TM 5-822-13/AFJMAN 32-1018
Table 6-2. Bituminous Concrete Moduli for Each Month for ABC Pavement Design Based on Bituminous Concrete Strain.
Average†
Daily Mean
Design††
Dynamic†††
Pavement
Air
Modulus
Temperature
Temperature
|E*|
103 psi
Month
degrees F.
degrees F.
54
Jan
47.5
1,600
57
Feb
50.7
1,400
64
Mar
58.0
1,060
66.1
72
700
May
80
73.3
460
Jun
80.5
88
280
230
Jul
83.1
91
230
91
Aug
82.7
Sep
77.3
85
340
Oct
67.2
73
670
Nov
56.2
61
1,200
Dec
49.3
56
1,500
†For fatigue damage of bituminous materials, the design air
temperature is the average daily mean temperature.
††Obtained from figure 4-1.
†††Obtained from laboratory tests or other sources.
b. Fatigue failure in the bituminous concrete. To
thus a pavement thickness of lo-inches meets both the
check if the lo-inch thick ABC pavement would fail
subgrade criteria and the asphalt fatigue criteria.
by fatigue cracking, the cumulative damage in the bitu-
6-5. Design Details.
minous concrete layer is computed for each month. The
monthly modulus values of the bituminous concrete
Typical details for the design and construction of shoul-
used in computations are from table 6-2. The results
ders, curbs, and gutters of flexible pavements for mili-
of the analysis indicate that the fatigue damage factor,
tary roads and streets are contained in TM 5-822-5/
i.e., ni/Ni, is 0.36 which is considerably less than 1;
AFM 88-7, Chap. 3.
6-4
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