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. 2020 Dec 7;13(23):5576. doi: 10.3390/ma13235576

Table 1.

Chemical composition of coal gangue and slag (wt %).

Precursor Al2O3 SiO2 CaO Fe2O3 Na2O MgO TiO2 LOI
OPC 4.65 21.18 63.25 3.78 0.18 3.26 1.55 2.15
Slag 14.04 30.58 38.43 0.35 0.57 10.57 1.93 1.17
Coal Gangue 36.78 56.56 0.62 1.95 0.42 0.22 2.10 1.32