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FHWA continues to promote the use of UHPC for new construction, repair, and preservation. Updates related to UHPC will continue to be provided quarterly through this bulletin.
AASHTO Publishes Guide Specifications for Structural Design with UHPC
AASHTO recently published the Guide Specifications for Structural Design with UHPC. These guide specifications mirror Section 5 (Concrete Structures) of the AASHTO LRFD Bridge Design Specifications and cover key aspects of structural design. The publication of these specifications will allow designers to begin to take advantage of the enhanced properties of UHPC for structural applications. The guide specifications can be accessed through AASHTO at this link.
FHWA also recently published an accompanying report (FHWA-HRT-23-077) that includes a pair of related design examples. The first example focuses on using the methods in the design framework to analyze the behavior of a rectangular beam. This example can be found in Appendix B—Analysis of a Rectangular, Mild Steel Reinforced UHPC Beam. The second example demonstrates the design of a slab-on-stringer bridge superstructure using pretensioned girders. This example can be found in Appendix C—Design Example of a Pretensioned UHPC I-Beam Bridge with a Conventional Concrete Deck.
FHWA is also developing a one-day workshop and additional training materials to help engineers design UHPC structural components. More information on these will be released in future bulletins.
Unless otherwise noted, all images sourced from FHWA.
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Need Funds for an Innovative Idea?
Let’s Innovate! The Accelerated Innovative Deployment (AID) Demonstration provides incentive funds to eligible entities to accelerate the implementation and adoption of innovation in highway transportation. 2024 AID Demonstration solicitation for FY 2024 is open and the Federal Highway Administration (FHWA) plans to award up to $12.5 million in grants. Learn about AID Demonstration and the 127 grants and more than $95.7 million dollars that FHWA has awarded since its launch in 2014. AID Demonstration funds are distributed through a competitive discretionary grant process. The required Notice of Intent must be submitted to grants.gov on or before April 16, 2024, with an application deadline of May 28, 2024. Details on this funding opportunity are available on the AID Demonstration webpage and Grants.gov (search for funding opportunity 693JJ324NF-AIDDP).
Recent Publications Related to UHPC
FHWA has recently released numerous publications related to UHPC. Here is a summary:
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UHPC Link Slab Design Example (FHWA-RC-23-0004) - link
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Structural Design with UHPC (FHWA-HRT-23-077) - link
- “Assessing Durability Properties of Ultra-High Performance Concrete-class Materials” (Materials and Structures, Volume 56, September 2023) - link
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Ultra-High Performance Concrete (UHPC) Overlays: An Example of Lifecycle Cost Analysis (FHWA-HRT-23-012) - link
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Design and Construction of UHPC-Based Bridge Preservation and Repair Solutions (FHWA-HRT-22-065) - link
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Assessing Chloride Ingress Through Construction Joints in UHPC Overlays (FHWA-HRT-22-078) - link
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Techniques to Inhibit Corrosion in Bridge Deck Reinforcement Prior to Overlay Installation (FHWA-HRT-22-087) - link
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Electrical Resistivity Testing to Rapidly Assess the Durability of UHPC-Class Materials (FHWA-HRT-21-095) - link
- “Mechanical Behavior and Design Properties of Ultra-High Performance Concrete” (ACI Materials Journal, Volume 119, January 2022) - link
- “Flexural Behavior and Design of Ultra-High Performance Concrete Beams” (ASCE Journal of Structural Engineering, Volume 148, January 2022) - link
- “Shear Behavior of Ultra-High Performance Concrete Pretensioned Bridge Girders” (ASCE Journal of Structural Engineering, Volume 148, January 2022) - link
- "Shear Design of Strain-Hardening, Fiber-Reinforced Concrete Beams" (ASCE Journal of Structural Engineering, Volume 149, February 2023) - link
- “Interface Shear of Ultra-High-Performance Concrete” (ACI Structural Journal, Volume 119, January 2022) - link
- "Monolithic and Non-Monolithic Interface Shear Performance of Ultra-High Performance Concrete" (Engineering Structures, Volume 281, April 2023) - link
- "Prestress Loss Model for Ultra-High Performance Concrete (UHPC)" (Engineering Structures, Volume 252, February 2022) - link
More details on FHWA's work in UHPC can be found at this link.
Unless otherwise noted, all images sourced from FHWA.
The U.S. Government does not endorse outside entities, products, or manufacturers. Names are included for informational purposes only and not intended to reflect a preference, approval, or endorsement of any one entity or product.
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