AASHTO T 330:2007 (R2011)
AASHTO T 330:2007 (R2011) Method Of Test For The Qualitative Detection Of Harmful Clays Of The Smectite Group In Aggregates Using Methylene Blue Describes the presence of harmful clays of the smectite Group (poor minus 75-[mu]m material) and to provide an indication of the surface activity of the aggregate.