How to Do It
Cracks in your driveway, walkway, or steps are a big-time trip hazard, and they'll only get worse if water seeps in and freezes. Luckily, if you can caulk, you can fix concrete—just make sure it's clean and dry to start. For cracks less than a half-inch wide, squeeze a bead of acrylic latex concrete repair compound deep into the crack, smoothing excess with a putty knife. For larger cracks, trowel on a vinyl concrete patching compound, and let it cure one day before walking on it, three days before driving over it.