Durable UHPC Columns with High-Strength Steel

Rapid deterioration of bridge substructures has been one of the major reasons for the current need of rebuilding the nation’s infrastructure. Older bridges are originally designed for a 50-year service life, but ongoing repairs/retrofits and newer construction aim at extending service life to 75 or 100 years. Moreover, bridge substructures in harsh aggressive environments are even suffering faster deterioration. Thus, protecting and building durable bridge substructures is of national interest. Using durable materials with very low porosity such as ultra-high performance concrete (UHPC) is one way to achieve such goal. In addition, the exceptional mechanical properties of UHPC will lead to compact substructure elements and provide a plausible solution for accelerated bridge construction (ABC) construction where lighter and easier-to-handle and transport bridge components can be pre-fabricated and shipped to the site. Currently, most of the UHPC applications are limited to bridge deck joints and ABC connections. Only few studies considered UHPC at the full structural elements, and no previous studies properly focused on design optimization using UHPC. Using high-strength steel (e.g. Grade 100) with UHPC can further reduce bridge elements size and promote durable and sustainable ABC, which is the goal of this project.

• Record URL:
  https://abc-utc.fiu.edu/research-projects/unr-research-projects/durable-uhpc-columns-high-strength-steel/

Language

• English

Project

• Status: Completed
• Funding: $110000
• Contract Numbers:

  DTR13-G-UTC41

  69A3551747121

• Sponsor Organizations:

  Accelerated Bridge Construction University Transportation Center (ABC-UTC)

  Florida International University
  10555 W. Flagler Street
  Miami, FL  United States  33174
• Managing Organizations:

  Accelerated Bridge Construction University Transportation Center (ABC-UTC)

  Florida International University
  10555 W. Flagler Street
  Miami, FL  United States  33174

  Office of the Assistant Secretary for Research and Technology

  University Transportation Centers Program
  Department of Transportation
  Washington, DC  United States  20590
• Project Managers:

  Azizinamini, Atorod

• Performing Organizations:

  University of Nevada, Reno

  1664 N. Virginia Street
  Reno, Nevada  United States  89557

  Accelerated Bridge Construction University Transportation Center (ABC-UTC)

  Florida International University
  10555 W. Flagler Street
  Miami, FL  United States  33174
• Principal Investigators:

  Moustafa, M

  Itani, Ahmad

• Start Date: 20170601
• Expected Completion Date: 20190531
• Actual Completion Date: 20190501
• USDOT Program: University Transportation Centers

Subject/Index Terms

• TRT Terms: Bridge construction; Columns; Durability; High strength steel; Ultra high performance concrete
• Subject Areas: Bridges and other structures; Construction; Materials;

Filing Info

• Accession Number: 01711278
• Record Type: Research project
• Source Agency: Accelerated Bridge Construction University Transportation Center (ABC-UTC)
• Contract Numbers: DTR13-G-UTC41, 69A3551747121
• Files: UTC, RIP
• Created Date: Sep 21 2018 10:47AM