Reinforced concrete deterioration

Reinforced concrete is a conglomerate made ​​up of concrete with embedded steel bars inside, characterized by high mechanical strength and therefore widely used in the construction industry. Also if strong and durable, it is subject, such as all building materials, to the effects of degradation due to weathering exposure, structural movements or to exceptional events such as earthquakes.

Anyway, the most common deterioration factor remains the rust formation on the reinforcement steel bars, caused by the penetration of oxygen (via air or dampness) up to the surface inside of the armature iron. The rust increases the volume of iron, resulting in swelling and detaching of the concrete, which "break" the surface continuity, thus reducing the structure mechanical strength.