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Table 1 Physical and chemical specifications of the cement and silica fume

From: Eco-friendly High-Strength Refractory Concrete Containing Calcium Alumina Cement by Reusing Granite Waste as Aggregate

Component Cement Silica fume (SF)
CaO 40–36 1.5
SiO2 8–3 90–95
C 0.8–3
Al2O3 42–36 1
Fe2O3 2–3.5 2
MgO 1 2
K2O 0.2–0.5
SO3
H2O   0.01–0.4
TiO2  < 0.5  
Total alkali
Specific surface area (m2/kg) 15,000–30,000
Unit volume weight (kg/m2) - 310–350