RES2023-13: Chemical Stabilization of Pavement Subgrade

Roadway alignments are typically dictated by constraints other than the existing conditions. For reason, the design of the roadbed and pavement section must accommodate the conditions at each site even when poor, low strength soils are present in the subgrade. Tennessee Department of Transportation's (TDOT’s) current practice in these situations has been to either remove low quality materials or design a thicker pavement section, both at substantial cost to the state and its residents. Chemical stabilization is often a cost-effective alternative to either of these approaches and should be considered on more TDOT projects. TDOT’s usage and experience with stabilization has declined with time. In order to reverse this trend, TDOT needs to gain knowledge and experience with all aspects of the chemical stabilization process from exploratory and laboratory testing through design to construction.

• Record URL:
  https://www.tn.gov/content/dam/tn/tdot/long-range-planning/research/researchsummary/res2023/RES2023-13_One_Pager.pdf
• Record URL:
  https://www.tn.gov/content/dam/tn/tdot/research/final-reports/2023-final-reports-and-summaries/RES2023-13-Approved-Final-Report%20Approved.pdf

Language

• English

Project

• Status: Completed
• Funding: $170523
• Contract Numbers:

  RES2023-13

• 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
• Performing Organizations:

  Tennessee Tech University

  Department of Civil and Environmental Engineering
  1020 Stadium Drive Box.5015
  Cookeville, TN  United States  38505
• Principal Investigators:

  VandenBerge, Daniel R.

• Start Date: 20220801
• Expected Completion Date: 20230731
• Actual Completion Date: 20240731
• USDOT Program: Transportation, Planning, Research, and Development

Subject/Index Terms

• TRT Terms: Soil stabilization; Subgrade (Pavements)
• Identifier Terms: Tennessee Department of Transportation
• Subject Areas: Geotechnology; Highways; Materials; Pavements;

Filing Info

• Accession Number: 01854602
• Record Type: Research project
• Source Agency: Tennessee Department of Transportation
• Contract Numbers: RES2023-13
• Files: RIP, STATEDOT
• Created Date: Aug 12 2022 2:06PM