Specifications include, but are not limited to:The Flakiness Index of an aggregate is the mass of particles in that aggregate which will pass the appropriate slot or slots for the individual size fraction expressed as a percentage of the total mass of that aggregate. The width of the slots is determined by multiplying the mean of upper and lower sieve size for the slot by nominal 0.6. Equipment: Gauge: metal 1/16” thick, with slots that comply with the tolerances given in columns 3 and 4 of Table 1, labeled to indicate individual size fraction appropriate to that slot, scale or balance of sufficient capacity and accurate to 0.1 percent of sample mass, or 0.1 gram conforming to the requirements of AASHTO M 231 Sieves conforming to the requirements of AASHTO M 92 Other apparatus as required by AASHTO T 27/T 11. Procedure: Preparation of test sample: Sample Size conforming to AASHTO T 27 Sieve Analysis of Fine and Coarse Aggregate. Perform AASHTO T 11, Materials Finer than #200 Sieve in Mineral Aggregate by Washing in conjunction with AASHTO T 27. Separate aggregates into specified individual size fractions, Table 1. Material coarser than the ½” sieve and finer than the #4 sieve is discarded
