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粉煤灰中总有未烧尽的煤,其含量多少通常是用粉煤灰烧失量来表示。对于双免粉煤灰砖所用的粉煤灰烧失量应控制在12%以下。但是,有的地区的粉煤
There is always unburned coal in the fly ash, and its content is usually represented by the loss on ignition of fly ash. The loss of fly ash used for double-free fly ash bricks should be controlled below 12%. However, some areas of pulverized coal