- Topic Submission
- Discussion & Evaluation
- Development
- Project
Bridges & Structures
Is this related to or a continuation of a previous Iowa DOT research project?
No
Does this idea include matching funds?
No
Anticipated Benefits
The proposed research project will directly help to enhance the safety, mobility, and sustainability of transportation infrastructure in Iowa. In particular, this project is expected to address the issues associated with the repair and restoration of steel bridge girders subjected to corrosion. The outcome of the proposed tasks and activities will pave the way to benefit from the unique characteristics of UHPC in a new application that can have a significant contribution to improving the structural safety and performance of steel bridges.
Focus Area
Safety / Technology
BP
I truly feel this has a tremendous potential and I have a couple of truss candidates I would be very interested in repairing in this manner.
Research Program
IHRB
RFP Posted
11/15/2021
Proposals Due
01/15/2022
Project Title
Ultra High-Performance Concrete Repair of Steel Bridge Girder Ends
Project Number
TR-806
Contracted Agency
Iowa State University
Project Champion
Principal Investigator
Funding Program
Iowa Highway Research Board
Project Funding
$300,000
Project Funding Including External Sources
$300,000
Project Start Date
06/01/2022
Current Project End Date
05/31/2025
Project Abstract
Several state and county engineers are facing the daunting task of maintaining an inventory of corroding steel structures. Capitalizing on the superior strength and durability properties of ultrahigh performance concrete (UHPC), an innovative solution will be developed, tested, and demonstrated through this research project. This will lead to substantial advances in the repair and retrofit of steel bridges subjected to corrosive environments. The use of UHPC is believed to introduce a broad spectrum of benefits in both the short and long term. Specifically, UHPC offers a workable repair that can be applied in the field with minimum equipment requirements. This significantly expedites the repair process, resulting in minimized road closures and traffic disruptions. When repaired using UHPC, steel girders will not only regain their lost structural capacity but will also be protected against corrosive environments by a strong yet passive layer. This is an important feature, which will greatly extend the expected service life of steel bridge girders without having to repeat maintenance actions every few years. To achieve the ultimate goal of this research project, a holistic set of research tasks and activities have been planned, including conceptual designs, numerical simulations, laboratory investigations, and a field demonstration. With the development of supporting technology transfer materials, the outcome of this project is expected to pave the way to utilizing the advantages of this repair solution for future use and implementation in various state- and county-owned steel bridges.
Project Champion
Project Manager
Delivering targeted solutions for Iowa's transportation future.
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