1.1This specification² covers asphalt binders graded by performance. Grading designations are related to the average seven-day maximum pavement design temperature, and minimum pavement design temperature. This specification contains Table 1 and Table 2. Table 2 incorporates Practice D6816 for determining the critical low cracking temperature using a combination of Test Method D6648 and Test Method D6723 test procedures. If no table is specified, the default is Table 1.

Note 1-For asphalt cements graded by penetration at 25°C, see Specification D946. For asphalt cements graded by viscosity at 60°C see Specification D3381.

Note 2-AASHTO R 29 provides non-mandatory information for determining the performance grade of an asphalt binder.

1.2The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.