Sakrete 5000 Plus Concrete Mix is a professional-grade blend of portland cement, sand, and gravel formulated to reach strength faster than standard concrete mixes, especially in cold weather, and deliver superior durability. Ideal for all repair and building jobs where concrete thickness exceeds 2". Open to foot traffic in just 12 hours. Sakrete 5000 Plus Concrete Mix is also a preferred product for creating concrete countertops 1.5" thick or greater.