Requirement before 20 days Volume: 15, 000- 20, 000 mt (in jumbo) FOB hai phong port Specifications of fly ash ( astm ( C 618) Moisture: ...................0.1- 0.9% Sio2...........................50- 56 Al2o3.........................25- 30% Fe2o3.........................5-9% So3.............................0.5- 0.8% Loi (loss of ignition): .4.0- 5.5%