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TRB 2007

TRB 2007. Transportation Students’ Observations. Students from UIUC at poster session:. Experience at TRB 2007. Darwin Schafer Advisor : Chris Barkan Graduate Student in Railroad Engineering.

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TRB 2007

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  1. TRB 2007 Transportation Students’ Observations

  2. Students from UIUC at poster session:

  3. Experience at TRB 2007 Darwin Schafer Advisor: Chris Barkan Graduate Student in Railroad Engineering The most interesting talk I heard at TRB was in a paper session on Wednesday morning titled “Integrated Logistics Centers: Realizing the Potential”. This session was focused on logistic centers involving multiple modes of transportation into one site. The presenters described three case studies followed by the last presenter describing how his firm assists in creating logistic centers for communities. The third presentation, by John Greuling from the Will County Center for Economic Development, described in detail the creation and operation of the Logistic Park Chicago (LPC). The presentation on LPC was amazing. The logistic park was created due to the need for more intermodal yards in the Chicagoland area (also know as the Inland Empire). BNSF committed to the idea, and is know in full use of an intermodal terminal that has multiple tracks of 8000ft and operated by 11 cranes. Currently the production is 1.6 million lifts per year, but will increase this year to over 2 million. Because of this large volume of intermodal containers, the trucking industry is huge in the area. Walmart has committed to building over 5 million square feet of distribution centers and has already constructed over 3 million square feet to date. The size of this logistic park was overwhelming to me. But on top of that, the park is still expanding rapidly and will continue to do so as the Inland Empire grows.

  4. The event that interested me the most was, Session 602: Airport and Aircraft Compatibility Challenges and Opportunities during the next 20 years With the CEAT center at U of I and airport pavement related research being conducted by my advisor Prof. Tutumluer, this lecture was of particular interest to me. Also, as a student of the course CEE 407 (Airport Facilities Design) I was specially interested by the topic of this session This session addressed the challenges in front of airport designers as the new generation of aircrafts like the Boeing 787 Dreamliner and Airbus A-380 are approaching The Session started with a brief overview of the growth of aviation industry The second lecture by Mr. William A Fife explained how unprepared most airports are to accommodate the future aircrafts. He addressed aspects like electric supply at terminals, that are commonly overlooked by airport designers The lecture by Mr. David J. Nielson from Boeing addressed different aspects of several Boeing aircrafts. Getting to know the different gear configurations and capacities of different aircrafts helped me get a better idea about the challenges in front of an airport designer Apart from this I was impressed by several other sessions and posters during the TRB meeting Experience at 86th Annual TRB Meeting - Debakanta Mishra

  5. TRB 2007 I have been the member of committee AR030, Railroad Operating Technologies, since 2004 and actively participated in this committee. In our committee meeting this year, I volunteered to be the next secretary of AR030 after the current secretary Bob Leilich, an experienced railway consultant, who has been the secretary of AR030 for more than a decade decided to step down. I am really happy with the committee’s openness to young people and look forward to contributing for this committee. Yung-Cheng Lai UIN: 653377280

  6. TRB 86th Annual Meeting • …This year’s TRB was particularly useful for me since I was finally able to conclude that the success in the field of pavement engineering comes directly from the right combination of field work, experiments and modeling of pavement behavior. …If somebody would like to be the leader in this area, then he/she definitely needs to have a perspective in all aforementioned topics. Otherwise, the research or field work cannot be realistic. by Onur Pekcan

  7. Transportation Research Board 86th Annual Meeting (January 21 - 25, 2007 in Washington) Seongkwan Mark Lee Ph.D. Student Department of Civil and Environmental Engineering Short Review of Joining in the Meeting At the meeting, I presented a paper which was titled as “Effects of Median Barriers on Accident Rates in South Korea” as a second author. Within the paper, I described how much the median barriers could decrease fatal accidents such as head-on crashes. During the session I could contact many professional persons, for example, “Roya Amjadi” (Engineer, Ohio Department Of Transportation), “Judy Geyer” (Research associate, University of California Berkeley), “Mark K. Ricci” (Chairman, Brotherhood of Locomotive Engineers and Tranmen), and “Paul f. Hanley” (Assistant professor, University of Iowa). They were interested in the way how I achieved a statistical analysis and a before & after study to support the propriety of the median barrier installation. The sessions (session 732; Roadside Safety, session 708; Performance of Roadside Safety Features) which I joined in during the meeting were related to the transportation safety, because I was interested in Highway Safety Issues including both hardware and software.

