Utilization of Construction Waste Composite Powder Materials as Cementitious Materials in Small-Scale Prefabricated Concrete

Table 2

Chemical compositions of mineral powder and fly ash.

Components	SiO2	CaO	Al2O3	Na2O	SO3	MgO	Fe2O3	MnO	K2O
Mineral powder (wt%)	40.20	40.20	10.5	0.23	5.13	4.36	—	0.14	—
Fly ash (wt%)	51.54	4.48	32.08	0.76	0.65	1.035	6.84	—	1.61