Concrete is extremely durable, but it can crack if improperly installed or mishandled. It may be an eye-sore and not a problem, but cracks in concrete driveways or garages can have a negative impact on the property's value. You can repair concrete fairly easily so don't be afraid of giving it a shot. There are many DIY concrete repair kits you can choose from. Epoxy, which is a 2-component, polyurethane polymer, doesn't require routing, fills small cracks, cures quickly, and can be applied to concrete at freezing temperature, is the best material. It is possible that a temporary solution may be necessary depending on the original cause of cracked concrete.

Cracked Concrete: Some Common Reasons

Subbase Issue: Concrete can settle more in one spot than across the entire surface if the sub-base was not compacted properly. The concrete will eventually start to sink and become uneven, leading to cracks.

Cold Temperatures Winter is concrete’s worst enemy. Concrete will crack when it is exposed to water.

Concrete shrinks upon drying This is normal. Concrete that has been cured improperly or too wet can crack. Expansion joints should be cut into the concrete floor to prevent it from cracking after drying.

It may be temporary, depending on what the reason is for cracking concrete. Concrete cracks may need to be removed from the sub-base and redone. Because concrete tends to shift again, it will not be possible to repair the crack. It is possible to repair the crack by freezing temperatures. Concrete that has cracked from shrinkage should be repaired permanently.

How to Repair a Crack

1. First, you will need to key your crack. This can be done with a combination of a drill and a saw to reduce the crack's width. This will ensure a better repair.

Tip. If the crack appears very small or narrow, a file may be necessary to make it wider in order for a permanent repair.

2. A wire brush can be used to clean out cracks and loose items that have fallen in or been knocked off the surface. To remove all particles, you can use a vacuum.

3. You can wash the area with water to remove any dust or debris. Before you begin your repair, remove any oil or grease from the area.

4. Put concrete repair resin in the crack.

5. Fill the crack using dry silica.

6. Pour more resin on the sand to fill the crack.

7. Let the mixture dry for at least 10-15 minutes. Next, use a putty knife or a scraper to smoothen and level it.

8. If the surface is uneven or looks unfinished, you can sand it to make it smoother.