AASHTO R 92-18 (2022)

This practice provides a means of evaluating the elastic behavior of an asphalt binder by using the results (percent recovery and non-recoverable creep compliance) from the Multiple Stress Creep Recovery (MSCR) test. The MSCR test is conducted using the Dynamic Shear Rheometer (DSR) at a specified temperature. It is primarily intended for use with residue from AASHTO T 240 [Rolling Thin-Film Oven Test (RTFOT)], but may also be run on residue from AASHTO R 28 [Pressurized Aging Vessel (PAV)].

The elastic behavior of an asphalt binder can provide insight to the technologist indicating to what extent, if any, the binder could be modified with an elastomeric polymer.

This practice may be used in conjunction with AASHTO M 320 or M 332.