Accelerated Repair of Existing Bridges Using UHPC

November 1, 2018 1:00 pm

In this quarterly Research Seminar, Atorod Azizinamini, Ph.D., P.E., Principal Investigator; Mahsa Farzad, Ph.D. student; and Alireza Valikhani, Ph.D. Student,  present work under the ABC-UTC research project entitled Alternative ABC Connections Utilizing UHPC conducted at Florida International University in Miami.

Seminar Documents:
Accelerated Repair of Existing Bridges Using UHPC - pdf of presentation

Description: Within the U.S. bridge inventory, a significant number of bridges need replacement or retrofit due to various reasons. The lack of funding demands that owners get the most out of existing bridges, extending their service life or upgrading their capacity. UHPC provides an opportunity to retrofit damaged elements of bridges and even produce elements that are stronger than the original design. Significant research studies are being carried out at Florida International University, sponsored by the USDOT through the University Transportation Program, to develop UHPC technologies for repairing and upgrading existing substandard bridges. This presentation provides a summary of efforts underway and completed, with design and construction recommendations based on the completed portion of the work.

Presenters:

 

Atorod Azizinamini, Ph.D., P.E.
Professor and Chair
Civil and Environmental Engineering Department
Florida International University

 


Mahsa Farzad, Ph.D. student

(Ph.D., Spring 2019, FIU)
Civil and Environmental Engineering Department
Florida International University

 


Alireza Valikhani, Ph.D. Student

(Ph.D., Fall 2019, FIU)
Civil and Environmental Engineering Department
Florida International University

Presentation Graphics: 

Figure 1. Caging the specimens

Figure 2. Casting supports

Figure 3. Simulating typical column damage

Figure 4. Casting substrate

Figure 5. Surface preparation

Figure 6. Stirrups replacements

Figure 7. Casting UHPC

Figure 8. Specimen after test

 

 

Figure 9. Supports repairing

 

Figure 10. Damaged specimens after repair

Figure 11. Specimen after test

Figure 12. UHPC flowability test on mock-up T-section specimen

Figure 13. Test specimen demonstrating methods for retrofitting substandard bridges