“Uncompacted design, or variable depth paving, allows for a smooth final surface even if the underlying surfaces aren't smooth to begin with.” All About That Base.

Ideally 1 to 1-1/2 inches of mix overlap is all you want. That’s enough mix to allow blending of uncompacted new mix into the compacted old mix.

If uncompacted, or poorly compacted, soil or fill sinks under a slab you end up with a hollow spot. If you drive on this concrete and apply pressure to it, the concrete tries to bend or stretch to ...

A: Uncompacted fill under a concrete slab is a recipe for disaster. Concrete has tremendous compressive strength. If you squeeze it, it often takes more than 3,000 or 4,000 pounds of pressure per ...