View the full playlist of recorded webinars on our YouTube channel.
December 15, 2020: "Evaluation of Performance of MnDOT Unbonded Overlay Using Reliability Analysis" presented by Bernard I. Izevbekhai, P.E., Ph.D., MnDOT
Unbonded overlay (UBOL) is defined as consisting of a concrete pavement layer built over a stress-relief layer on an existing concrete pavement substrate. The plethora of UBOL section performance data in the Minnesota network was studied using Reliability (Weibull) Analysis, Stepwise Linear Regression, and the Kullback-Leibler Divergence. Reliability Analysis accentuated the typical failure mode, characteristic service life and preventive maintenance advantages. Stepwise Linear Regression isolated the statistically significant predictive indicators of service life while the Kullback Liebler divergence facilitated the comparison of performance curves. This research elucidated and validated unbonded overlay as a long-term fix.
November 17, 2020: “MnROAD’s Contribution Toward Improvements in Concrete Pavement Technology” by Tom Burnham, Senior Road Research Engineer, Minnesota DOT
Since 1994, the MnROAD facility has been unique in its broad focus on research related to all types of pavement. This has been particularly true for advancements in concrete pavement technology. In this presentation, the unique and significant MnROAD research findings that have improved concrete pavement technology not only in Minnesota, but throughout the U.S. and other parts of the world, will be highlighted.
October 20, 2020: "Introduction to Online Systems for Test Section Tracking at MnROAD" by Ben Worel and Steve Henrichs, MnDOT
September 15, 2020: 2020 Pavement Workshop Invited Speaker | "The Federal Highway Administration’s Turner-Fairbank Highway Research Center and Pavement Research" by Cheryl Richter, Ph.D., P.E. of FHWA
August 18, 2020: "Use of Road Doctor for Evaluation of Pavements Affected by Severe Crack-heaving (tenting)" by Eyoab Zegeye Teshal, Ph.D., P.E. of MnDOT
Pavement crack-heaving, also referred to as tenting, is a distress condition that primarily affects bituminous roads constructed in cold climates. This type of distress can stretch over long segments of roadways, and drastically impact the comfort and safety of drivers. Due to the complexities of the phenomenon and lack of established rapid testing tools, tenting issues are not yet well-understood and well-addressed. To help address the lack of adequate and rapid measuring tools for tenting, MnDOT experimented with its integrated and multi-sensor survey van (Road Doctor) and conducted extensive testing on District 1 highway roads suspected of tenting. The survey van was equipped with multiple linked and synchronized devices, including high-definition video and thermal cameras, LIDAR laser scanner, high-resolution accelerometer, and ground-penetrating radar (GPR) antennas. The data revealed important surface and subsurface pavement tenting characteristics and led to the development of test parameters that captured reasonably well the intensity and frequency of the tented cracks. This presentation will discuss the findings and the lesson learned.
July 21, 2020: 2020 Pavement Workshop Invited Speaker | Development of a Sustainable Procurement Roadmap using Life Cycle Assessment based Environmental Product Declarations by Amlan Mukherjee, Ph.D., P.E., associate professor, Michigan Technological University
June 16, 2020: Developing Best Practices for Rehabilitation of Concrete with Hot Mix Asphalt (HMA) Overlays Related to Density and Reflective Cracking by Eshan Dave, Ph.D. and Katie Haslett of University of New Hampshire
See the project page.
April 21, 2020: Performance Benefits of Fiber-Reinforced Thin Concrete Pavement and Overlays by Manik Barman, University of Minnesota - Duluth
See the project page.
March 17, 2020: Effective Concrete Partial Depth Joint Repairs in Challenging Conditions review by Heidi Olson of Braun Intertec
See the project page.
February 18, 2020: Evaluation of Long-Term Impacts of Early Opening of Concrete Pavements by Lev Khazanovich of University of Pittsburgh
See the project page.
January 21, 2020: Mix Rejuvenator Projects: Asphalt Spray-on Mix Rejuvenator Synthesis by Andrea Blanchette & Sheue Torng Lee of WSB; Asphalt Mix Rejuvenator Test Sections Construction Summary by Michael Vrtis of MnDOT
December 17, 2019: Ultrasonic Tomography for Concrete Pavement Investigations by Tom Burnham, MnDOT
November 19, 2019: Determining Pavement Design Criteria for Recycled Aggregate Base and Large Stone Subbase presented by Bora Cetin, Ph.D. for Iowa State University
See the project page.
October 15, 2019: Reduced Cementitious Material in Optimized Concrete Mixtures with Dr. Hamed Sadati of Iowa State University
See the project page.
July 16, 2019: Dustex with Steve Dickman and Lloyd Sundstol presented on a new product for base stabilization. Our presenters requested we also make the following packet of information about Dustex available.
June 18, 2019: Petrographic Laboratory Investigations of the Oldest Concrete Pavement in America presented by Gerard Moulzolf from American Engineering Testing
April 16, 2019: A Study of Diamond Grinding Performance in Texas with Feng Hong from the Texas Department of Transportation
March 19, 2019: Determining Pavement Design Criteria for Large Stone Subbase Materials with Bora Cetin, Assistant Professor in the Geotechnical and Geoenvironmental Engineering Area in the Department of Civil, Construction and Environmental Engineering at Iowa State University
February 19, 2019: Guide for Concrete Pavement Distress Assessments and Solutions by Dale S. Harrington, P.E., founding Director of the Portland Cement Concrete Pavement Technology Center at Iowa State University.
