Development of Tennessee UHPC for Bridge Applications

Details

• Creators:
  Mohr, Benjamin J ; Maleque, Md Saeid Ebna ; Islam, M. Shariful ; Huff, Timothy ; Henderson, R Craig
• Corporate Creators:
  Tennessee Technological University
• Corporate Contributors:
  Tennessee. Department of Transportation ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  Concrete Bridges Concrete Construction Costs Local Materials Non-Proprietary Ultra High Performance Concrete Ultra High Performance Concrete
• Resource Type:
  Tech Report
• Geographical Coverage:
  Tennessee ; United States
• Corporate Publisher:
  Tennessee. Department of Transportation
• Abstract:
  Ultra-high performance concrete (UHPC) is known for its exceptionally high mechanical properties and enhanced durability performance. In Accelerated Bridge Construction (ABC), UHPC can be used for precast structural members as well as for bridge repairs, retrofitting and overlay construction. Densely compacted UHPC has a compressive strength of more than 17,500 psi at 28 days. However, commercially available, proprietary UHPC can be 10 to 20 times more expensive than conventional concrete, whereas non-proprietary UHPC costs around 5 to 10 times more than conventional concrete. The goal of this research is to develop and characterize non-proprietary, cost-efficient UHPC mixes with concrete materials available and/or sourced primarily from within the state of Tennessee. The primary objective was to develop self-consolidating UHPC that would provide a compressive strength of 4,000 psi at 8 hours and 18,000 psi at 28 days focusing on repair and traditional UHPC bridge applications. Due to the inability to achieve both compressive strength requirements for a single mix, two different UHPC mixes were developed based on intended application. The first is high early strength (HES) UHPC, which would provide 4,000 psi of compressive strength at 8 hours and the second is traditional UHPC providing a compressive strength of 18,000 psi at 28 days. In this research, UHPC was produced using ASTM Type IL cement, three types of fine aggregate sourced from different regions of Tennessee, two types of supplementary cementitious materials (silica fume and metakaolin), three types of admixtures (high range water reducer, accelerator, and strength enhancing admixture), and steel fibers depending on UHPC mix type and application.
• Format:
  PDF
• Funding:
  RES2024-04
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:3e37473ab3ede2312ad074c73f721078ec76d1486c41ad2a1b15ccfca4027b9fbd4ee694ea597d3ea95f825488687545171b7288b5bbdcc4388acac8db82a047
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/85819/dot_85819_DS1.pdf
• File Type:
  [PDF - 2.60 MB ]