  8. TRB 86th Annual Meeting Jayhyun Kwon • TRB sessions addressing my research interests • Hospitality hosted by project sponsor • Present my current research project • Meet potential coworkers and learn the working environment • KOTAA (Korean Transportation Association in America) meeting • Opportunity to meet Korean and Korean-American university faculties and graduate students • UIUC alumni meeting • Opportunity to meet transportation industry professionals graduated from University of Illinois

  9. Revolution in Transportation Transportation Energy Committee and TRB Committee on Alternative Transportation Fuels are merged by Transportation Research Board. They are the only two committees which were forced to unite due to budgetary constraints. I attended both committee meetings and there was a strong opposition for merger in the energy committee (carbon fuel). This is one of the symptoms that indicates means of transportation is expecting a great deal of change. Besides President Bush’s remarks on ethanol and alternative fuel research and usage in his speech show a hint about where the research is going to be headed in the next 10-15 years. Submitted by: Umit Deniz Tursun

  10. TRB 86th Annual Meeting-AttendanceReport - Joseph Anochie-Boateng • General • Learn new research developments related to transportation facilities engineering. • Acquired more knowledge in other pavement engineering research not related to my area of concentration (soils and granular materials). • Interesting sections attended • Influence of Aggregate Properties on Performance of Geosynthetics. • Overlay Treatments of Existing Portland Cement Concrete Pavements. • Assessment of Maintenance Treatments via Accelerated Pavement Testing. • Conclusion • Had opportunity to meet with authors, talked with exhibitors, and meet with professionals in transportation research. • Grateful to CEE department and sponsors of my participation.

  11. TRB Experience Hector Figueroa • I really enjoy the TRB, I have never imagined something like it. • Everything for me was beneficial the sessions, the committees, posters, etc. • But the most interesting part was the committees, because they discussed real problems and solutions. I assisted at the Pavement Maintenance Committee.

  12. TRB Summary • Attend two committee and the interesting discussions were summary as following • Sealants and Fillers for Joints and Cracks Committee (AHD25) • Colorado DOT establish a research about how (MgCl2), which is a typical anti-freeze agent, affects the sealant performance. • Texas DOT finish a sealant field performance project and is available online now • MnDOT now installed 18 sealants in 23 sites to study the long term performance for sealant • CaTran now establish a Pavement Preservation Technical Transfer (PPTT) program • Pavement Maintenance Committee (AHD20) • The focus topic now is cost-effectiveness of maintenance technique (how to quantify the benefit and how to transfer the benefit into economical value) • CaTran pavement preservation center (Shakir) is now Developing a performance specification on cheap seal and 5-year project for quantify the benefit from different pavement preservation technique • Three key studies in TTI: • Thin overlay • Crack sealant material • Cheap seal training • One paper present at Performance-Based Specification Development for Joint and Crack Sealant Shih-Hsien Yang

  13. 86th TRB Summary As a new attendee, I felt shocked by such a grand meeting in transportation field. There were so many sessions and events every day with so many people from academy, industry and government attending. Therefore, I felt confused about which session to attend. Meanwhile, I felt so lucky that I have chosen such a promising field to work in. Under my advisor’s instruction, I chose to attend the sessions that are relevant to my research. On 01/22, pavement management poster and railway maintenance committee meeting. On 01/23, transportation network models session, transportation network modeling committee meeting, transit management and allocation of resources poster and network equilibrium models session. On 01/24, freight models session, freight systems poster and transportation network modeling. I have gained better understanding of what is going on in transportation field through this meeting. I have found that my knowledge about this field is so limited that there are a lot for me to learn. I feel interested and motivated to learn them. Besides, I have learned something about how to do a good presentation. I think that it is important for me to improve my presentation skill if I want to work in academy in the future. I hope that I can do a good presentation about my current research on infrastructure management in the next TRB annual meeting. 1/30/2007 Yan Jiang

