AASHTO M 332:2018 Standard Specification for Performance-Graded Asphalt Binder Using Multiple Stress Creep Recovery (MSCR) Test

AASHTO M 332:2018 Standard Specification for Performance-Graded Asphalt Binder Using Multiple Stress Creep Recovery (MSCR) Test.
3. TERMINOLOGY
3.1. Definitions:
3.1.1. Definitions for many terms common to asphalt binder are found in ASTM D8.
3.1.2. asphalt binder—an asphalt-based cement that is produced from petroleum residue either with or without the addition of nonparticulate organic modifiers.
4. ORDERING INFORMATION
4.1. When ordering under this specification, include in the purchase order the performance grade (PG) of asphalt binder required including the designation for traffic loading (e.g., M 332, PG 64V-22).
4.1.1. If required to comply with the elastic response requirements in R 92, include reference to R 92 in the purchase order (e.g., M 332, PG 64V-22. R 92, Percent Recovery of X).
4.2. The required environmental asphalt binder grades may be selected by following the procedures described in M 323 and R 35, except do not use the “grade bumping” procedure in M 323. Select
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the environmentally appropriate high- and low-temperature grades and the appropriate S. H, or “Ii” grade for the expected traffic level and traffic load rate.
4.2.1. Standard Designation “S” in most typical situations will be for traffic levels fewer than 10 million Equivalent Single Axle Loads (ESALs) and more than the standard traffic speed (>70 km/h).
4.2.2. High Designation “H” in most situations will be for traffic levels of 10 to 30 million ESALs or slow-moving traffic (20 to 70 km/h).
4.2.3. Very High Designation “V” in most situations will be for traffic levels of greater than 30 million ESALs or standing traffic (<20 km/h). 4.2.4. Extremely High Designation “E” in most situations will be for traffic levels of greater than 30 million ESALs and standing traffic (<20 km/h) such as toll plazas or port facilities. Note 3—”Grade bumping” is accomplished by using “H,”“V,” or “E” designations and not by increasing the PG high-temperature grade as recommended in M 323. 5. MATERIALS AND MANUFACTURE 5.1. Asphalt binder shall be prepared by the refining of crude petroleum by suitable methods, with or without the addition of modifiers. 5.2. Modifiers may be any organic material of suitable manufacture that is used in virgin or recycled condition and that is dissolved, dispersed, or reacted in asphalt binder to enhance its performance.AASHTO M 332 pdf download.