Flexural Strengthening of Non-Uniformly Corroded RC Bridge Piers Using Ultra-High-Performance Concrete Layers

In this study, a strengthening method was developed for reinforced concrete (RC) bridge piers with non-uniform corrosion (NUC). Three half-scale RC bridge piers with the same dimensions and rebar arrangements were experimented under reversed cyclic loading, where an axial stress equal to 1 MPa was applied to the specimens. Two specimens were subjected to NUC, where the average corrosion ratio was 10% and the other specimen was used as a control specimen. One corroded specimen was retrofitted with 50 mm thick ultra-high-performance concrete (UHPC) layers. The experimental outcomes revealed that non-uniform rebar corrosion leads to a significant reduction in maximum load-carrying capacity (MLC) and ductility. The ductility and MLC were decreased by 17% and 6%, respectively, compared to the sound specimen. However, the non-uniformly corroded RC bridge pier reinforced with UHPC layers demonstrated superior structural performance in terms of the above-mentioned performance indicators, i.e., the corroded specimen strengthened with UHPC layers demonstrated 24% greater MLC than the sound specimen. Experimental results revealed that the proposed method can be very useful in strengthening non-uniformly corroded RC bridge piers.

• Record URL:
  • https://doi.org/10.1061/9780784485798.048
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784485798
• Supplemental Notes:
  • © 2024 American Society of Civil Engineers.
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Biswas, Rajib Kumar
  • Misawa, Takashi
  • Saito, Takahiro
  • Iwanami, Mitsuyasu
• Conference:
  • 10th Congress on Forensic Engineering
  • Location: Seattle Washington, United States
  • Date: 2024-11-1 to 2024-11-4
• Publication Date: 2024

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 469-475
• Monograph Title: Forensic Engineering 2024: Finding Answers to the What, Why, Who, and How of Preventing Failures

Subject/Index Terms

• TRT Terms: Bridge piers; Corrosion; Reinforced concrete; Reinforcing bars; Retrofitting; Structural strengthening; Ultra high performance concrete
• Subject Areas: Bridges and other structures; Highways; Maintenance and Preservation;

Filing Info

• Accession Number: 01937951
• Record Type: Publication
• ISBN: 9780784485798
• Files: TRIS, ASCE
• Created Date: Nov 25 2024 10:31AM