Advances in Materials Science and Engineering / 2020 / Article / Tab 2

Research Article

Effect of Desliming of Tailings on the Fresh and Hardened Properties of Paste Backfill Made from Alkali-Activated Slag

Table 2

Chemical, physical, and mineralogical properties of binders.

Chemical compositionOPC (wt.%)Slag (wt.%)Physical propertiesOPCSlag

SiO221.8839.75Specific gravity3.072.89
Al2O34.7410.91Specific surface area (cm2/g)41204600
Fe2O32.900.80Retained on 45 μm sieve (%)2.174.15
CaO65.038.02Retained on 32 μm sieve (%)7.489.60
MgO1.405.92Mineralogical composition (%)
TiO20.190.51C3S50.42
Cr2O30.010.01C2S27.76
Na2O0.390.32C3A7.66
K2O0.751.19C4AF8.83
MnO0.121.54Basicity index
P2O50.06<0.011.03
Free lime1.04
Loss on ignition2.50.20
SO32.671.62
Reactive SiO239.10

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