Ground Granulated Blast furnace Slag(GGBS)

GRANULATED BLAST FURNACE SLAGSPECIFICATIONAccepted ValuesTested ValuesSiO2 = 30-44%(33.27 %)CaO = 33-39%(38.88 %)MgO =Max 12% (9.23%)Al2O3 = Max 18%(15.8%)Moisture Content= Max 5%(0.1%)General Basicity = Max5% (1.99%)Granulometry = <2mm = 98%Activity index within 7 days95% within 28 days 116%Product Description: This product respectively uses 30 70% and 20 40% as a substitute in the Portland cement and Portland Ordinary Cement and can dispose the high performance concrete C30 C80.Product Features : GGBS is one kind of powdery product of superfine milling to water-quenched slag from blast furnace. Its main chemical composition is super activated SiO2AI2O3CaOMgOMnOFe2O3. After it is mixed into the cement concrete as a mixed material, these activated SiO2AI2O3 then can respond to Ca(OH)2 as a result of C3S and C2S hydrate in the cement, further form the hydrated calcium silicate products in order to fill into the cement concrete hole and enhance the cement concrete durability on a large scale, simultaneously transform lower Ca(OH)2 crystals into higher hydrated calcium silicate gelatin, enabling a series of performance on the cement concrete to be remarkably improved. Application GGBS as combination project aggregates is widely applies to the road building, the airport construction, the port and harbor construction, the concrete project and so on. Presently overseas GGBS has been mainly utilized to produce higher economic value field, such as the cement, asbestos, aggregate, brick, cast basalt and crystallite glass.