Repairing concrete can be a daunting project for many people. Concrete is made of paste and rocks. It is the most used building material in construction sites since it is resilient. Although tough, it can easily crack and degenerate resulting to crumbling. The main reason for this is moisture and extreme temperature changes. However, with the right tools, it is easy to repair. The repairs require a few tools and no special skills but since it requires a lot of bending, you should have a strong back. The most important thing to remember is to wear protective clothing like welding glasses and gloves that are not easily destroyed.
The items you will need are a brush, chisel, hammer, repair concrete in a bottle and a sealant. Repairing concrete and doing driveway repairs Auckland can be done on cracks, edges on concrete walks and corners. If the repair is on an edge, use a small piece of wood as a form and a brick to hold it in place as you trowel and flatten the repair concrete over the damaged area When the damaged concrete is on a corner use two small pieces of wood by first securing them together to create a corner then place them against the corner you need repaired and use bricks to hold them in place. Making sure the top is flush with the rest of the floor, trowel the mixture into the area and tamp to avoid air pockets.
When you are repairing a crack, make sure the area surrounding the crack is clean and free from debris and dirt. If the crack is smaller than % “, widen it using a chisel and hammer. Remove all the loose material using a brush. Clean the surface with a stream of clean water and dry it off with a cloth.
The next step is cutting the concrete repair bottle until its width is the same as the crack. Squeeze the cement from the bottle into the crack until it fully fills up all the way through. You can then use a trowel to flatten the added cement until it is at the same level as the rest of the surface. The cement will begin to harden after 30 to 40 minutes and will have completely dried in about 3 hours.
Cut open the sealant to the same width as the crack and fill the crack to above the surface level to allow for shrinkage. If the crack is bigger than 1/4”, use the sealant as many times as needed giving it 24 hours before each application. This interval allows the sealant to settle into the crack correctly.
If your time is limited, you can use self-leveling sealant. After cutting the top to the same width as the crack, move it slowly over the crack allowing it to dry. This sealant only requires two additions as it is self-leveling and they should be done one after another to allow them to dry at the same time.
Excessive sealant left on the closed crack should be cleaned up using a solvent or a citrus-based cleaner immediately to avoid it drying over the rest of the surface. Removing paint from concrete is done by a pressure wash and then scrubbing the area with a brush. You then apply a chemical paint remover. Repeat the process again until all the paint is gone.