Influence of Fineness on Activity Index of Blast Furnace Slag with Different SiO2/Al2O3

Su Ping Cui; Ling Ling Liu; Ya Li Wang; Hui Wang; Shi Jie Dong

doi:10.4028/www.scientific.net/MSF.814.579

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HomeMaterials Science ForumMaterials Science Forum Vol. 814Influence of Fineness on Activity Index of Blast...

Influence of Fineness on Activity Index of Blast Furnace Slag with Different SiO₂/Al₂O₃

Abstract:

Granulated blast furnace slag (GBFS) is a by-product of ironmaking and widely used in the cement and concrete. GBFS samples with different ratio of SiO₂/Al₂O₃ were prepared under the laboratory conditions and ground by the agate ball mill at different times. Then they were characterized by laser particle size analysis (LPSA), scanning electron microscopy (SEM), Bertrand surface method and mechanical testing. It was found that the activity index of GBFS clearly increased with the decrease of the GBFS particle size. In the case of the average particle size about 32μm, the activity indices were irregular with the increase of SiO₂/Al₂O₃ ratio, whereas for the average particle size about 11μm, the activity indices decreased with the increase of SiO₂/Al₂O₃ ratio.

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Periodical:

Materials Science Forum (Volume 814)

Pages:

579-582

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.814.579

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Online since:

March 2015

Authors:

Su Ping Cui*, Ling Ling Liu, Ya Li Wang, Hui Wang, Shi Jie Dong

Keywords:

Activity Index, Fineness, Granulated Blast Furnace Slag

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