R 92-2018 PDF

Standard No.: R 92-2018
Release Date: 2018
Published By: AASHTO - American Association of State Highway and Transportation Officials
Latest: R 92-2018

Scope: 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 T 240 (Rolling Thin- Film Oven Test (RTFOT))@ but may also be run on residue from 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 M 320 or M 332. The values stated in SI units are to be regarded as the standard. This standard does not purport to address all of the safety concerns@ if any@ associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

R 92-2018 history

2018 R 92-2018 Standard Practice for Evaluating the Elastic Behavior of Asphalt Binders Using the Multiple Stress Creep Recovery (MSCR) Test