ICT Shares Knowledge and Innovations

Effects of Wide-Base Tires on Pavement Damage

A research study conducted by ICT and sponsored by the Federal Highway Administration (FHWA) was the focus of a Transportation Research Board webinar on October 19, 2015. The study, “The Impact of Wide-Base Tires on Pavement Damage,” aims to assess the impact of new-generation wide-base tires (WBT) on pavements. 

Imad Al-Qadi, director of ICT and Founder Professor of Engineering in the Department of Civil and Environmental Engineering at the University of Illinois at Urbana-Champaign; and Jaime Hernandez, Ph.D. candidate in civil engineering at Illinois, led the presentation, which was moderated by FHWA highway research engineer Eric Weaver.

Al-Qadi and Hernandez presented a comprehensive approach for assessing the impact of WBT on pavement damage, including experimental measurements, numerical modeling, and development of prediction tools, and discussed life-cycle assessment of wide-base tires. The study’s methodology, results, and implementation (through suggested modifications to the AASHTOWare Pavement ME Design software) were also addressed.

The slides from the presentation are available for download here.

Mechanisms of Reflective Cracking in Rehabilitated Pavements

In an engaging and information-packed webinar organized by the Transportation Research Board Standing Committee on Pavement Rehabilitation, ICT director Imad Al-Qadi gave a presentation on the main mechanisms responsible for reflective cracking.

The webinar, “Mechanisms and Mitigation Strategies for Reflective Cracking in Rehabilitated Pavements,” was held August 24, 2015.

Also participating as webinar presenters were Mostafa El-Seifi, Louisiana State University; and James Greene, Florida Department of Transportation.

The presenters introduced several mechanisms for the initiation and propagation of reflective cracking; discussed several test methods, including the semi-circular bending test; and evaluated different mitigation strategies based on past research and evaluation studies.

The slides from the presentation are available for download here.

Concrete Pavement Innovation Workshop

The Illinois Department of Transportation (IDOT) District 1 office in Schaumburg was the setting for a well-attended and successful workshop on concrete pavement innovation and technology transfer. The workshop was held June 25; presentations and video from the workshop are available on ICT’s website.

The workshop was presented by the International Society for Concrete Pavements and was sponsored by IDOT, ICT, and the Illinois Chapter of the American Concrete Pavement Association. The objective of the workshop was to bring together IDOT engineers, county and municipal engineers, and consultants for training on the latest innovations in design, material, and construction technology related to concrete pavement.

Jeffery Roesler, ICT researcher and professor in the Department of Civil and Environmental Engineering at the University of Illinois at Urbana-Champaign, was one of seven presenters at the workshop. He spoke on the topic of concrete pavement overlay design and his recently completed ICT/IDOT study on the structural performance of ultra-thin whitetopping.

Other presenters and topics were the following:

  • Neeraj Buch, professor, Department of Civil and Environmental Engineering, Michigan State University, “Past, Present, and Future of the International Society for Concrete Pavements” and “Rapid Repair of Concrete Pavement with Precast Slabs”
  • Mark Snyder, engineering consultant, Pittsburgh, Pennsylvania, “Emerging Technologies for Concrete Pavement” and “Rapid Repair of Concrete Pavement with Precast Slabs”
  • Jake Hiller, associate professor, Michigan Technological University, “Recycle, Co-Product, and Waste Materials for Concrete Pavements”
  • Robert Rodden, executive director, International Society for Concrete Pavements, “Dowel Bars and Misalignment Tolerances”
  • Lev Khazanovich, professor, Department of Civil Engineering, University of Minnesota, “Design and Performance of Composite Pavements”
  • Corey Zollinger, pavement engineer, CEMEX, Houston, Texas, “Modern Roller-Compacted Concrete Pavement”