Reco Cement’s additives are made primarily from recycled materials that are usually sourced locally. If the materials are not recycled into our design mixes they would normally be placed into landfills. The materials include crushed glass, calcium carbonate and lime kiln dust, gypsum, oil shale and coral dust. Each design mix will contain unique admixtures to produce a blend specific to the needs of the customer. Additionally, the use of Reco Cement’s additives allows Portland cement manufacturers and ready-mix companies to use more fly ash and granulated slag in their design mixes.