In Algeria, more than thousand of aggregate crushing station produces annually about 68 million tons ofaggregates, essentially of calcareous nature. Unfortunately, more than 20% of manufactured sands areunsuitable to be used as construction sands because of their high fines content that largely exceed thecurrent standard that limit the maximum value to 12%. Similarly, the limestone fillers, which also resultfrom the limestone rocks crushing process, are regarded as inadequate residues and in consequenceunexploited. To improve the situation, it is important to improve all the aggregates and sands with a highfiller content and more particularly sands and the limestone fillers itself. This has a favourable effect notonly on the economy of the country but also the environment.This paper shows the influence of the characteristics of Algerian limestone fine (proportioning, fineness)on the physical properties, the mechanical performance and durability of cements pastes made withvarious water to binder ratios. Obtained results show that the replacement of part of cement by theselimestone fillers can improve significantly the mechanical resistance, the workability, as well as thedurability. This study also shows that the limestone fillers not only have a physical effect but also animproved chemical activity by producing new hydrated compounds such as the carboaluminates.
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