Concrete Driveways - The Correct Concrete Mix

A 4000-psi, .50 water-to-cement ratio is best for driveway construction. This provides better wearability and a "denser" concrete than the typical 2500-psi mix. Concrete is permeable and "wicks" moisture from beneath the slab. With the moisture come salts from the soil which can leave efflorescence on the surface. The .50 w/c mix provides a geometric reduction in this "wicking" action.

Concrete Driveway Mix

Decorative Concrete Institute in Temple, GA

Excess water should not be added at the project site, as this will dilute the water to cement ratio.

In cold climates, air entrainment should be added to the concrete at the batch plant. This entrained air allows any moisture which does enter the concrete to expand in the microscopic air pockets during a freeze/thaw cycle instead of putting internal pressure on the concrete.

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