Minnesota Department of Transportation

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Research Pays Off Seminar Series

Orange barrels on a highway

Research Pays Off Seminar Series

Every 3rd Tuesday of the month 10:00 - 11:00 a.m. (CST)
Road Research will provide a monthly seminar* to highlight research topics that will make an impact on the work done here in the state of Minnesota and around the country.

2018 Upcoming Webinars

March 20--Recycled concrete aggregates in new concrete pavements, Farhad Reza, Professor
Department of Mechanical & Civil Engineering, Minnesota State University Mankato

Summary-- Conservation and reuse of resources are important aspects of sustainability. It is common practice in the US to crush old concrete pavements at the end of their service lives into recycled concrete aggregate (RCA) and then reuse them in the base course of new pavements. It is not, however, common to use the RCA in the new concrete pavement itself. This seminar examines the sustainability, and in particular, the economics of using RCA in the construction of new concrete pavements. Life cycle cost analyses were performed for various hypothetical pavement construction scenarios including RCA both in the base and in the concrete layer and compared with conventional options. If RCA is simply substituted for natural aggregate in a concrete mixture, the concrete is likely not to perform as well as a concrete made without RCA. This can be compensated for by decreasing the water-cement ratio and/or increasing the cement content. Despite this fact, the results of the life cycle cost analyses show that it can be very economical to use RCA in new concrete pavement construction. Since the natural aggregate used for concrete may be more expensive than the natural aggregate used for base courses, it may make good economic sense to substitute RCA for natural aggregate in concrete. Life cycle analysis also shows that concrete with RCA may have better environmental impact.

April 17--Chip Seal Program in Oregon, Ashley Buss, Iowa State University.

May 15--Development of Energy-, Cost-, and Environment-Based Life-Cycle Tool for In-Place Recycling Methods, Hasan Ozer, PhD and Imad Al-Qadi, Civil and Environmental Engineering Department
University of Illinois at Urbana-Champaign, Illinois Center for Transportation

Summary: The webinar will introduce the life-cycle assessment (LCA) tool developed for Federal Highway Administration (FHWA) to evaluate energy consumption and environmental impacts of in-place recycling techniques. The tool was developed consistent with the FHWA’s pavement LCA framework for the use of local and state highway agencies to make comparative assessment of in-place recycling techniques with their conventional alternatives. A comprehensive inventory database was developed through inventory modeling and data collection from contractors and agencies. The tool provides a user-friendly platform for state and local agencies to make life-cycle based decisions for selecting in-place recycling alternatives. Case studies will be presented to illustrate the potential use cases of the tool.

*To the best of our knowledge, this course/activity meets the continuing education requirements for PDHs as outlined in Minnesota Statute 326.107. More information concerning continuing education for professionals is available on the Minnesota Board of AELSLAGID website.​

2017 Archived Webinars


February 20--MnDOT’s use of the Paver Mounted Thermal Profile (PMTP) Method and Veta Software to Find Workmanship Issues in HMA Paving

Jan. 16--Pavement Preservation Panel Discussion

Dec. 19--Reclaimed Asphalt Pavement (RAP) in Pavement Preservation Applications with Don Matthews, TSD Manager Chief Engineer for Pavement Recycling Systems, Inc. in Jurupa Valley, CA.

Nov. 21-- Biomaterials and Biopolymers with Chris Williams, Gerald & Audrey Olson Professor of Civil Engineering and Director of the Asphalt Materials & Pavements Program, Iowa State University.

Oct. 17--Validated Intelligent Compaction (VIC) Testing at MnROAD and Engineering Data Analysis with David J. White, Ph.D., P.E. President and Chief Engineer, Ingios Geotechnics, Inc




Sept. 19--The Effects of Bio-Sealants or Rejuvenators on Asphalt Binder and Mixture Properties with Debaroti Ghosh, Research Engineer for MnDOT

July 18--Balanced Mix Design David Newcomb from the Materials and Pavement Division of Texas A&M Transportation Institute


Slide from Dave's Presentation with links to video of all the tests he mentioned.
Cracking Test Videos (Powerpoint)

May 16--Factors Affecting Asphalt Mix Durability (Video)
April 18 - National Road Research Alliance Long Range Research Plans (PDF)

March 21- Determination of Structural Value of Geogrid Reinforcement in Pavement Layers (video)
Feb. 21 - Barriers to Implementation of In-Place Recycling


2016 Webinar Archive

Automated Machine Guidance for Muck Excavation on CSAH 61/101

December 2016 - Jim Schneider, MnDOT, Presentation (PDF)

"Wide Based Tire" - Minnesota Pooled Fund Update

January 2016 - Shongtao Dai and Tim Anderson, MnDOT, Presentation (PDF)

Current Required Strengh of Concrete Roadways Before Opening to Traffic

February 2016 - Lev Khazanovich, University of Minnesota

Surface Textures and Their Effect on Vehicle Tracking

March 2016 - Bernard Izevbekhai, MnDOT
Presentation (PDF)

Development of Whitetopping Performance Curves

April 2016 - Tom Burnham, MnDOT
Presentation (PDF)

NCAT / MnROAD Project Update

May 2016 - Jerry Geib and Dave Van Deusen, MnDOT
Presentation - 2016 MnROAD Construction (PDF)
Presentation - NCAT and MnROAD Pavement Test Tracks (PDF)

Feasibility of Concrete Pavement Joint Condition Evaluation (A 2016 UMN-MnDOT Capstone Project)

June 2016 - Bernard Izevbekhai, MnDOT; Nathan Bausman, Kelsey Peterson and Brett Yanta, University of Minnesota
Presentation (PDF)

MnROAD Concrete Preservation

July 2016 - Tom Burnham, MnDOT
Presentation (PDF)

Subsurface Condition Evaluation for Asphalt Pavement Preservation Treatments (PPT)

August 2016 - Hyung Jun Ahn, MnDOT

Prescripton to Performance Initiative in Concrete (MnDOT's Journey)

September 2016 - Maria Masten, P.E.  MnDOT Concrete Engineer
Presentation (PDF)

Full-Coverage Nondestructive Asphalt Pavement Compaction Assessments using Ground Penetrating Radar Array-measured Dielectrics

October 2016 - Kyle Hoegh, MnDOT
Presentation (PDF)

Forensic Investigation of recycled unbound base and asphalt surface materials

November 2016 - Hyung Jun Ahn, MnDOT
Presentation (PDF)

2015 Webinar Archive

"Seminar Kick Off"

June 16th, 2015 - Speaker: Ben Worel, MnDOT
More Information (PDF)

Chip Seals - Use and Benefit to Minnesota

July 21st, 2015 - Speaker: Thomas Wood, MnDOT
More Information (PDF)

Results from the Minnesota Whitetopping Field Review throughout the State

August 18th, 2015 - Speaker: Tom Burnham, MnDOT
More Information (PDF)

Invention of the Aggregate Avoidance Method For Evaluating Interfacial Bond in Pavement Materials

September 15th, 2015 - Speaker: Bernard Izevbekhai, MnDOT
More Information (PDF)

Thermal Cracking and the Use of DCT Performance Testing

October 20th, 2015 - Speakers: Chelsea Hanson and John Garrity, MnDOT
More Information (PDF)

Rehabilitation of Interstate 394 in 2015:  Next Generation Concrete Surface

November 17th, 2015 - Speakers: Bernard Izevbekhai and Chris Kufner, MnDOT
More Information (PDF)

HMA Longitudinal Joint Construction Evaluation

December 15th, 2015 - Speakers: Ed Johnson and John Garrity, MnDOT
More Information (PDF)