Concrete Carbonation: Understanding Its Impact on Reinforced Concrete Durability
Reinforced concrete is one of the most widely used materials in modern construction because it combines concrete’s compressive strength with the tensile capacity of steel reinforcement. Over time, environmental conditions can influence the properties of concrete, making concrete carbonation an important topic in structural durability. Understanding carbonation helps engineers and construction professionals plan concrete with suitable quality, cover and curing practices, supporting the long-term protection of reinforced structures. What Is Concrete Carbonation? Concrete carbonation is a chemical process in which carbon dioxide from the surrounding atmosphere penetrates concrete and reacts with components of the hydrated cement paste. This reaction gradually reduces the alkalinity of the concrete near the exposed surface. As the carbonation front progresses deeper into the concrete, it can eventually reach the embedded steel reinforcement. The rate of carbonation depends on ...