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. 2020 Dec 7;13(23):5575. doi: 10.3390/ma13235575

Table 2.

The chemical composition of Portland cement and coarse aggregates used.

Chemical Composition CaO SiO2 Al2O3 Fe2O3 MgO Alkalis
Cement, % 65.53 21.77 4.88 4.02 1.22 0.64
Quartz sandstone, % 0.56 94.32 2.63 0.42 0.68 0.97
Granite, % 2.52 74.32 14.52 2.41 0.73 6.25
Gabbro diabase, % 10.28 47.93 16.23 13.04 5.32 3.85