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AbstractIn this study, we sought to use the crystallized sand slag of blast furnace in the production of ordinary concrete. The natural sand is substitute totally or partially by the crystallized sand slag in the composition of concrete. The characterization of these concretes was made based on their mechanical properties: compressive strength, tensile strength as well as durability: capillary, absorption of water and shrinkage. The experimental results of concrete that is the natural sand is replaced partially or completely by crystallized sand slag were compared with experimental results of ordinary concrete. Results show that the percentages of crystallized sand slag on the composition of concrete have an important effect on the mechanical proprieties of concrete. The comparison of different characteristics of the study in this work shows the benefits of use of crystallized sand slag in the composition of concrete compared with ordinary concrete, which confirms the possibility to use the crystallized sand slag in the manufacturing of concrete

Substitution of the natural sand by crystallized slag of blast furnace in the composition of concrete