Reuse of Local Sand: Effect of Limestone Filler Proportion On The Rheological and Mechanical Properties of Different Sand Concretes

In Algeria, the housing shortage, coupled with the lack of coarse aggregates in certain regions, has made it mandatory to reuse local materials. Local sands, which are presently only slightly or not at all used, constitute sizable deposits and their application as construction materials would respond to the ecological and economic considerations raised by current trends. This article reports on a study undertaken to consider the possibility of exploiting local sand available in large quantities to produce a sand concrete and to partially find a substitute for scarce coarse aggregate in concrete. Fillers, which derive from calcareous wastes, are utilized to correct the particle size distribution of sands. The study used three distinct sands: a dune sand (DS), a river sand (RS), and a mixture of dune and river sand in predetermined proportions. This results show the importance of both filler concentration and sand particle size distribution. Correction of the granular distribution by means of mixing two local sands (river and dune) has allowed the optimization of compactness and workability, while at the same time achieving a good level of mechanical strength with reasonable quantities of cement. Microstructural investigation reveals a compact and homogeneous cement paste, without major cracks and with a perfected paste-aggregate connection.

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  • Authors:
    • Bédérina, M
    • Khenfer, M M
    • Dheilly, R M
    • Quéneudec, M
  • Publication Date: 2005-6

Language

  • English

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Filing Info

  • Accession Number: 01003085
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 4 2005 10:08AM