Asphalt Rubber Technology Information Center
Review of Fine Aggregate Angularity Requirements in Superpave
Author(s):
Jen Lee, Chih; Pan, Changlin and White, Thomas, Purdue University  
Origin:
Indiana
Date:
March, 1999  
Categories:
Performance  
Key Words:
Asphalt mixtures, performance, Superpave, laboratory wheel tests, PURWheel, aggregates, fine aggregate angulatory
Summary:
Superpave aggregate qualification includes the fine aggregate angularity (FAA).  The numerical value of the FAA is the
mineral aggregate of the loosely packed fine aggregate.  Use of FAA has been predicated on the philosophy that higher
and lower values of FAA represent fine aggregate that will exhibit high and low internal friction, respectively.  The
amount of friction depends on the aggregate particle shape and texture.  Higher internal friction is associated with
increased rutting resistance.
© 2015 - Rubber Pavements Association (RPA). All rights reserved.