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FHWA Resource Center

STRUCTURES TEAM

Fiber Reinforced Polymer (FRP) Composits


NewIn-Situ Monitoring and Testing of IBRC Bridges in Wisconsin

The Wisconsin Department of Transportation has released a report that explores sources of potential deterioration, identifies aspects of the bridge superstructures likely to enhance durability, and quantifies the effectiveness and potential for deterioration of the load transfer mechanisms present at two highway bridges constructed using novel fiber-reinforced polymer (FRP) composite stay-in-place formwork and an FRP grillage reinforcement system.

Copies of the report may be obtained by contacting Lou Triandafilou of the FHWA Resource Center, lou.triandafilou@dot.gov

Design Example of Simple Span T-Beam Strengthening with Fiber Reinforced Polymer Composites – July 2009

This design example was prepared by Mr. Jeff Smith, P.E., a structural engineer formerly with the FHWA Resource Center, and now with the FHWA Kentucky Division Office. Ms. Deborah Vocke, Marketing Specialist with the Resource Center, finalized the layout of the document. It is being posted as a technology product of the FHWA Fiber-Reinforced Polymer (FRP) Composites Virtual Team.

The example illustrates the design of an interior reinforced concrete T-beam strengthened with FRP composites to meet the AASHTO Load and Resistance Design (LRFD) Bridge Design Specifications, Third Edition, Customary US Units and through the 2006 Interims. The existing bridge is designed for HS-20 live load and strengthened for HL-93 live load. American Concrete Institute Committee 440 procedures are used for the FRP system design.

The design example provides a straightforward, step-by-step procedure that can be applied as a ready reference toward the design and/or review of similar reinforced or prestressed concrete bridge members strengthened with FRP composites. The document will be a handy tool to use in advance of a guide specification for design of externally bonded FRP systems for strengthening concrete bridges, which is currently under review by the AASHTO T-6 Technical Committee on Composites.

Copies of the document may be obtained by contacting Mr. Lou Triandafilou, P.E., senior structural engineer with the FHWA Resource Center, at (410) 962-3648.


Innovative Solutions

Thermomechanical Durability of Carbon Fiber-Reinforced Polymer-Strengthened Reinforced Concrete Beams

Plastic bridge in Huron County may be path to the future

Guide published for FRP use in pedestrian bridges

ACI Offers New and Updated Documents on Fiber-Reinforced Polymers (FRPs)

Showcase on FRP composites in Bristol, VA on October 20th-21st, 2006.
These documents can be found in the center of the web page under "General Information - Conference Presentations"

A report titled, "Performance of Bridge Decks with Glass Fiber-reinforced Polymer Bars as Top Mat of Reinforcement"

Fiber Reinforce Polymer (FRP) PDF fact sheet
Fiber Reinforce Polymer (FRP) Web Page

Professors Take Space-age Materials to New Heights in Bridge Research

Evaluation of the Economic Feasibility of Fiber-Reinforced Polymer Bridge Decks Word Doc
Evaluation of the Economic Feasibility of Fiber-Reinforced Polymer Bridge Decks Web Page

European Pultruders Association Web Page

Conference on Polymer Composties II - 2001 Memorandum Web Page

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