Durability of Lightweight Concrete Bridge Decks

A primary benefit of using lightweight aggregate in concrete bridge deck construction is a reduction in dead loads that, in turn, reduces structural demands. However, anecdotal evidence from Utah Department of Transportation (UDOT) personnel suggests that bridges with these decks are deteriorating more quickly than similar bridges with decks constructed of normal weight concrete. The potentially reduced lifespan and/or increased need for maintenance resulting from more rapid deterioration constitute a significant cost. For this reason, an investigation of the durability of these decks is needed. The objectives of this research are to investigate the condition of several lightweight concrete bridge decks in Utah and, if possible, identify mechanisms that are causing premature deterioration.

Language

• English

Project

• Status: Active
• Funding: $40000
• Contract Numbers:

  23-9019

  UT20.403

• Sponsor Organizations:

  Utah Department of Transportation

  Research and Innovation Division
  Salt Lake City, UT  United States  84114
• Managing Organizations:

  Utah Department of Transportation

  Research and Innovation Division
  Salt Lake City, UT  United States  84114
• Project Managers:

  Stevens, David

• Performing Organizations:

  Brigham Young University

  Provo, UT  United States  84602-4081
• Principal Investigators:

  Guthrie, W

• Start Date: 20230324
• Expected Completion Date: 20240430
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Bridge decks; Concrete bridges; Deterioration; Durability; Lightweight aggregates; Lightweight concrete
• Geographic Terms: Utah
• Subject Areas: Bridges and other structures; Highways; Materials;

Filing Info

• Accession Number: 01896482
• Record Type: Research project
• Source Agency: Utah Department of Transportation
• Contract Numbers: 23-9019, UT20.403
• Files: RIP, STATEDOT
• Created Date: Oct 17 2023 6:43PM