Tag Archives: research

New Project: Sustainable Application of Tire Derived Aggregate in Stormwater Infiltration/Treatment

The reuse of old tires that often end up in landfills has a significant environmental benefit. Tire derived aggregate (TDA), a waste product from automobile tires, can be used in stormwater treatment systems and has shown to be effective at retaining phosphate. However, TDA does not prevent the leaching of metals including zinc and copper.  

Developing media for stormwater infiltration/filtration that uses TDA in combination with materials that can capture metals has several advantages. It would prevent more pollutants from being released into Minnesota’s lakes and streams, save on landfill space and reduce stormwater management costs.

“The use of TDA has been proposed in the past for use in stormwater treatment.  However, local agencies aren’t very familiar with the product being used for this application and have concerns about its potential to contaminate groundwater resources,” said Mark Hansen, city engineer, City of Coon Rapids. “Initial research is showing positive benefits for the use of TDA as a component of the stormwater treatment process, while minimizing its impacts to groundwater.  Using TDA for this application provides a great opportunity to redirect old car tires from landfills and beneficially reuse them to assist in providing stormwater treatment.”

Objectives

  • Select blend materials identified in literature review and mix them in different ratios with TDA.
  • Measure the pollutant removal performance from runoff, leaching of zinc and copper from TDA, and infiltration capacity of each mix.
  • Analyze the observed values to choose the suitable blend material/ratio.
  • Perform lab batch tests to evaluate the potential leaching or removal of polyfluoroalkyl substances (PFAs) by TDA and the blends.
  • Determine impact of biofilms on the leaching of zinc and copper from the mix (Biofilms will be grown on an already defined mix of TDA with blend material).
  • Conduct outreach on project results and implications to management to key stakeholder groups.

Project Details

  • Estimated Start Date: 06/03/2022
  • Estimated Completion Date: 06/30/2025
  • Funding: Local Road Research Board
  • Principal Investigator: John Gulliver
  • Co-Principal Investigator: Meijun Cai
  • Technical Liaison:  Mark Hansen

Details of the research study work plan and timeline are subject to change.

To receive email updates about this project, visit the Local Road Research Board website to subscribe.

What We Do for You: 2022 CTS Impacts Report

“CTS cultivates improvements and innovation in transportation through research, engagement, and education.” This is our mission statement, refined last year as part of a strategic planning process with the CTS Executive Committee.

Our new 2022 Impacts Report illustrates what this mission looks like in practice—and what it means for you.

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Research Pays Off Webinar Series: Intelligent Compaction Technology as a Service and for Compliance

The National Road Research Alliance (NRRA) is hosting “Intelligent Compaction Technology as a Service and for Compliance – How ICT Research has led to the Removal of Technicians from Construction Sites in the UK” on July 19 at 10 a.m. CST, presented by Ruairi Charlesworth of Highway Data Systems.

Continue reading Research Pays Off Webinar Series: Intelligent Compaction Technology as a Service and for Compliance

Research Pays Off Webinar Series: Intelligent Compaction Technology as a Service and for Compliance

The National Road Research Alliance (NRRA) is hosting “Intelligent Compaction Technology as a Service and for Compliance – How ICT Research has led to the Removal of Technicians from Construction Sites in the UK” on March 15 at 10 a.m. CST, presented by Ruairi Charlesworth of Highway Data Systems.

Continue reading Research Pays Off Webinar Series: Intelligent Compaction Technology as a Service and for Compliance

Research Pays Off Webinar Series: Understanding and Improving Pavement Milling Operations

The National Road Research Alliance (NRRA) is hosting “Understanding and Improving Pavement Milling Operations” on January 18 at 10 a.m. CST, presented by Eshan Dave, University of New Hampshire.

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Research Pays Off Webinar Series: Improve Material Inputs into Mechanistic Design Properties for Reclaimed HMA Roadways 

The National Road Research Alliance (NRRA) is hosting “Improve Material Inputs into Mechanistic Design Properties for Reclaimed HMA Roadways ” on December 21 at 10 a.m. CST, presented by Bora Cetin, Bora Cetin.

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Research Pays Off Webinar Series: Improve Material Inputs into Mechanistic Design Properties for Reclaimed HMA Roadways

The National Road Research Alliance (NRRA) is hosting “Improve Material Inputs into Mechanistic Design Properties for Reclaimed HMA Roadways” on November 16 at 10 a.m. CST, presented by Bora Cetin, Michigan State University.

Continue reading Research Pays Off Webinar Series: Improve Material Inputs into Mechanistic Design Properties for Reclaimed HMA Roadways

Join us online for the CTS Research Conference

Register to join us at this year’s virtual CTS Transportation Research Conference on November 4!

The event will convene researchers and practitioners to explore the latest innovations in transportation research, implementation efforts, and engagement activities.

Highlights of this year’s event include:

  • An opening keynote by Jonathan Foley, executive director of Project Drawdown, titled “Achieving Drawdown: A Hopeful, Science-Based Plan to Stop Climate Change.” In the presentation, Foley will discuss Project Drawdown’s comprehensive framework for addressing climate change, including the transportation industry’s role in pivoting to a better, more sustainable world.
  • A panel discussion following Foley’s presentation focused on the intersection of transportation, sustainability, and climate change. Panelists will include Elise Harrington, assistant professor in the Humphrey School of Public Affairs, and Ashwat Narayanan, executive director of Our Streets Minneapolis.
  • An afternoon keynote presented by Andrew Wishnia, deputy assistant secretary for climate policy in the Office of the Assistant Secretary for Transportation Policy at the United States Department of Transportation.
  • Fifteen concurrent sessions on topics including health and equity in transportation, lessons learned from COVID-19, CAVs, safety, electrification, shared mobility, transit impacts, and more.

The cost to attend is $75, which includes access to recordings of all conference sessions following the event. Registration information and a complete program are available on the conference web page.

Research Pays Off Webinar Series: Developing Best Practices for Rehabilitation of Concrete with Hot Mix Asphalt (HMA) Overlays Related to Density and Reflective Cracking

The National Road Research Alliance (NRRA) is hosting “Developing Best Practices for Rehabilitation of Concrete with Hot Mix Asphalt (HMA) Overlays Related to Density and Reflective Cracking” on October 19 at 10 a.m. CST, presented by by Eshan Dave and Katie Haslett, University of New Hampshire.

Continue reading Research Pays Off Webinar Series: Developing Best Practices for Rehabilitation of Concrete with Hot Mix Asphalt (HMA) Overlays Related to Density and Reflective Cracking