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Gilson Flakiness Gauges characterize he particle shape of aggregates used in asphalt and concrete paving mixes or pavement base course applications. It can also determine application rates of aggregate and asphalt material for pavement seal coats.
Aggregate particles are manually tried against slots. Aggregates not passing are identified as flaky and their percent of the total sample by weight is the flakiness index. The presence of flaky particles is undesirable and increases the possibility of pavement breakdown under heavy loads.
Gilson offers two thickness gauges for aggregate. Both are heavy-gauge stainless steel with precision laser-cut openings and etched size markings for each slot.
HM-925 meets BS 812-105 specifications and features seven slots for rapid hand-trying of particles from each of the seven sieve fractions from 2.5 to 0.25in (63 to 6.35mm).
HM-924 meets Indiana Department of Transportation standard ITM-224-18 and several other state agencies for flakiness index testing. This thickness gauge has five slots with openings ranging from 1 to 0.25in (25.4 to 6.35mm).
HM-925: 2.5 to 0.25in (64 to 6.35mm)
HM-924: 1 to 0.25in (25.4 to 6.35mm)
HM-925: 15 x 5.9 x 0.5in (381 x 149.9 x 12.7mm), WxDxH
HM-924: 15 x 6 x 0.5in (381 x 152 x 12.7mm), WxDxH
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