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. 2018 Aug 1;18(8):2489. doi: 10.3390/s18082489

Table 1.

Chemical Composition of Fly ash and Cement.

Compound SiO2 (%) Fe2O3 (%) CaO (%) K2O (%) SO3 (%) TiO2 (%) MnO2 (%) SrO (%)
Fly ash 60.7 18.7 10.2 4.3 - 4.1 0.4 0.7
Cement 13.8 6.0 75.7 - 3.7 0.4 0.2 -