  14. My feeling Interesting topics to me • Management • Pavement rehabilitation-DP. • Bus maintenance- Similar to machine replacement problem. • Traffic Flow • Stochastic modeling at signal intersection-Delay, queue modeling. • Road network analysis. • Traffic assignment and forecast. • Logistics • Truck size problem-Dispatch problem • Supply Chain • Reversed supply chain- Reflecting industrial reality. • A good experience to widen our knowledge, especially for a freshman like me. • A good platform to know recent research focuses related to transportation. • A good opportunity to communicate with others of our major. • A Strong inspiration for our future research. • A live lesson about representation. Xiaopeng Li Advisor: Yanfeng Ouyang

  15. 86th TRB Experience • I attended a workshop for asphalt mixture issue on Sunday. The purpose of workshop was the open discussion with practical people but it helped each other. • I made a presentation in the first session on Monday. The topic was “FE fracture modeling of airfield overlay system”. It was a great experience to speak with other people who are interested in our research area. • During the conference, I attended several sessions that I interested in. • I really appreciate for the travel support from our transportation division and professors. Hyunwook Kim

  16. TRB 2007 - Cristian Gaedicke Main Activities: • Paper plus presentation: Fracture Mechanics Analysis for Saw Cutting Requirements of Concrete Pavements • Paper: Fracture Behavior of Functionally Graded Concrete Materials for Rigid Pavements Other Activities: • ISCP meeting • Sessions • Social activities

  17. Experiences at TRB 86th Annual Meeting Minkwan Kim • Presented a paper (07-1827) • AFD80 (Advanced Approaches to Interpreting Pavement Deflection Data) on Wednesday • Attended Sessions • 389 on Monday • 508, 531 on Tuesday • 723 on Wednesday • Attended Committee Meetings • Flexible Pavement Design Committee on Tuesday • Attended Meetings • Univ. of Illinois Alumni Meeting on Tuesday • Kotaa Meeting on Tuesday

  18. Attending my first TRB conference was a dream come true as a young professional because ever since my undergraduate class in Uganda, professors often referred to it as a get together forum for sharing knowledge, experience and networking with the world’s best in various fields. Given the opportunity I had to. At the conference I attended both poster and session presentations on traffic modeling in Marriott and Hilton hotels. I found poster presentations more interesting because you had time to ask questions. I was fascinated by the level of application of simulation in Traffic modeling. Almost all presentations were based on simulation principles. I was also able to buy at a low price three journals relevant to my research interest: Transportation Network Modeling, 2001; Passenger Travel Demand Forecasting, Planning Applications, and Statewide Multimodal Planning, No 1777; and Geometric Design and the Effects on Traffic Operations, 2001. Godfrey Mwesige, Graduate Student Masters (Transportation Systems Engineering) B106 Newmark Civil Engineering Laboratory

  19. Phillip Donovan: Lessons Learned From TRB • 1) The most important thing I learned was that networking and talking with colleagues can provide an immediate solution to research problems. • -- Rangan was able to look at my NAPTF graphs and show me my errors. • -- With my newfound knowledge I easily graphed the surface response of the CC1 testing cycle. And I can now find out the actual response of the other sensors. MFC section of the NAPTF • 2) Using geogrid to reinforce base course (blatant plug for paying attention to what happens at ATREL) • -- Geogrid interlocking with the aggregate to prevent lateral deformation provides the support. Interlocking zone of influence is about 10”. • -- Placement in the upper 1/3 is best location for geogrid in single layer application • -- Geogrid does not help with initial shakedown deformation because most deformation is densification • -- Did not reduce resilient strains (as expected) • 3) Use of ultrathin bonded wearing course as a concrete overlay • -- worked well in pavements 30-50 yrs old - did a good job of extending life • -- my own view - suspect it worked well because original pavement system was so stable and the reduction in water infiltration allowed the system to gain back some of the strength it had lost. • 4) Hot applied patching materials • -- 20-25% binder • -- Similar to hot glue, when it cools its ready – essentially a thermoplastic • -- Difference between conventional • -- stronger than cold patch • -- more flexible than two part epoxy (VERY important for airfield repairs)

