RES2024-06: Early Age Concrete Acceptance

The design strength of traditional concrete is obtained at 28 days. However, there is an increasing need to predict design strength at earlier ages. Often, projects cannot wait to verify in place concrete has reached the desired strength, particularly with increased use of acceleration construction schedules. Presently, Tennessee Department of Transportation (TDOT) accepts the design strength of traditional concrete at 28 days and still bases acceptance and payment on 28-day cylinder breaks. However, TDOT is administering more early strength requirements in plans due to accelerated project delivery timelines. Therefore, TDOT needs to set early age acceptance criteria that can be used to approve early strength concrete at the age that it is intended to be in service. TDOT has standard (Classes) of mixes, it would be possible to determine calibration curves over a range of mixes and apply this range to field placement. If done properly, it may be possible to eliminate most destructive field cylinder testing.

• Record URL:
  https://www.tn.gov/content/dam/tn/tdot/long-range-planning/research/one-pagers-res-2024-projects/RES%202024-06.final.pdf
• Record URL:
  https://www.tn.gov/content/dam/tn/tdot/long-range-planning/research/final-reports/RES2024.06%20-%20Final%20Report%20Approved%20-%20Public.pdf

Language

• English

Project

• Status: Completed
• Funding: $129000
• Sponsor Organizations:

  Tennessee Department of Transportation

  James K. Polk Building
  Fifth and Deaderick Street
  Nashville, TN  United States  37243-0349
• Managing Organizations:

  Tennessee Department of Transportation

  James K. Polk Building
  Fifth and Deaderick Street
  Nashville, TN  United States  37243-0349
• Project Managers:

  Hampton, Chris

• Performing Organizations:

  Tennessee Technological University, Cookeville

  508 Bon Street
  Cookeville, TN  United States  37771-0000
• Principal Investigators:

  Mohr, Benjamin

• Start Date: 20230801
• Expected Completion Date: 20250731
• Actual Completion Date: 20240731

Subject/Index Terms

• TRT Terms: Acceptance tests; Calibration; Concrete curing; Construction projects
• Geographic Terms: Tennessee
• Subject Areas: Construction; Highways; Materials; Pavements;

Filing Info

• Accession Number: 01891050
• Record Type: Research project
• Source Agency: Tennessee Department of Transportation
• Files: RIP, STATEDOT
• Created Date: Aug 25 2023 2:44PM