A long performance history dating to the time of the Romans shows that concrete can be a very long-lasting material that requires very little routine maintenance. However, concrete is not invincible.
Under certain circumstances, concrete can become deteriorated and distressed. Spalling, scaling, and cracking can diminish the appearance and functionality of the concrete structures resulting in occupant complaints, hazards, and increased maintenance. If left unchecked, these conditions can lead to structural or performance failures requiring extensive and expensive repairs.