This specification covers asphalt binders graded by performance. Grading designations are related to the LTPPBind calculated maximum pavement design temperature and the minimum pavement design temperature. This specification contains Table 1 and Table 2. If no table is specified, the default is Table 1.
Table 2 incorporates AASHTO R 49 for determining the critical low cracking temperature using a combination of AASHTO T 313 and T 314 test procedures.
For asphalt cements graded by viscosity at 60°C, see AASHTO M 226.
AASHTO R 29 provides information for determining the performance grade of an asphalt binder.
For specifying performance-graded asphalt binder using Multiple Stress Creep Recovery (MSCR), see AASHTO M 332.
AASHTO M 320-22 History
AASHTO M 320-23
$52.00 $105.00
AASHTO M 320-22
$52.00 $105.00
AASHTO M 320-21
$48.00 $96.00
AASHTO M 320-17
$48.00 $96.00
AASHTO M 320-16
$37.00 $75.00
AASHTO M 320-10 (2015)
$37.00 $75.00
AASHTO M 320-05
$60.00 $120.00
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AASHTO T 324-11
$25.00 $50.00
AASHTO M 170-12
$34.00 $69.00
AASHTO T 300-11 (2020)
$33.00 $66.00
AASHTO T 196M/T 196-11 (2019)
$30.00 $61.00