Optimizing Performance Characteristics of Steel Fiber-Reinforced Lightweight Concrete (SFRLWC) for Wearing Surface Application on Orthotropic Steel Decks

Proper design and selection of wearing surfaces can significantly enhance the fatigue life of the bridge, contributing to a cost-effective rehabilitation of such bridges. In addition, new orthotropic decks can be built, that are cost-competitive with other types of bridge configurations. A steel fiber-reinforced lightweight concrete (SFRLWC) wearing surface recently designed for use on the Poplar Street Bridge (PSB) provides stiffness to the flexible orthotropic steel deck while at the same time exhibiting less sensitive thermal softening characteristics compared to polymeric or asphalt-based wearing surfaces. The wearing surface on the PSB also uses continuous steel reinforcing bars and shear studs to anchor the wearing surface to the deck plate. The need for use of continuous reinforcement with low clear covers can be eliminated with proper engineering of the fiber composite system. Optimizing the design of the fiber reinforced concrete composite for this application will allow superior performance and reduced costs by also allowing a redesign of the currently used shear-stud-based anchoring system. Mechanical and durability characteristics desired in wearing surfaces can also be engineered in the systematic optimization of the SFRLWC composite proposed.

• Record URL:
  http://www.intrans.iastate.edu/mtc/index.cfm/research/project/project/-1656203067

Language

• English

Project

• Status: Active
• Funding: $126,500.00
• Contract Numbers:

  DTRT13-G-UTC37

• Sponsor Organizations:

  Midwest Transportation Center

  Iowa State University
  2711 S Loop Drive, Suite 4700
  Ames, IA  United States  50010-8664

  HDR Engineering

  4435 Main Street
  Suite 1000
  Kansas City, MO  United States  64111

  USDOT/OST-R

  Washington DC,   United States 
• Performing Organizations:

  University of Missouri, Columbia

  Department of Civil Engineering
  Columbia, MO  United States  65211
• Principal Investigators:

  Gopalaratnam, Vellore

• Start Date: 20131001
• Expected Completion Date: 20161231
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Admixtures; Bridge decks; Bridge design; Bridges; Concrete overlays; Lightweight concrete; Pavements; Reinforced concrete pavements
• Subject Areas: Bridges and other structures; Construction; Design; Highways; Materials; Pavements;

Filing Info

• Accession Number: 01579697
• Record Type: Research project
• Source Agency: Midwest Transportation Center
• Contract Numbers: DTRT13-G-UTC37
• Files: UTC, RIP
• Created Date: Oct 27 2015 10:37AM