Ozinga is proud to offer many sustainable building solutions using our high recycle concrete. Using byproducts such as fly ash and slag, we produce mixes with up to 50 percent recycled cementitious materials. We also use fewer virgin materials and reduce the amount of waste products by utilizing reclaimed water. High recycle mixes contribute to a more sustainable future and can help earn LEED certification without reducing strength or durability of roads and driveways.