
[B] In-Place Density and Unit Weight
The dry mass of material from the test hole can be calculated using the
equation
M
4
M
5
(14-5)
0.01
w
100
1
21
2
where:
M
5
dry mass of material from test hole, g
M
4
moist mass of material from test hole, g
w
moisture content of material from test hole, %
The volume of the test hole can be calculated using the equation
M
6
M
7
r
1
V
(14-6)
where:
V
volume of test hole, mL
M
6
mass of sand used, g
M
7
mass of sand in funnel and base plate, g
ρ
1
density of sand, g/mL
Dry density (in place) of the tested material can be calculated using
the equation
M
5
V
r
2
(14-7)
where:
ρ
2
dry density (in place) of tested material, g/mL
M
5
dry mass of material from test hole, g
V
volume of test hole, mL
The dry unit weight (in place) of the tested material can be found by
g
2
62.43
r
2
(14-8)
where:
γ
2
unit weight in lb/ft
3
ρ
2
density in g/mL
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