This research consists of incorporating the crushed sand (CS) in the composition of a concrete and studies the effect of its\ngradual replacement by the sand dune (SD) on sustainability of high performance concrete (HPC) in aggressive environments.\nThe experimental study shows that the parameters of workability of HPC are improved when the CS is partially replaced by the\nSD (<2/3). However, a high content of SD (>1/3) additional quantities of water is needed to meet the workability properties.\nThe mechanical strengths decrease by adding the SD to CS, but they reach acceptable values with CS in moderate dosages. The\nHPC performances are significantly better than the control concrete made up with the same aggregates. The specification tests of\ndurability show that the water absorbing coefficients by capillarity increase after adding SD to the CS.
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