|Project Name:||Development of an Ultra-High Performance Concrete Precast Bridge Deck Element|
Office of Infrastructure Research and Development |
|Team:||Bridge and Foundation Engineering Team|
Infrastructure Research and Technology Strategic Plan and Roadmap
|Project Description:||Ultra-high performance concrete is in a relatively new class of cementitious materials. These concretes demonstrate good durability properties, high compressive strength, and usable tensile resistance. The high compressive and useable tensile resistance can lead to smaller and more efficient precast cross sections. Smaller precast cross sections result in lower member self weights, which in turn can allow for easier transportation, longer span or shallower depth superstructures, and reduced foundation requirements. The durability properties of ultra-high performance concrete specifically lend themselves toward use in the most environmentally stressed portions of the Nation's bridge inventory, namely the decks. The advanced properties of ultra-high performance concrete allow for the development of new structural systems. This research project focuses on the development of a precast full-depth bridge deck component that can be used both in new construction as well as in the redecking of existing bridges. A two-way ribbed slab system shows promise when combined with the properties of ultra-high performance concrete. As compared to standard cast-in-place concrete bridge decks, this system can be lighter in weight, develop composite action from built-in pockets, utilize the durability properties of ultra-high performance concrete while decreasing the volume of required material, and efficiently use the ultra-high performance concrete tensile and compressive resistances. The project includes component development, outreach efforts to initiate first deployment, and practical and analytical efforts to support deployment(s).|
|Start Date:||January 1, 2007|
|End Date:||September 30, 2007|
|Goals:||The key project objective is to assist stakeholders by developing a new means for the accelerated redecking of bridge structures with an extremely durable and robust system. This is to be accomplished by developing a practical optimized ultra-high performance concrete (UHPC) bridge deck element, and then working with appropriate stakeholders to begin deploying the technology.|
|Test Methodology:||Analytical methods, computational techniques, and prior experience to develop and analyze an optimized component were used as the test methodology.|
|Other Information:||This project will provide needed information to bridge engineers in terms of fundamental ultra-high performance concrete performance, optimized uses, and appropriate implementation.|
|Deliverables:||1. Name: FHWA TechBrief FHWA-HRT-07-055|
Product Type(s): Research report, Techbrief
Description: The product is a TechBrief summarizing the results of the project.
2. Name: National Technical Information Service Report PB2007-112112
Product Type(s): Research report
Description: The product is a research report detailing the full results of the project.
3. Name: Deployed Project
Product Type(s): Other
Description: The concept developed in this project has resulted in the planned construction of a bridge in the summer of 2011.
Bridges and other structures|