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M00001229
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AASHTO T 330-22 Standard Method of Test for The Qualitative Detection of Harmful Clays of the Smectite Group in Aggregates Using Methylene Blue
standard by American Association of State and Highway Transportation Officials, 2022
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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.
This standard was formerly designated as provisional standard TP 57.