Concrete is an extremely strong material, but it does have its limitations. One of the biggest problems with concrete is that it is susceptible to cracks and other forms of damage. This is why concrete needs reinforcement, in order to help it withstand the forces that can cause cracking and other types of damage. The most common type of reinforcement for concrete is steel rebar, which is used to help resist the forces that can cause cracking. In addition to steel rebar, concrete can also be reinforced with other materials, such as fiberglass or carbon fiber. No matter what type of reinforcement is used, the goal is always the same: to help make concrete even stronger and more resistant to damage.