Physico-Mechanical Characterizations of Sand Concrete: Prestressed Beams and Hollow Bricks
- 1 Laboratory for Water and Environmental Sciences and Technilogy, Polytechnic School of Thies, Thies, Senegal
- 2 Laboratory for Water and Environmental Sciences and Technilogy, Polytechnic School of Thies, Thies, Senegal
- 3 Laboratory of Engineering Sciences for Environment, La Rochelle University, La Rochelle, France
- 4 Laboratory for Water and Environmental Sciences and Technilogy, Polytechnic School of Thies, Thies, Senegal
- 5 Laboratory of Engineering Sciences for Environment, La Rochelle University, La Rochelle, France
Abstract
The use of the sand concrete makes it possible to carry out a concrete having physico-mechanical properties answering the structural exigences and having economic and environmental advantages compared to the classical concrete. The present study aims to connecting the parameters of a formulation based on an empirical formula of Caquot in order to optimize, on the one hand the couple compressive strength/absorption of water under various degrees of hygrometry, and on the other hand more precisely to use the concrete sand in the public works sector in the prefabrication of prestressed beams and hollow bricks. The results show the importance of the type of formulation used because it takes into account the percentages of fillers of sand which is a co-product (waste) of massive rock crushing. In addition, the use of fillerized sands, which are wastes of crushing basaltic rocks and containing a small percentage of fillers, is efficient in the manufacture of prestressed beams. As for the hollow bricks, a fillerized basalt sand, containing a high percentage of filler, as well as a sand dune, gives satisfactory results.
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