SAKRETE 80 lb. High Strength Concrete Mix is a high-quality mix designed to provide outstanding strength and durability. Made from a special blend of sand, coarse aggregate and cementitious materials, this concrete mix can be used for new construction or repairs where concrete thickness exceeds 2 in. (51 mm). Use it for constructing slabs, driveways, walkways, steps and more.Use for: driveways, patios, foundations walls and footings, curbs, stairs and structural applications requiring a small volume of concrete