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AASHTO R 46:2022(R2026)

Current

Current

The latest, up-to-date edition.

Standard Practice for Designing Stone Matrix Asphalt (SMA)

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

11-08-2026

This standard practice covers the design of stone matrix asphalt (SMA) using the Superpave Gyratory Compactor™ (SGC). The SMA design is based on the volumetric properties of the SMA in terms of air voids (Va), voids in the mineral aggregate (VMA), and the presence of stone-onstone contact.

DocumentType
Test Method
Pages
13
ProductNote
This record is editorially revised in 2026
PublisherName
American Association of State Highway and Transportation Officials
Status
Current
Supersedes

AASHTO T 312 : 2022 Preparing and Determining the Density of Asphalt Mixture Specimens by Means of the Superpave Gyratory Compactor.
AASHTO T 19M/T 19:2024 Standard Method of Test for Bulk Density ("Unit Weight") and Voids in Aggregate
AASHTO T 166 : 2022 Method of Test for Bulk Specific Gravity (Gmb) of Compacted Hot Mix Asphalt (HMA) Using Saturated Surface-Dry Specimens
AASHTO T 305 : 2022 Standard Method of Test for Determination of Draindown Characteristics in Uncompacted Asphalt Mixtures
AASHTO M 339M/M 339:2026 Standard Specification for Thermometers Used in the Testing of Construction Materials