Here are numerous reasons why reinforced concrete get damaged and need repair.

Environmental factors: Exposure to environmental factors, such as temperature changes, weathering, and chemical attack, can cause RCC concrete to deteriorate. For example, prolonged exposure to rain and moisture can cause concrete to crack and spall.

Overloading: Overloading of RCC structures beyond their design capacity can cause cracks and damage to the concrete. This can be caused by a sudden increase in load or by prolonged exposure to heavy loads.

Poor design and construction practices: Improper design and construction practices can lead to the use of low-quality materials or insufficient reinforcement, which can lead to structural damage.

Corrosion of reinforcement: The presence of moisture and chemicals can cause corrosion of the reinforcement within the RCC structure. Corrosion can lead to the cracking and spalling of concrete, which can weaken the structure over time.

It is important to identify the cause of the damage to RCC concrete to determine the appropriate repair method. A professional assessment of the damage and consultation with an experienced concrete repair specialist can help determine the most effective repair method and ensure the longterm durability of the RCC structure.