The Role of Iron Tailing Powder in Ultra-High-Strength Concrete Subjected to Elevated Temperatures

Table 2

Composition analysis of raw materials (%).

Specimens	CaO	SiO2	Al2O3	Fe2O3	SO3	MgO	Loss on ignition
Cement	57.58	20.35	6.12	4.23	2.19	2.59	2.59
Silica fume	0.41	94.02	0.27	0.11	0.11	0.34	2.86
Iron tailing powder	12.12	51.85	11.24	9.34	0.41	4.86	2.41