Civil Engineering Reference
In-Depth Information
T ABLE 9.12
Examples of Mix Design Measurements and Calculations by the Marshall Method (The Asphalt Institute, 1995)
% AC by
Spec.
Max. Theo.
Wt. of Mix, Height,
Wt. in
Wt. in
SSD
Bulk
Bulk
Sp. Gr.
% Air
%
%
Measured
Adjusted
Flow,
cm
3
Spec. No.
mm
Air, g
Water, g
Wt., g
Vol.,
Sp. Gr.
(loose mix)
Voids
VMA
VFA
Stability, kN
Stability, kN
0.25 mm
3.5-A
1240.6
726.4
1246.3
519.9
2.386
10.9
10.9
8
3.5-B
1238.7
723.3
1242.6
519.3
2.385
10.8
10.8
7
3.5-C
1240.1
724.1
1245.9
521.8
2.377
11.2
11.2
7
Average
2.383
2.570
7.3
14.0
48.0
10.9
7
4.0-A
1244.3
727.2
1246.6
519.4
2.396
9.7
9.7
9
4.0-B
1244.6
727.0
1247.6
520.6
2.391
10.1
10.1
9
4.0-C
1242.6
727.9
1244.0
516.1
2.408
10.3
10.3
8
Average
2.398
2.550
6.0
13.9
57.1
10.0
9
4.5-A
1249.3
735.8
1250.2
414.4
2.429
10.8
10.8
9
4.5-B
1250.8
728.1
1251.6
523.5
2.389
10.7
10.3
9
4.5-C
1251.6
735.3
1253.1
517.8
2.417
10.4
10.4
9
Average
2.412
2.531
4.7
13.9
66.1
10.5
9
5.0-A
1256.7
739.8
1257.6
517.8
2.427
10.2
10.2
9
5.0-B
1258.7
742.7
1259.3
516.6
2.437
9.7
9.7
8
5.0-C
1258.4
737.5
1259.1
521.6
2.413
10.0
10.0
9
Average
2.425
2.511
3.4
13.8
75.2
10.0
9
5.5-A
1263.8
742.6
1264.3
521.7
2.422
9.8
9.8
9
5.5-B
1258.8
741.4
1259.4
518.0
2.430
10.2
10.2
10
5.5-C
1259.0
742.5
1259.5
517.0
2.435
9.8
10.0
9
Average
2.429
2.493
2.5
14.1
82.1
10.0
9
G
b
=
1.030,
G
sb
=
2.674,
G
se
=
2.717,
Notes: AC-20 binder,
Absorbed AC of aggregate: 0.6%,
Compaction: 75 blows
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