Here are some of the most common reasons why concrete may crack:
Shrinkage: Concrete shrinks as it dries and cures, and this can cause cracks to form. This is the most common cause of concrete cracking, and it happens because the concrete loses water during the drying process, which leads to shrinkage.
Thermal Changes: Temperature changes can cause concrete to expand or contract, leading to cracking. For example, if the concrete is exposed to extreme heat or cold, it may expand or contract, causing cracks to form.
Overloading: Concrete can crack if it’s subjected to more weight or pressure than it can handle. This is especially true if the concrete is not properly reinforced or if it’s already weakened due to age or exposure to the elements.