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This specification covers three sets of physical requirement limits for asphalt cements graded by viscosity at a specified temperature for use in pavement construction. The purchaser shall indicate the applicable table of limits. The cements shall be prepared from crude petroleum by suitable methods, and if needed, volume corrections should be made as well. The properties for which the materials shall be tested on and should conform to are water content, viscosity, penetration, Cleveland open cup flash point, solubility in trichloroethylene, ductility, and behavior during thin-film oven and rolling thin-film oven tests on residue.

Область применения

1.1 This specification covers asphalt cements graded by viscosity at 60°C [140°F] for use in pavement construction. Three sets of limits are offered in this specification. The purchaser shall specify the applicable table of limits. In the event the purchaser does not specify limits, Table 1 shall apply. For asphalt cements graded by penetration at 25°C [77°F]. See Specification D946. If needed, volume corrections for asphalt cements should be made according to Practice D4311.

TABLE 1 Requirements for Asphalt Cement, Viscosity Graded at 60°C [140°F]Note 1—Grading based on original asphalt.

Test

Viscosity Grade

AC-2.5

AC-5

AC-10

AC-20

AC-30

AC-40

Viscosity, 60°C [140°F], Pa·s

25 ± 5

50 ± 10

100 ± 20

200 ± 40

300 ± 60

400 ± 80

Viscosity, 135°C [275°F], min, mm²/s

80

110

150

210

250

300

Penetration, 25°C [77°F], 100 g, 5 s, min

200

120

70

40

30

20

Flash point, Cleveland open cup, min,°C [°F]

165 [325]

175 [350]

220 [425]

230 [450]

230 [450]

230 [450]

Solubility in trichloroethylene, min, %

99.0

99.0

99.0

99.0

99.0

99.0

Tests on residue from thin-film oven test:

 

 

 

 

 

 

 Viscosity, 60°C [140°F], max, Pa·s

125

250

500

1000

1500

2000

 Ductility, 25°C [77°F], 5 cm/min, min, cm

100^A

100

50

20

15

10

^A If ductility is less than 100, material will be accepted if ductility at 15°C [60°F] is 100 minimum at a pull rate of 5 cm/min.

1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.