Influence of Revising CFCC Guaranteed Strength on Performance of CFCC Prestressed Highway Bridge Beams Subjected to Various Environmental Conditions

Based on extensive tensile test results, the manufacturer of carbon fiber composite cable (CFCC) strands updated the guaranteed breaking load of different strand diameters to reflect the current material strength with the proper safety margin. The guaranteed breaking load of 0.6-in. CFCC strands increased from 60.7 kip to 66.2 kip. Similarly, the guaranteed breaking load of 0.7-in. CFCC strands increased from 78.7 kip to 86.6 kip. The new guaranteed breaking loads are corresponding to a guaranteed strength of 370 ksi for both diameters. The increase in the guaranteed strength ensures an efficient and economical use of the material. Nevertheless, implementing the new value in the design and construction of highway bridge beams necessitates the support of comprehensive experimental and analytical investigations to adequately predict the performance of the constructed beams under different loads and environmental conditions. This will be similar to the extensive experimental and numerical modeling program conducted for the 0.6-in CFCC strands.

Language

• English

Project

• Status: Active
• Sponsor Organizations:

  Michigan Department of Transportation

  Murray Van Wagoner Building
  425 West Ottawa, P.O. Box 30050
  Lansing, MI  United States  48909
• Performing Organizations:

  Lawrence Technological University

  Department of Civil Engineering
  21000 W. Ten Mile Rd
  Southfield, MI  United States  48075-1058
• Principal Investigators:

  Grace, Nabil

• Start Date: 20210901
• Expected Completion Date: 20240930
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Breaking loads; Bridge construction; Bridge design; Cables; Carbon fibers; Composite construction; Highway bridges; Strength of materials
• Subject Areas: Bridges and other structures; Construction; Design; Highways; Materials;

Filing Info

• Accession Number: 01851425
• Record Type: Research project
• Source Agency: Michigan Department of Transportation
• Files: RIP, STATEDOT
• Created Date: Jul 14 2022 12:59PM