Steel rebars play a crucial role in minimizing the risk of concrete spalling due to sulfate attack by providing reinforcement and increasing the overall strength of the concrete structure. When concrete is exposed to sulfate ions, it can undergo a chemical reaction that leads to expansion and cracking, resulting in spalling. However, steel rebars act as a reinforcement, helping to distribute the stress and load throughout the concrete, reducing the risk of cracking and spalling. Additionally, the presence of rebars helps to maintain the structural integrity of the concrete, preventing the ingress of sulfate ions and minimizing the potential for sulfate attack.
