ASTM D4791

Full Name

ASTM D4791 – Standard Test Method for Flat Particles, Elongated Particles, or Flat and Elongated Particles in Coarse Aggregate


This test method covers the determination of the percentages of flat particles, elongated particles, or flat and elongated particles in coarse aggregates.

Two procedures, Method A and Method B, are presented in this standard:

  1. Method A is a reflection of the original procedure as developed prior to Superpave and is intended for all non-Superpave applications.
  2. Method B is a comparison of the maximum particle dimension to the minimum particle dimension and is intended for use with Superpave specifications.


aggregates; coarse aggregates; particle shape

ASTM D4791 Accredited Laboratory

Applied Testing & Geosciences, LLC is accredited for performing tests using the ASTM D4791 standard.

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