AASHTO T 330:2022(R2026)
Current
Current
The latest, up-to-date edition.
Standard Method of Test for The Qualitative Detection of Harmful Clays of the Smectite Group in Aggregates Using Methylene Blue
Available format(s)
Hardcopy , PDF
Language(s)
English
Published date
11-08-2026
Including GST where applicable
Methylene Blue solution is titrated in increments into distilled water containing sample material passing the 75-µm (No. 200) sieve in increments.
| DocumentType |
Test Method
|
| Pages |
6
|
| ProductNote |
This record is editorially revised in 2026
|
| PublisherName |
American Association of State Highway and Transportation Officials
|
| Status |
Current
|
| Supersedes |
The purpose of this standard is to identify the presence of harmful clays of the smectite group (poor minus 75-µm material) and to provide an indication of the surface activity of the aggregate.
Summarise