December 18, 2018: Mechanistic design of permeable pavements based on accelerated pavement testing with David R. Smith and Dave Jones, UC Davis Pavement Research Center.
November 20, 2018: The long-term research conducted by NRRA teams: Rigid, Flexible, Geotech, and Pavement Maintenance, was constructed in the summer and fall of 2017. Now these test cells are a year old and our principal investigators for each project talk about what we have learned so far.
Morning Session | Afternoon Session
October 16, 2018: Development of Energy-, Cost-, and Environment-Based Life-Cycle Tool for In-Place Recycling Methods with Professors Hasan Ozer and Imad Al-Qadi, University of Illinois at Urbana-Champaign.
Sept. 18, 2018: UAV and Close Range Photogrammetry (CRP) Studies for Transportation Infrastructure Surveys and Condition Assessment with Anand J. Puppala and Surya S. C. Congress, University of Texas Arlington
July 17, 2018: Tire Derived Aggregates with Monte Niemi, First State Tire
June 19, 2018: Panel Discussion of Rejuvenators with Amy Epps Martin, Texas A and M, Zachry Dept. of Civil Engineering and Matt Mueller, formerly with the Illinois DOT
April 17, 2018: Chip Seal Program in Oregon with Ashley Buss, Iowa State University.
March 20, 2018: Recycled Concrete Aggregates in New Concrete Pavements with Farhad Reza, Professor Department of Mechanical & Civil Engineering, Minnesota State University Mankato
February 20, 2018: MnDOT’s Use of the Paver Mounted Thermal Profile (PMTP) Method and Veta Software to Find Workmanship Issues in HMA Paving with Rebecca Embacher, Advanced Materials and Technology Engineer, MnDOT Office of Materials and Road Research
Jan. 16, 2018: Pavement Preservation Panel Discussion with Jerry Geib, Buzz Powell, and John Roberts
Dec. 19, 2017: 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, 2017: 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, 2017: 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, 2017: The Effects of Bio-Sealants or Rejuvenators on Asphalt Binder and Mixture Properties with Debaroti Ghosh, Research Engineer for MnDOT
July 18, 2017: Balanced Mix Design with David Newcomb from the Materials and Pavement Division of Texas A&M Transportation Institute, Cracking Test Videos (ppt)
May 16, 2017: Factors Affecting Asphalt Mix Durability
April 18, 2017: NRRA Long Range Research Plans (ppt)
March 21, 2017: Determination of Structural Value of Geogrid Reinforcement in Pavement Layers with John Siekmeier, P.E., M.ASCE
Feb. 21, 2017: Barriers to Implementation of In-Place Recycling
December 2016: Automated Machine Guidance for Muck Excavation on CSAH 61/101 (pdf) with Jim Schneider, MnDOT
November 2016: Forensic Investigation of Recycled Unbound Base and Asphalt Surface Materials (pdf) with Hyung Jun Ahn, MnDOT
October 2016: Full-Coverage Nondestructive Asphalt Pavement Compaction Assessments using Ground Penetrating Radar Array-measured Dielectrics (pdf) with Kyle Hoegh, MnDOT
September 2016: Prescription to Performance Initiative in Concrete (MnDOT's Journey) (pdf) with Maria Masten, P.E., MnDOT Concrete Engineer
August 2016: Subsurface Condition Evaluation for Asphalt Pavement Preservation Treatments with Hyung Jun Ahn, MnDOT
July 2016: MnROAD Concrete Preservation (pdf) with Tom Burnham, MnDOT
June 2016: Feasibility of Concrete Pavement Joint Condition Evaluation (A 2016 UMN-MnDOT Capstone Project) (pdf) with Bernard Izevbekhai, MnDOT; Nathan Bausman, Kelsey Peterson and Brett Yanta, University of Minnesota,
May 2016: NCAT / MnROAD Project Update with Jerry Geib and Dave Van Deusen, MnDOT
April 2016: Development of Whitetopping Performance Curves (pdf) with Tom Burnham, MnDOT
March 2016: Surface Textures and Their Effect on Vehicle Tracking (pdf) with Bernard Izevbekhai, MnDOT
February 2016: Current Required Strength of Concrete Roadways Before Opening to Traffic with Lev Khazanovich, University of Minnesota
January 2016: Wide Based Tire, a Minnesota Pooled Fund Update (pdf) with Shongtao Dai and Tim Anderson, MnDOT
December 15, 2015: HMA Longitudinal Joint Construction Evaluation (pdf) with Ed Johnson and John Garrity, MnDOT
November 17, 2015: Rehabilitation of Interstate 394 in 2015: Next Generation Concrete Surface (pdf) with Bernard Izevbekhai and Chris Kufner, MnDOT
October 20, 2015: Thermal Cracking and the Use of DCT Performance Testing (pdf) with Chelsea Hanson and John Garrity, MnDOT
September 15, 2015: Invention of the Aggregate Avoidance Method For Evaluating Interfacial Bond in Pavement Materials (pdf) with Bernard Izevbekhai, MnDOT
August 18, 2015: Results from the Minnesota Whitetopping Field Review throughout the State (pdf) with Tom Burnham, MnDOT
July 21, 2015: Chip Seals - Use and Benefit to Minnesota (pdf) with Thomas Wood, MnDOT
June 16, 2015: "Seminar Kick Off" (pdf) with Ben Worel, MnDOT