What Causes Concrete Slabs to Crack?

Concrete is considered as the most economical and long-lasting materials for building that’s every devised by man. Once the concrete is placed properly as well as in the right application, there’s a big possibility that it can last for a very long time. But, nothing good can last forever as well as concrete is never an exception. Concrete can crack – it’s simply a matter of when. In fact, you can take a look at the driveway, sidewalk, or even the store floors where the concrete material is not covered with anything like tiles. They also have cracks.  

Concrete Slabs

As a matter of fact, some of those cracks, no matter how large or small they are, appeared within just hours of pouring. On the other hand, others took many years to take place. But, the question is, why do concrete slabs crack?  

Plastic shrinkage cracks often occur the moment water evaporates very quickly from a surface. This can actually cause the slab’s top area to dry quickly compared to the bottom area and because of that, they pull each apart. Most of the time, this happens during windy or hot season, or during days with low humidity. Therefore, in order to avoid this problem, it is highly advised by expertconcrete contractors near me that you use proper curing steps. The major key is to simply keep the entire surface moist. As a matter of fact, this can be performed through place wet mats, towels or burlap on the concrete slab. Furthermore, you can also be able to put a sprinkler on the mist mode as well as simply let it run. 

Aside from that, there are also some chemicals that you can apply, which retard the evaporation of water. The time to start any of these particular processes if right after a final application of trowel as well as when the concrete has already stiffened to a point that the wet burlap bag will not leave any mark or impression of the surface of the concrete. 

Also, in extremely warm weather, this might have to be continued for a few days. It might seem silly to water a new concrete slab or structure the way you should with new grass, however, that’s exactly what you have to do in order to make sure that the structure will be dependable and can last for a longer period of time. Not to complicate certain things, however, it’s actually possible on overcast, cool days that you do not need to perform any of these processes. 

Settlement cracks often occur the moment the ground under a concrete slab moves. As a matter of fact, this can be because of a soil that is poorly compacted, tree roots, water erosion, or even the wrong kind of sand or soil. The moment you have a soil that is poorly compacted, you have to dig it out as well as replace it with crushed stones prior to placing the concrete back. To know more about the reasons why cracks appear on concrete, it’s best that you contact a professional.

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