Abstract
This article reports the study of the impact of the addition of 0/80 mm limestone fillers on the workability and strength of ordinary concretes. Its aim is to develop sands containing a high rate of fillers available in large quantities in Algeria and to identify the possible proportions that can be introduced without compromising the quality of the concrete. The study consists of gradually inserting a rate of fillers of 0, 6, 12, 18 and 24% in the cement mixes. The variation was studied by maintaining a constant maneuverability. Physical and mechanical, microstructural properties of durability were studied. The results obtained showed that the concretes are very influenced by the addition of fillers and highlight the existence of an optimum rate of performance. The addition of a high percentage of fines (up to 18%) does not seem to affect the mechanical and hydraulic characteristics of the concretes.
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