Renew an old concrete patio with decorative brick or concrete pavers. No need to tear out an ugly slab—just hide it! The post ...

thick concrete overlay on top of the milled and swept base. Paulsen had used its 3D guidance system before on its GOMACO GP-2600 paver, but this was the first time for the GP-2400 and its paving crew.

Well, you could remove the six-inch structure and start over, or you could rubblize it and top it with a hot mix asphalt overlay, or you could "crack and seat" the old concrete and then top it ...