scope:

This specification covers asphalt binders graded by performance. Grading designations are related to the average seven-day maximum pavement design and minimum pavement design temperatures.

Table 2 incorporates R 49 for determining the critical low cracking temperature using a combination of T 313 and T 314 test procedures.

Note 1-For asphalt cements graded by viscosity at 60°C, see M 226.

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

Note 3-For specifying performance-graded asphalt binder using Multiple Stress Creep Recovery (MSCR), see MP 19.