Concrete, no matter how well they’re installed, will get cracked over time. When this happens, you need to call qualified Fishers concrete contractors to get them repaired. By doing so, the cracks are addressed properly and the strength of the concrete is restored.
There are different types of concrete cracks although they can be categorized into two groups, such as the moving and static cracks. Between these two, moving cracks are the ones more serious and require immediate attention.
Static vs Moving Cracks
Static cracks are usually characterized by minor flaws that affect only the surface of the concrete. These are the hairline craze cracks or the plastic shrinkage cracks that you commonly see. They don’t necessarily have to be repaired, and they’re usually addressed by the usual surface preparation method.
Moving cracks, on the other hand, are more severe. They are also referred to as the active cracks, and the damage affects the concrete’s structure. They tend to go through deep into the concrete’s surface, thus causing control joints sequencing and insufficient spacing. They are usually formed by improper isolation of old and new concrete and poor subgrade compaction.
When Do You Need Concrete Repair?
The rule of thumb, concrete cracks that are about the size of the width of credit cards need to be repaired. High are the chances that they’re moving cracks and have to be addressed before doing anything else, especially before resurfacing the slab. All borderline cracks are also structural cracks. They may not be as wide or may look like hairlines but they can get very unstable and wide. For these types of cracks, the old concrete has to be removed and replaced.
To make the concrete repair easier, below are some of the methods that professional concrete contractors follow. Consult with them to know which of these methods is best for your needs. Each technique may require a different set of tools and materials than the rest.
- Clean &FillTechnique.
This technique calls for routing out the cracks by using angle grinders. You also have to take out all debris using a shop vac or compressed air machine. Once those are done, just fill up the crack using polyurea-based products or other similar semi-rigid ones.
- Control JointsInstallation Technique.
Here, the cracks are filled and then new control joints are installed. The new joints are saw-cut to effectively seal the cracks and relieve all contraction and expansion stresses on the concrete and the slabs.
- EpoxyInjection Technique.
While cracks are not likely to appear again using this repair method, it does require some skill upon application. This technique is also rather costly and time-consuming. To do it, you have to mount ports over the crack according to the thickness of the concrete. The epoxy is injected through these ports with the use of a special pump to ensure that the cracked is thoroughly filled.
- CrackStitching Technique.
Here, you drill holes on the crack’s two sides. Using wires or metal strips span the epoxy or grout in place. This is also an expensive and time-consuming concrete repair method but it is generally effective.