Ggbfs is obtained by quenching molten iron blast furnace slag (a by-product of iron and steel making) in water or stream, to produce a glassy granular product that is then dried and ground into a fine powder. Blast furnace slag powder is widely used in cement and concrete; it can reduce the hydration heat of concrete, increase the later strength, and improve the microstructure of concrete, reinforcement aggregate rate of the bonding interface. It can replace part of the cement in concrete. Test item gbt8046 standard ex-plant test result physical properties soundness, boiled expansion (mm) density, gcm3 2.8 2.92 fineness, blaine test, m2kg 400 414 activity index, % 7 days 75 79 28 days 95 110 ratio of fluidity, % 95 103 chemical analysis sulphate(so3), % 4.0 0.13 loss on ignition(loi), % 3.0 0.2 sum(cao+sio2 ), % 70.41% aluminum oxide (al2o3) % 14.92%
Upington, South Africa
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Jaquan Schmidt (prowess international commerce group)
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