Valorization of Powder Obtained from Marble Sludge Waste and Its Suitability as a Mineral Filler

Stone industry has generated about 200 million tons of marble waste by processing industries whether in the form sludge or solid blocks. The accumulated wastes contaminate water and air have harmful effects on human health, plants, animals. This study focuses exploring uses powder obtained drying grinding waste, from manufacturing processes, as a mineral filler for other construction materials. First, physical characterization was performed sludge. Second, preparation process presented. Thereafter, set tests carried out to identify chemical, mineralogical, properties powder. By doing so, such chemical analysis, calcium carbonate content, methylene blue test, well mineralogical using X-ray diffraction (XRD), Atterberg limits, particle size densities, Blaine specific surface, hydraulic property, reaction with admixture, cement, activity index were conducted. In last part this work, are compared standards requirements confirm its suitability filler. test results showed that is too rich calcite; it poor any clay minerals fraction; very graded; not reactive; does concrete strength; consequently, can be considered