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Concrete is one of the most commonly used building materials in the world, used for everything from sidewalks and driveways to high-rise buildings and bridges. However, like any other material, concrete is not immune to cracks. In fact, cracking is an inevitable characteristic of concrete structures, and it can occur due to a variety of reasons and they can have different degrees of severity.
Here are the different types of cracks in concrete :
Crazing cracks are like a web of fine, shallow cracks on the surface of the concrete. They are caused by the rapid evaporation of moisture from the surface of the concrete during the early stages of curing. This can be caused by a variety of factors, including high temperatures, low humidity, and exposure to wind or direct sunlight. The crazing of concrete is often considered a cosmetic issue and doesn't typically affect the structural integrity of the concrete.
Crusting cracks, on the other hand, are deeper and wider than crazing cracks and occur during the later stages of concrete curing. They form when the surface of the concrete dries out too quickly, forming a hard crust that traps moisture inside the concrete. This moisture then tries to escape, causing the surface of the concrete to crack. Crusting cracks can be caused by overworking the concrete, not properly curing it, or using too much water in the mix.
Also Read : How to Do Curing of Concrete & Different Curing Methods
In conclusion, concrete is prone to cracking due to a variety of factors, both structural and non-structural. While some types of cracks in concrete may not pose a major concern, others can be dangerous and compromise the integrity of the concrete and surrounding structures. It's important to prepare the site properly, use the right mix design, and follow installation and maintenance best practices to prevent cracking from occurring.
If cracks are present, prompt action should be taken to prevent further damage and ensure safety. For more tips on avoiding shrinkage cracks specifically, check out this informative video