Abstract
Aggregates, produced by quarrying, are used in the construction industry and are considered vital for the development of the construction sector. In limestone quarries, considerable amounts of limestone quarry dust (LQD) are produced as a by-product of stone crushers. These quantities of powders are intended for use as an addition to building materials. Electric arc furnace slag (EAFS) consist of metal oxides trapped in fluxes such as lime and dolomite, this industrial by-product comes from the Moroccan steelworks SONASID-Jorf, and is used in this study. The main concern is to find a cement/sand substitute by replacing normal cement/sand by LQD/ESAFS that will reduce the amounts of cement/sand used in mortars and concretes and at the same time reduce the produced amounts of these industrial solid wastes. This article reports a preliminary study of the early age mineralogy of a mortar based on the partial replacement of cement/sand by LQD/ESAFS and co-grinding mixtures, the proportions used in the mortar mixtures are 20%, 25%, 30% LQD and 15% EAFS.
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