  20. TRB 86th Annual Meeting Highlights Shihui Shen Poster Sessions Presentation Sessions Committee Meetings U. of I Reception Meeting Old Friends and Different People

  21. Experience of the 86th TRB Annual MeetingJongeun Baek • Conference or Meeting? • The first opportunity to make me feel as meeting as well as conference • To meet lots of people and advertise myself • To try to be a member so far • Meetings: • 2007 Annual Meeting of the ISAP TC as for WG04 • AFD70 Pavement Rehabilitation Committee to apply a member • Univ. of Illinois Alumni Meeting as a volunteer to help • Korean Transportation Association in America Meeting to get in a network for academic position

  22. WHY IT WAS GOOD? There are a lot of people from the academy and the field from all around the world, and you can exchange experiences and knowledge. Jan 20th – Jan 25th. Sara del Pilar Alzate D. WHAT WAS REALLY INTERESTING? The called Forensic Engineering is applying newly NDE and DE technology trying to don’t fall in the mistakes made in the past. This helps to understand the relations between some events and the previous elements as construction process, materials, design, etc. WHAT WAS NICE? The presentations of the members of UIUC were outstanding, you can feel proud of being represented by them and make part of this community. WHAT TO DO IN NEXT TRB OR SIMILAR? Make contacts and try to think in research possibilities. It is a good idea to start business or find partners.

  23. Juan Medina TRB 2007 TRB 2007 was very exciting. Besides the committees and sessions, which are always interesting, it is also nice to meet with old friends and make some new ones. It was particularly interesting to know that some friends already working in the transportation industry (some in small private companies) were sponsored by their companies to attend TRB, and they are also encouraged to participate in other technical events too. This shows that even small private companies are interested and actively participating in academic conferences. Thus, in addition to having a good time and learning from their experiences, I also had the chance to meet people from the industry and make important contacts in the transportation area, making the experience even more productive.

  24. TRB Annual Meeting-January 2007Jarice D. RodriguezEmail: jdrorig@uiuc.edu • At the TRB Annual Meeting I did have the opportunity to attend those sessions related to my research area. The most useful sessions for me were the Capacity and Level of Service for Signalized Intersections (448) and Priority, Preemption, and Transition in Traffic Signal Control (451). During these sessions I had the opportunity to see what have been done in my area. Also, I had the chance to interact with researchers from around the world. I started a research network for future research collaboration, particularly with researches from Latin America. • Some of the sessions that I attended are the following: • Freeway Operations (337) • Application of Spatial Techniques in Highway Capacity Analysis (447) • Capacity and Level of Service for Signalized Intersections (448) • Priority, Preemption, and Transition in Traffic Signal Control (451) • Driver Simulation and Transportation Visualization Research (453) • Strategic Network and Tactical Intersection Control (454) • Driver Behavior at Intersections (535); • Speed Management, Intersection Enforcement and Highway Safety Corridor Research (536) • Traffic Control Device Research, 2007 (540) • User Information and Advanced Traveler Information Systems (541) • Understanding Traffic Signal Dilemma-Zone Control (506)

  25. TRB 2007 (Zhen Leng) • Sessions and Committees: • Strength and Deformation Characteristics of Pavement Sections Committee(AFD80) • Full-Scale and Accelerated Pavement Testing Committee (AFD40) • Pavement Rehabilitation Committee(AFD70) • Best Practice for Joint and Crack Sealing • Accelerated Pavement Testing, Part 1 • Overlay Treatments of Existing Portland Cement Concrete Pavements • Assessment of Pavement Maintenance and Rehabilitation Techniques • Posters: • Session 529 (Binder Characterization), Session 530 (Asphalt Mixture Design, Analysis, and Evaluation), Session 531 (Asphalt Mixture Modeling and Testing), Session 532 (Asphalt Mixture: Effects of Nonbituminous Components on Performance), Session 534 (Characterizing Hot-Mix Asphalt) • Besides,by attending several receptions including those of UIUC, Greece and Dynatest, I got to know more people in transportation engineering from all over the world.

