Flakiness & Elongation of Aggregate

Test aggregates must be sieved using sieves with openings of 63, 50, 37.5, 28, 20, 14, 10, and 6.3mm. These are available as 200mm diameter brass frame sieves with stainless steel cloth as ISO Test Sieves.

• Thickness Gauge (Flakiness Index) is a slotted stainless steel gauge for rapid hand trying of particles from the seven sieve fractions to determine the flakiness index.
• Length Gauge (Elongation Index) has six labeled openings between metal pins for measuring the length of particles from each of the six sieve cuts below 50mm, for elongation index determinations.

For more information on Flakiness & Elongation of Aggregate, here are our related blogs:

• What is Superpave? Understanding Performance-Based Asphalt
• Characteristics of Aggregates: Shape, Size & Specific Gravity