Applications of Steel Slag Powder and Steel Slag Aggregate in Ultra-High Performance Concrete

Table 1

Chemical compositions of the cement and steel slag (%).

Sample	SiO2	Al2O3	Fe2O3	CaO	MgO	MnO	P2O5	SO3	Na2Oeq	Loss
Cement	22.36	7.73	3.66	57.21	3.10	—	—	3.54	0.73	2.31
Steel slag	19.11	7.46	18.01	43.37	5.17	2.66	1.76	—	0.41	1.36

Na₂O_eq = Na₂O + 0.685K₂O.