Beneath the surface of visibly sound concrete bridges lies a potentially significant disease that can cause corrosion and deterioration. If left untreated, it can shorten the service life and reduce the load carrying capacity of post-tensioned (PT) bridges. PT bridges built before the early 2000s are susceptible to structural deficiencies. This is due to the poor grouting materials and construction procedures that were utilized at that time. Accessing and determining the condition of bridge tendons – the primary structural element on PT structures – requires a team experienced with the most current testing procedures.
Without the knowledge of what factors are driving deterioration, the solution may not be effective. The goal is not just to identify symptoms, but to determine, treat and cure the underlying disease.
The presenters will discuss two post-tensioned bridge case studies in which corrosive conditions were diagnosed and repaired.