Effect of fine steel slag powder on the early hydration process of portland cement

Abstract

Hydration heat evolution, non-evaporative water, setting time and SEM tests were performed to investigate the effect of fine steel slag powder on the hydration process of Portland cement and its mechanism. The results show that the effect of fine steel slag powder on the hydration process of Portland cement is closely related to its chemical composition, mineral phases, fineness, etc. Fine steel slag powder retards the hydration of portland cement at early age. The major reason for this phenomenon is the relative high content of MgO, MnO₂, P₂ O₅ in steel slag, and MgO solid solved in C₃ S contained in steel slag.

Keywords

steel slag powder / portland cement / early hydration process

References

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