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Concrete and its ingredients. Concrete is a mixture of cement, water, and aggregate material. Portland cement is made by heating a mixture of limestone and . clay containing oxides of calcium, aluminum, silicon and other metals in a kiln and then pulverizing the resulting clinker. The fine aggregate particles are usually sand. Coarse aggregate.Silica sand making machine vsi crusher equipment, silica sand washing machine for sale china silica sand washing machine for sale, our pany is a professional manufacturer of jaw crusher, vsi crusher, vibrating screen etc a manufacturer high capacity aggregate a mutural gain machinery co, factory wholesale stone crusher, hot sale.