Ultra-High-Performance Concrete (UHPC) for Bridge Deck Overlay and Structural Deck Repair

Recently developed NDOT non-proprietary UHPC mixture for precast and cast-in-place applications does not meet the specific requirements for deck overlay (e.g., interface bond with existing deck, high thixotropy, workability retention, sloped construction, and increased fiber content). As shown in Figure 2, the current project will, therefore, primarily focus on bridge Deck overlay and Structural deck repair, which completes the NDOT roadmap for promoting the use of UHPC in bridge applications. Besides the high (early- and ultimate-) compressive and tensile strength, UHPC is expected to provide much better resistance to freeze-thaw cycles, chloride ion penetration, and shrinkage-induced cracking than conventional concrete and asphalt overlay, and structural repair materials. Mixtures and guidelines are urgently needed to be developed to better control the workability and stability of UHPC in both static and dynamic conditions for successful UHPC overlay construction.

Language

• English

Project

• Status: Active
• Funding: $152,761.00
• Sponsor Organizations:

  Nebraska Department of Transportation

  1500 Nebraska 2
  Lincoln, NE  United States  68502
• Project Managers:

  Halsey, Lieska

• Principal Investigators:

  Hu, Jiong

  Morcous, George

• Start Date: 20230701
• Expected Completion Date: 20250531
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Bridge decks; Cast in place concrete; Overlays (Pavements); Ultra high performance concrete
• Identifier Terms: Nebraska Department of Transportation
• Subject Areas: Pavements; CONCRETE; I32: Concrete; I53: Construction of Bridges and Retaining Walls;

Filing Info

• Accession Number: 01881387
• Record Type: Research project
• Source Agency: Nebraska Department of Transportation
• Files: RIP, STATEDOT
• Created Date: Apr 27 2023 4:42PM