The Incorporation of Steel Slag into Belite-Sulfoaluminate Cement Clinkers

The potential use of steel slag from treated in belite-sulfoaluminate cements was investigated this study. Cement clinkers with two phase compositions were synthesized, allowing the incorporation different amounts slag. composition and microstructure cement at three sintering temperatures studied by X-ray powder diffraction Rietveld method, as well scanning electron microscopy energy dispersive spectrometry. results showed that targeted achieved a temperature 1250 °C. However, higher amount perovskite instead ferrite detected clinker content Ti-bearing bauxite. Apart main phases, such belite, calcium sulfoaluminate, ferrite, several minor phases identified, including mayenite, perovskite, periclase, alkali sulfates. In both mixtures, MgO slags resulted formation periclase. Furthermore, hydration kinetics compressive strength 7 28 days prepared sintered As evidenced isothermal calorimetry, also influenced phases. sulfoaluminate developed strength.