Effect of Agricultural Crop Wastes as Partial Replacement of Cement in Concrete Production

Table 7

Chemical compositions of SCBA.

Chemical oxides (%)	Authors
	Quedou et al. [66]	Ganesan et al. [78]	Abd Elhameed Hussein et al. [79]	Mangi et al. [80]
SiO2	30.27	64.15	77.25	65.00
Al2O3	23.80	9.05	6.37	3.95
Fe2O3	4.87	5.52	4.21	9.17
CaO	1.69	8.14	4.05	12.60
MgO	1.37	2.85	2.61	0.60
SO3	—	—	0.11	0.10
K2O	—	1.35	2.34	—
Na2O	—	0.92	1.38	—
LOI	5.43	4.90	1.4	9.02
SiO2 + Al2O3 + Fe2O3	58.94	78.72	87.83	78.12
ASTM class	Class C	Class F	Class F	Class N