The 103rd annual Illinois Transportation and Highway Engineering (THE) Conference was held at the University of Illinois at Urbana-Champaign February 28–March 1, 2017, at the Illini Union. With more than a thousand industry professionals in attendance, the two-day conference covered a wide variety of topics, including preparing roadways for autonomous vehicles, expansive cements for bridge construction, work zone safety and traffic management, and speed harmonization of local roads and streets.Read More
The University of Illinois at Urbana-Champaign hosted the International Pavement Life-Cycle Assessment Symposium on April 12–13, 2017 at the I-Hotel and Conference Center in Champaign, bringing together more than 130 academic and industrial leaders from around the world to discuss the current status and future developments related to the implementation of life-cycle assessment in pavements.Read More
An annual student-led event, the Engineering Open House (EOH) features exhibits and competitions that showcase the talent and ingenuity of engineering students at the University of Illinois. This year’s event, held on March 10-11, attracted more than 25,000 families, students, and community members who gathered to experience the atmosphere of innovation and creativity.Read More
The following reports from recently completed ICT projects are now available on our website …
R27-161: Construction and Performance Monitoring of Various Asphalt Mixes in Illinois: 2016 Interim Report. Five experimental projects were constructed to better determine the life-cycle cost and performance of pavement overlays using various levels of asphalt binder replacement (ABR) from use of reclaimed asphalt pavement, recycled asphalt shingles, and crushed concrete. The ABR varies from 15% to 48% in the experimental sections. The study of these projects prior to construction, during construction, and for a short monitoring period after construction is intended to determine the impact of various pavement conditions, pavement cross-section, mix design, and material properties on the ultimate performance of the hot-mix asphalt overlay. This second interim report documents the construction and initial testing of three of the five projects constructed in 2015. Also included in the report is an update on the performance of sections constructed in 2014 and the total recycle asphalt sections constructed in 2013. (The first interim report, published in February 2016, is available here.)
R27-169: Opportunistic Traffic Sensing Using Existing Video Sources (Phase II). The purpose of this study was to investigate methods for automatic traffic sensing using traffic surveillance cameras, red light cameras, and other permanent and pre-existing video sources. Success in this direction could potentially yield the ability to produce continuous, daily traffic counts where such video sources exist. The methods investigated come from the field of computer vision, including optical flow, background subtraction, and object detection and tracking, as well as control theory for fusing the results of these methods. The system developed as part of this project outperforms the state of the art in vehicle tracking, and it runs at faster frame rate. More work remains in improving robustness to occlusion and to improve accuracy of nighttime imagery.
Validation of Hot-Poured Crack Sealant Performance-Based Guidelines: Asphalt Crack Sealant Field Installation Guidelines. This report aims to guide pavement maintenance personnel in the selection, installation, and evaluation of materials for hot-poured crack sealant treatments for flexible pavements. The information provided in the guidelines is based on the field performance of 17 conventional sealants installed at five different sites in North America as part of the FHWA TPF-5 (225) pooled fund study: “Validation of Hot-Poured Crack Sealant Performance Based Guidelines”.
Validation of Hot-Poured Crack Sealant Performance-Based Guidelines. This report summarizes a comprehensive research effort made to validate thresholds for performance-based guidelines and grading system for hot-poured asphalt crack sealants. An extensive field performance study, incorporating a wide spectrum of commonly used sealants installed in eight test sites around the United States, was conducted, and the short-term and long-term aging effects of hot-poured crack sealants were evaluated. The research proposes new guidelines for full implementation as AASHTO specifications. In addition to the validated and revised thresholds of existing protocols, the research proposes a modified adhesion test and a simplified test for evaluating tracking resistance. Close inspection of the installation techniques and early performance feedback supported the development of a set of guidelines for crack sealant installation and application.
The Spring 2017 Kent Seminar Series has wrapped up another successful season. Students, researchers, and professional visitors presented on a variety of transportation topics. The lectures presented during the Spring 2017 semester were as follows:
- Shenghua Wu, Research Engineer, ICT: Impact of High Asphalt Binder Replacement on Performance for Overlay and Level Binder Mixes
- Roozbeh Dargazany, PhD, Assistant Professor, Michigan State University: Multi-Scale Modeling of the Tire–Pavement Interaction to Describe the Role of Pavement Micro-Texture on Sliding Rubber Friction
- Issam Qamhia, PhD Candidate, UIUC: Adequacy of In-place QC/QA Techniques for Evaluating Constructed Aggregate Layers of Working Platforms and Flexible Pavements
- Wouter Brink, Staff Civil Engineer, Applied Research Associates, Inc. (ARA): Evaluating Software Simulation of a Road Weather Information System
- Azadeh Akahavan, PhD Candidate, SIUE; and Goran Othmanawny, Graduate Research Assistant, SIUE: Performance Perspective in Selecting BMPs for Linear Projects (Akahavan) and Soaked and Unsoaked CBR Test Results on Unbound Aggregates with Varying Amounts of Fines and Dust Ratio (Othmanawny)
- K. Sharma, Senior Research Scientist, UIUC: Modeling the Performance Properties of RAS and RAP Blended Asphalt Mixes Through Chemical Compositional Information
- Thomas Papagiannakis, Professor, Civil Engineering, University of Texas at San Antonio: Micromechanical Modelling of Asphalt Concrete
- John Lambros, Professor, Aerospace Engineering, UIUC: Particulate Composite Material Internal Deformation Measurements Using X-ray Microtomography and Digital Volume Correlation
- Navneet Garg, FAA William J. Hughes Technical Center: Accelerated Pavement Testing for Airport Pavements and its Impact on Pavement Design for New Generation Aircraft
- Jamie Nelson, Center for Innovation in Teaching & Learning, UIUC: The Power of Presentations: Enhancing your Slides for Teaching and Engagement
- David K. Hein, PE, Vice President, Applied Research Associates, Inc.: Lessons Learned from the Design, Construction, and Maintenance of Permeable Pavements for Stormwater Management
The Kent Seminar Series will resume with the Fall 2017 semester. Information about upcoming lectures and the link to the live online broadcast to each presentation are available on ICT’s home page. The live broadcast link will appear below the scheduled seminar 30 minutes before its start time. Presentations begin at 12:30 p.m. every Thursday at ATREL during the academic year.
You can also see the complete archive of Kent Seminars, including videos of many past presentations.