Repairing a New Concrete Driveway That Is Flaking & Blotchy

Hold a concrete grinder over the flaking and blotchy areas and grind off the top of the concrete until the slab appears solid -- at least 1/8 inch. Refer to the grinders instructions for exact guidelines on how to use the tool.

Sweep the driveway off it with a stiff-bristled shop broom to remove all dust and debris. Hose off any remaining concrete dust. If needed, use a power washer to remove any remnants of damaged concrete, which will otherwise damage the bond with the new concrete.

Fill any deep cracks or pits in the concrete with reinforced vinyl patch compound. Use a putty knife to tamp the patch down and smooth the surface.

Fit 2-by-4-inch wood form boards on the sides around the outer edge of the driveway so the top of the boards sit about an inch above the existing surface. Use screws and a drill to attach the boards end to end.

Use a fine-napped paint roller to apply a coat of bonding adhesive over the existing surface. A paint roller makes it simple to apply an even coat without leaving brush strokes or spreading the material too thin.

Mix a bag of concrete mix in a concrete mixer with water until it is thick and well blended. Pour it over the driveway and spread it with a metal-gauge rake into the corners and sides. Drag a long board over the top of the boards to push high areas into low spots so the wet concrete is level.

Wait about 15 minutes for surface water to soak back into the concrete. Push the shop broom over the setting concrete to make narrow grooves for traction.

Cover the driveway with acrylic concrete sealer, using the paint roller after it is cleaned and dried. The sealer strengthens the slab and repels moisture.