Comparative Analysis of Selected Concrete Mix Design Methods Based on Cost-Effectiveness

Table 1

The chemical makeup of Dangote grade 42.5 R OPC cement.

No.	Chemical compositions	Amount within Dangote grade 42.5 R OPC (%)
1	Calcium oxide (CaO)	66.32
2	Silicon dioxide (SiO2)	22.82
3	Aluminum oxide (Al2O3)	5.41
4	Ferric oxide (Fe2O3)	3.37
5	Magnesium oxide (MgO)	1.46
6	Alkalis	-