SAKRETE 5000 Plus 80 lb. High Strength Concrete Mix. Professional grade blend of Portland cement, sand and gravel that is formulated to reach strength quicker and for superior durability. For repair and building jobs where concrete thickness exceeds 2 in. Ideal for structural applications requiring a small volume of concrete. Rapid setting ready for foot traffic in 12 hours. Use for driveways, slabs, patios, walkways, curbs, stairs, foundation walls and more.