Abstract
This study investigates the feasibility of producing environmentally friendly cement exclusively from industry wastes: ladle slag fines and fly ash. A low temperature clinkering process was implemented to produce a cement material capable of gaining early strength by carbonation and late strength by hydration. The optimum uses of fly ash and clinkering temperature were determined by undergoing meticulous parametric studies. The results of this investigation demonstrate that the higher the clinkering temperatures used, the higher the carbonation and hydration reactivity of the cement. The optimal fly ash ratio and temperature for synthesizing cement was found as 30% and 1250 °C, respectively. The composite action generated by calcium carbonates and calcium silicate hydrates eventually plays an important role in gaining the strength. Production of cement with ladle slag and fly ash at low temperature can reduce the energy consumption, the natural resources consumption, landfills disposal cost, and the total CO2 emission.
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