Precision Statements for AASHTO Standard Methods of Test
AASHTO Material Reference Laboratory
The objective of this research was to develop or update precision and bias statements for AASHTO standard test methods.
Task Order #1 investigated specific sources of variability in AASHTO T 209, Theoretical Maximum Specific Gravity and Density of Hot Mix Asphalt (HMA), and quantified their effects on the precision of the method.
In Task Order #2, precision statements for six AASHTO test methods were updated through AMRL data mining and an interlaboratory study..