Example 1
Recycled glass cullet is cleaned, ground to less than 150 micrometers (US Standard sieve size No. 100), mixed with a foaming agent (e.g., a carbonate foaming agent) in a pug mill, heated, and allowed to fragment from temperature shock. The resulting lightweight-foamed glass aggregates are cellular. After sample preparation, the initial moisture content is measured following ASTM D2216 (2010), grain size distributions are determined following ASTM C136/136M (2006) and the initial bulk density is measured following ASTM C127 (2012a) on the lightweight-foamed glass aggregates. The average moisture content is determined to be 1.06% and the average bulk density is determined to be 227.2 kg/m3 (14.2 pcf). Sieve analyses are performed following the dry sieving method on the lightweight-foamed glass aggregates. Particle size ranges from 10 to 30 mm (0.39 to 1.18 in) but is a very uniformly graded material.
