Posted on: 16 September 2016
When areas of your concrete driveway or patio become damaged with surface cracking and flaking, you don't need to tear out the entire concrete surface for replacement. Repairing only the damaged sections of concrete can save you time and money. Here are instructions to help you make repairs to your concrete's surface damage.
Remove the Damaged Surface Section
To repair any sections of spalling concrete on your driveway or patio, first you need to cut into the concrete around the damaged areas, preparing to remove the damage. Use a circular saw with a blade that will cut through the concrete. A diamond blade is the best type option, but you can also use a corundum masonry blade. Cut into the concrete at least three-eights of an inch deep, making straight cuts. Next, use a chisel and hammer to remove the damaged surface section of concrete inside your blade cuts.
Mix the Concrete
Prepare your concrete mixture by combining bagged dry concrete mix with water, following the package's instructions. You can mix it together with a shovel in a five-gallon bucket or a wheelbarrow, depending upon the amount of concrete you need for the repairs. If you want to combine your own concrete mixture, use the appropriate measurements: One part Portland cement and three parts fine sand, combined with water until your mixture is the consistency of thick oatmeal. You can find each of these concrete mixture components at most home improvement stores or at a concrete supply store.
Prepare the Surface
Next, you will need to clean the chipped-out section of concrete with a broom, shop vacuum, or pressure washer. It is important to completely clean the area to prepare it for the new layer of concrete to adhere properly. If you used a pressure washer, allow any standing water inside the repair area to dry or blot it dry with a towel.
If the area is not already wet from pressure-washing, moisten the chisel-chipped area of concrete with water, using a wet rag or a sponge, being careful to not create any pooling areas of water. This helps the concrete make a good bond with the existing concrete and prevents air pockets from becoming trapped between the old and new layer. With a trowel, smooth the concrete mixture onto the moistened area, pressing it into any grooves and cracks.
Apply the New Concrete
With the trowel, slightly overfill the concrete patch. Next, use a wooden two-by-four to smooth the surface of the concrete and remove any excess concrete. Make sure that the two-by-four is longer than your patch area, so you can make one smooth pass over the top to make the surface uniform.
Allow the concrete to cure and dry for up to 48 hours before walking across the repairs. For more information, contact Island Ready-Mix Concrete or a similar company.Share