Przemysl Chemiczny, Vol.84, No.2, 110-113, 2005
Production of fine building aggregates from coal combustion fly-ash -ecological utilization of waste materials - Part I. Production hydrothermally hardened aggregates
A review covering production methods of hydrothermally hardened aggregates including Dutch-made Aardelite, Polish-made Cegran (pilot plant 55-60 ktons/year), Megran and Pregran, used as lightweight concrete constituents and mine backfilling materials.