The extent of damage that a single crack can inflict on concrete is easy to ignore. You might have stepped on it and not even notice it.
However, this minor crack on your sidewalk or driveway can eventually become a danger. In some cases, it can cause accidents, or worse, death.
That is why it is crucial to ensure the safety of concrete surfaces around your home so that no one will ever trip or get into an accident due to cracks.
Many concrete services in Los Angeles use polyurethane lifting foam in correcting cracks or uneven concrete.
Using it provides more advantages compared to other concrete repair methods.
That said, let’s find out how concrete cracks form and how to repair them.
Causes of Cracked and Uneven Concrete
There‘s no doubt that concrete is one of the sturdiest materials available. This is the reason why it is used in many construction projects.
Nevertheless, when used in patios, sidewalks, and patios, concrete becomes weak to cracks and breaks after quite some time.
Factors such as poor water drainage and exposure to various elements can cause this material to deteriorate.
Here are some more reasons why concrete becomes cracked or uneven:
1. Incorrect Installation
Concrete cracks can happen during installation.
When the concrete is installed in very hot weather or is overmixed, the evaporation of water happens too fast.
As a result, the mixture doesn’t have enough time to completely set on the surface.
2. Moisture Loss
When concrete doesn’t have moisture, it can form dry cracks. This can happen in a few months up to 3 or 4 years after the concrete is applied.
3. Too Much Weight
Too much weight can cause problems on concrete surfaces, even though concrete is very sturdy.
This is because it can’t bear the heaviness of a heavy truck driven or parked on such surfaces.
4. Incorrect Mixing of Materials
Concrete on walkways, patios, and driveways can deteriorate if there are elements that don’t match in the mixture.
Using salt instead of sand to pour on concrete during winter can cause chemical deterioration.
How to Repair Concrete Cracks
To repair concrete cracks, the following procedure is followed:
Make sure that there is no dirt or oil on the surface before you apply concrete filler.
You can use a cleaner to clean the grease to make sure that the filler can bond better to the cement wall.
Using a hammer and a cold chisel, remove any huge chunks in the crack.
You do this by holding the chisel at an angle and hit it using the hammer to cut the crack.
By making the inside of the crack bigger, it will be easier to cover the crack with the material.
After placing a hole in the crack, remove debris and dust by using a broom and a vacuum cleaner for thorough cleaning.
Now, it is time to use your concrete patch. Remove the nozzle of the concrete filler bottle and fill the cracks slowly.
Using mixed concrete, mix it following the packaging instructions and scoop it into the crack.
After a few minutes, check the cracks to see if the filler does not settle.
You can add more of the filler if the covered cracks don’t look right.
Wait for the filler to harden overnight or within the period indicated in the package. You can then check if you need to add more patching material.
Once patching the concrete is finished, it is recommended to seal it. Because concrete takes in stains easily, sealing can help with that.
There are many products available to seal concrete, but a good option is durable water-based polyurethane.
If the surface is rough, you can use a brush or broom. The bristles will be the ones to seal it onto the rough surface.
You can also use a roller if you are working on a smooth surface.
The good thing about using polyurethane is that it dries fast. After a few hours, you can apply the second coat.
If there is heavy traffic on the surface, it is best to apply 3 or 4 coats. It does not also have an awful smell.
Aside from being unattractive, cracked or, uneven concrete is dangerous. Nevertheless, there are ways on how you can resolve this.
Another way to effectively repair concrete cracks is to hire a concrete contractor such as LAX concrete.
Seeking the help of a professional can make your walkway, driveway, patio, and steps safe more easily.