Link to Latest Report: December 2019 Progress Report
Many bridges in the Unites States are ageing and due for repair or strengthening. Corrosion of prestressed girder ends is a prevalent problem that significantly reduces the bearing capacity of bridges. Moreover, over-height vehicles continue to collide and impact bridge girders around the country, which compromise the flexural capacity of bridge girders. Several research studies and state DOTs initiatives looked into innovative repair and strengthening methods for girders end zones and/or mid span impacts. The goal of this project is to synthesize the available literature on bridge girders repair methods with focus on prestressed girders and end zones damage. The synthesis will summarize and compare the design and application procedure of different methods to provide a guide or catalog for bridge engineers working on girders end repair.
The objective of this project is to collect all the available information from research studies and DOT practices on prestressed girders end repair, and synthesize this information for a comprehensive summary of the methods and application procedure and guidelines.
The project objective will be achieved through a series of tasks as follows.
- Task 1 – Conduct comprehensive literature search on girders end repair methods
- Task 2 – Categorize all the available information based on material of repair, method of application, etc.
- Task 3 – Reach out to representative state DOTs for feedback on preferred repair methods
- Task 4 – Synthesize results from previous tasks in a final report and provide guidelines on selection of best repair method
Principal Investigator: Dr. Mohamed Moustafa
Research Assistant: Azin Ghaffary