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.
This presentation will discuss two case studies in detail which this team of experts, who have collaborated for more than 10 years, have diagnosed and repaired post-tensioned bridges. Case studies include the inspection, testing, results and conclusions of the Mid Bay Bridge in Florida and the Cline Avenue Bridge in Indiana. With each of these case studies presenters will review factors that will help identify the culprits of corrosion that can drive infrastructure deterioration and steps to take to determine if a repair program and remediation is right for your agency.
This session will be co-presented by B&N’s Dallas Montgomery and Sivaraman Venugopalan from Siva Corrosion Services, Inc. (SCS).