RES2023-14: Improved Management Strategies of Processing Acid Producing Materials on Transportation Projects

Roadway excavation cuts in Tennessee frequently encounter rock, shale, or soil materials that could be considered acid producing material (APM). The geotechnical material properties of APM are adequate for roadway fill, but the APM produces acidic leachate that creates a condition of environmental pollution. Tennessee Department of Transportation (TDOT) has prepared a guidance manual in 2007 for dealing with these types of projects. TDOT routinely uses these design and construction protocols for proper handling of APM with APM processing strategies consist of blending with lime, relocating to landfills, or placement in engineered encapsulation cells on-site or off-site. These strategies, however, result in considerable increases in project costs and reductions in construction productivity, thus driving the need to assess current APM construction procedures to enhance the management of APM encountered in TDOT roadway projects with improved cost effectiveness and construction productivity.

• Record URL:
  https://www.tn.gov/content/dam/tn/tdot/long-range-planning/research/researchsummary/res2023/RES2023-14_One_Pager.pdf

Language

• English

Project

• Status: Active
• Funding: $200000
• Contract Numbers:

  RES2023-14

• 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:

  University of Tennessee, Knoxville

  Center for Transportation Research
  Conference Center Building
  Knoxville, TN  United States  37996-4133
• Principal Investigators:

  He, Quang

• Start Date: 20220801
• Expected Completion Date: 20250131
• Actual Completion Date: 0
• USDOT Program: Transportation, Planning, Research, and Development

Subject/Index Terms

• TRT Terms: Acids; Construction projects; Excavation; Leachate; Processing (Materials)
• Geographic Terms: Tennessee
• Subject Areas: Construction; Environment; Geotechnology; Highways; Planning and Forecasting;

Filing Info

• Accession Number: 01854603
• Record Type: Research project
• Source Agency: Tennessee Department of Transportation
• Contract Numbers: RES2023-14
• Files: RIP, STATEDOT
• Created Date: Aug 12 2022 2:16PM