ETL 1110-l-139
22
90
Table 5
Minimum PVN Selection Criteria for Asphalt Cements in Cold Region
Roads and
Other Pavements
by Design Index
Cold
Airfields
64
Moderate cold
3,000 degree-days*)
(DFI
-0.5
-0.5
-0.5
Severe cold
(DFI
3,000 degree-days*)
-0.2
-0.5
-0.2
* Degree-Fahrenheit-days (1,667 degree-Celsius-days).
1
5000
3000
2000
1000
500
200
100
50
10
10
20
50
100
200
500
1000
2000
10,000
PENETRATION AT
F
Figure 1.
PVN chart for cold region asphalt selection
1972)
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