How to Resurface a Concrete Driveway | DoItYourself.com
Step 2 - Apply Concrete-repair Caulk. Take a caulking gun and apply some concrete-repair caulk inside the cracks or damaged areas of your concrete driveway. This will only apply to cracks that are 1/2 inches wide or bigger. Use a putty knife to smooth out the concrete-repair caulk such that it is level with the surface of the driveway.