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《Fly Ash Comprehensive Utilization》 2010-05
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Comparison of Properties between BAO-steel Corex Slag and Blast Furnace Granulated Slag

WANG Zhen-xing~1,ZHANG Shu-qing~1,WU Min~2,ZHAI Wei~2(1.School of Material Science & Engineering,Tongji University,Shanghai,200092;2.Shanghai Baotian Co.Ltd.of Building Materials,Shanghai,200942)  
The physical properties,grindability,activity and self-hydration activity of the blast furnace granulated slag and Corex slag in Bao-steel were studied in the paper.The result shows that,the chemical composition of Corex slag and blast furnace granulated slag is closer.The alkalinity of both of the slag is greater than 1,so they have the potential hydration activity.Comparing with the blast furnace granulated slag,Corex slag has higher compactness,iron content and bulk density,so the grindability of Corex slag is lower than the former.In addition,in the same fineness,the self-hydration activity of Corex slag is a little higher than blast furnace granulated slag,and the early activity index(3d,7d) of Corex is much higher than blast furnace granulated slag,,when the specific surface area is 400~450m2/kg,the early activity index of Corex slag is respectively 15% and 20% higher than the blast furnace granulated slag,but the late activity shows little difference.
【CateGory Index】: TF557
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