Étude De Propagation Des Fissures Dans Un Mortier À Base Des Différents Sables Soumis À Des Sollicitations Simples
Résumé: The aims of this study is understanding the phenomenon of the appearance and the propagation of the cracks in a mortar based on different sand subjected to simple solicitations and its effects on its bearing capacity, its servicability and its durability. The study is focused on three mortars made from three sands (dune, alluvial and limestone). After characterization of the basic materials and formulation of the three mortars. An experimental program involves the study of the evolution of the mechanical resistance to compression and bending of our mortars as a function of time. Tests for measuring the speed of dynamic auscultation, for each conservation time, before flexural tests and during the test, are carried out whose objective is to study the effect of the appearance and propagation of cracks. Finally, the calcareous nature of the angular shape of the grains, the high maximum diameter, and the good granular distribution gave relatively great effect on the mechanical behavior and resistance to the appearance and propagation of cracks
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