Civil Engineering Reference
In-Depth Information
Volume (m
3
)
Mass (Mg)
Air voids
Asphalt
binder
0.039
0.122
0.119
2.319
0.842
Aggregate
FIGURE SP9.2
2.441
V
t
1.000
Determine volume of components:
0.122
1.023
=
0.119 m
3
V
b
=
Since the problem statement specified no absorption,
V
be
=
V
b
2.319
2.755
=
0.842 m
3
V
s
=
V
s
=
Volume of stone
1
aggregate
2
Determine volume of voids:
0.039 m
3
V
v
=
V
m
-
V
b
-
V
s
=
1
-
0.199
-
0.842
=
Volumetric calculations:
V
v
V
m
0.093
1.00
100
VTM
=
100
=
=
3.9
%
V
v
+
V
be
V
m
0.039
+
0.119
1.00
VMA
=
100
=
100
=
15.8
%
V
be
V
be
0.119
0.119
VFA
=
100
=
0.039
100
=
75
%
+
V
V
+
The density and void analysis requires using the effective specific grav-
ity of the asphalt-coated aggregate, determined from the theoretical maxi-
mum specific gravity of the mix (ASTM D2041). The weight of the loose
mixture specimen in air
A
is measured along with the weight of the mea-
surement bowl filled with water
D
and the weight of the bowl containing the
asphalt mix and filled with water
E
. When the loose mixture specimen is
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