A. Meet the requirements for the type and grade specified in the contract documents and comply with the Combined States Binder Group.
B. Determine performance grade according to AASHTO R 29.
C. Polyphosphoric Acid may be used as a co-modifier up to 0.5% by weight of binder. The Engineer may verify with laboratory testing.
D. Except for Standard Traffic grades, meet CSBG requirements for Minimum Percent Recovery when tested per AASHTO T 350 at the high temperature identified by the PG grade.
E. Waive stress sensitivity limits (Jnr Diff) for AASHTO M 332 when Jnr at 3.2 kPa is below 0.5 kPa-1.
F. When PG 58-34E+ is specified, the binder shall comply with requirements of PG 58-34E except that a minimum percent recovery of 90% when tested at 58°C per AASHTO T 350 at 3.2 kPa is required.
G. When PG 64-34E+ is specified, the binder shall comply with requirements of PG 64-34E except that a minimum percent recovery of 90% when tested at 64°C per AASHTO T 350 at 3.2 kPa is required.