Teraskorrosioon

Teraskorrosioon, also known as concrete corrosion, is a chemical process that causes the degradation of concrete structures. It occurs when the protective layer of concrete, known as the cement paste, is damaged or dissolved by chemical reactions. This process can lead to the deterioration of the concrete's structural integrity, making it more susceptible to physical damage and reducing its lifespan.

The primary cause of teraskorrosioon is the presence of aggressive substances in the environment, such as chlorides, sulfates, and acids. These substances can penetrate the concrete through various means, including water infiltration, atmospheric exposure, or direct contact with corrosive materials. Once inside, they react with the cement paste, breaking down its protective properties and allowing moisture and other corrosive agents to penetrate further.

Teraskorrosioon can manifest in several ways, including cracking, spalling, and discoloration of the concrete surface. It can also lead to the corrosion of embedded steel reinforcement, which is a critical component of many concrete structures. The corrosion of steel reinforcement can further accelerate the degradation process, as the expansion of the rust can cause additional cracking and spalling.

To mitigate teraskorrosioon, various preventive and remedial measures can be employed. These include using corrosion-resistant materials, applying protective coatings, and implementing proper maintenance and repair strategies. Additionally, designing structures with adequate drainage and ventilation can help minimize the ingress of corrosive agents. Regular inspections and monitoring of concrete structures can also help detect and address teraskorrosioon at an early stage, preventing further deterioration and ensuring the longevity of the structure.