AASHTO T 350-19 PDF Download

AASHTO T 350-19 is a standard method of testing asphalt binders to determine their percent recovery and nonrecoverable creep compliance using the Multiple Stress Creep Recovery (MSCR) test. This test is conducted using a Dynamic Shear Rheometer (DSR) at a specified temperature. The MSCR test is particularly designed for use with residue from the Rolling Thin-Film Oven Test (RTFOT) as described in AASHTO T 240.

The main purpose of the MSCR test is to evaluate the elastic response and stress dependence of asphalt binders, especially for polymer-modified and unmodified binders. The percent recovery value obtained from this test can provide valuable information about the performance characteristics of the binders under different stresses. This standard provides the guidelines and procedures for conducting the MSCR test and interpreting the results accurately.