The Influences of Iron Ore Tailings as Fine Aggregate on the Strength of Ultra-High Performance Concrete

Table 1

Chemical component (%).

Name	SiO2	Al2O3	CaO	MgO	SO3	Fe2O3	Na2O	K2O	Loss
Cement	20.71	4.97	59.88	2.33	3.72	3.26	/	/	3.62
IOT	68.44	8.27	4.46	3.04	0.35	7.46	2.29	1.90	2.73
Fly ash	55.77	31.77	2.59	0.61	0.60	3.88	/	/	1.03
Slag powder	32.69	15.50	38.14	9.14	1.73	1.70	0.10	0.43	2.3
Silica fume	94.32	0.14	0.06	0.05	0.43	1.29	/	/	3.40