Concrete is one of the most durable materials you can use in your home, or even building heavy structures like bridges. But even the most durable materials have their flaws. Cracks in concrete are virtually inevitable due to a combination of factors coming from Mother Nature that are out of control.
Evaporation and contraction of water
Shrinkage is the main cause of cracked concrete. When concrete is poured, it is mixed with water to make the job easier. As the concrete dries and hardens, it also shrinks as the water in the mixture evaporates. Stresses can develop in concrete if mixed with too much water, as too much water also means a lot of evaporation and shrinkage which can result in a cracked surface. For more information on concrete cracks contact us.
As the temperature rises and falls, concrete expands and contracts. With temperature fluctuations, the temperature of interior concrete can rise and expand as the concrete surface cools and contracts. If the temperature difference is too great, cracks may appear.
All buildings and structures settle over time. As the soil under the concrete slab settles or spreads, the concrete base will support unevenly. This disproportionate support will not only cause cracks in the foundation, but it will also become extremely unstable and dangerous.
Sometimes concrete is held together with reinforcing steel or other metals. When encrusted metal corrodes, rust forms on the metal and takes up more space than metal alone. As the rust grows and stretches into the concrete, the increasing stress will eventually cause the concrete to crack.