Flakiness Index is the percentage by weight of particles in it, whose least
dimension (i.e. thickness) is less than three-fifths of its mean dimension.
Elongation Index is the percentage by weight of particles in it, whose
largest dimension (i.e. length) is greater than one and four-fifths times its
mean dimension.
Flaky and elongated particles may have adverse effects on concrete and
bituminous mix. For instance, flaky and elongated particles tend to lower
the workability of concrete mix which may impair the long-term durability.
For bituminous mix, flaky particles are liable to break up and disintegrate
during the pavement rolling process.
Answered by
Vincent T. H...
at
Oct 7, 2010 05:06 AM
