Szukana fraza: [Abstract = "This study therefore consists in recovering this type of waste \(discarded powder subject to weather changes\) as sand in partial replacement of dune sand in the formulation of sand concrete with percentages of 5, 10, 15 and 20%, by studying the behavior of these concretes in the fresh state \(workability, density and occluded air\) and the properties in the hardened state \(compressive and tensile strength by bending, absorption by immersion, shrinkage and weight loss, chemical effect of HCl and H2SO4 solutions\), and subsequently comparing the results obtained with reference samples \(0%\) based on ordinary sand."]

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