... material. It is based on cement, lime, slag, fly ash, and sand and made of materials such as gas as ... Games GuangzhouEXPO 2010 ShanghaiInfrastructure of AmericaFly Ash Aerated ConcreteConventional fly ash aerated concrete production, uses original fly ash, lime, gypsum and other raw ... above 75%. Digestion can be a large number of fly ash, coal gangue, phosphorus gypsum, calcium carbide sludge and ...