  26. Summary of Activities at the 86th Annual Meeting of Transportation Research Board (TRB) • The purpose of the trip is to participate in the 86th Annual Meeting of • the Transportation Research Board (TRB), in particular, the meeting of Railway Maintenance Committee on Monday, January 22, in which the work entitled ‘Optimal Location of Railroad Wayside Defect Detection Installations’ by Ouyang et al. is presented to the Committee. • Aside from the above, the benefits gained by participating in the Meeting include: • obtain new knowledge on the subjects of interest, which is useful for the research and helps broaden knowledge from classes, • learn the recent advancement in transportation technology, analyses tools and techniques related to transportation researches, • have a chance to practice communication skills (presentation) at the meeting of professionals in the field of transportation, • establish the connections with other students, researchers, academics and transportation professional from various institutions that will benefit the future career. Athaphon Kawprasert

  27. TRB 86th Annual Meeting - 2007 • My most interesting experience at this year’s TRB Annual Meeting was at Workshop 151 on Sunday afternoon • “Integrated Materials and Construction Practices for Durable Concrete Pavements” • The CP Tech Center at Iowa State University put together a good summary on concrete materials for use in pavement applications • Excellent for use in an undergraduate concrete materials course Prepared by: Jake Hiller

  28. Summary of Activities in the 86th Annual Meeting of the Transportation Research Board (TRB) January 21 – 25, 2007 Washington, D.C. Athaphon Kawprasert (Kwan) The purpose of the trip is to participate in the 86th Annual Meeting of the Transportation Research Board (TRB), in particular, the meeting of Railway Maintenance Committee on Monday, January 22, in which the work entitled “Optimal Location of Railroad Wayside Defect Detection Installations” by Ouyang et al. is presented to the Committee. Additionally, the benefits gained by participating in the Meeting include: 1) obtaining new knowledge on the subjects of interest, which is useful for the research and helps broaden knowledge from classes, 2) learning the recent advancement in transportation technology, analyses tools and techniques related to transportation research, 3) having a chance to practice communication skills (presentation) at the meeting of professionals in the field of transportation, 4) establishing the connections with other students, researchers, academics and transportation professionals from various institutions that will benefit the future career.

  29. Interesting Experiences in TRB 2007Seungmo Kang, Ph.D Candidate, CEE, UIUC • Poster presentation • Title: Optimal Planning and Management of Transportation Fleet at Container Ports • Session: 653. Freight Systems and Marine Groups: Meet the Author • Session attended • 543. Freight Transportation and Logistics and Trucking Research: Meet the author • 492. Transportation Network Models • 456. Current Research on Critical Transportation Infrastructure Protection • 379. Semantic Data Models: Building a Foundation for Data Sharing • and more • Meetings • KOTAA (Korean Transportation Association in America) 2007 Annual Meeting, (January, 23) • University of Illinois, Civil and Environmental Engineering alumni reunion (January, 23)

  30. An interesting experience at T.R.B. It was the first time I had attended such a prestigious conference. Visiting all the scholars in the transportation engineering and facility for me was an interesting experience. In addition, I understood how one should present his/her works in such a conference. I attended some sessions and committees which were so interesting to me specially the one about work zones. Ali Hajbabaie

  31. TRB 656Effects of motorcycle management strategies on external costs • It was a poster presentation from my home country Taiwan. The motorcycle usage ratio is pretty high in Taiwan. • Some policies of motorcycle management are compared, using full cost model of motorcycle trips. • External cost such as noise and congestion are high. • It shows that fatality rate of motorcycle is highest compared with other transportations. • The conclusion is that the more strict motorcycle management policies will obtain more positive achievement. • This presentation really helps me figure out the situation and the backgrounds in Taiwan. • And I feel the development of public transportation will have an important place in the future years. Yu-Ching Lee Yu-Ching Lee Yu-Ching Lee

  32. Experience @ 86th TRB Annual Meeting • One of the main issues raised within the committee of hazardous materials transportation this year is the dilemma in prioritizing efforts to reduce safety versus security risks • For the tank car community, one argument is that there is no economically feasible design to withstand intentional attack on tank cars • One consensus was that the inflow of security-related bills has benefited the improvement in safety-related issues • Over focusing on security e.g. high-tech investments to monitor yard trespassing may however displace a large amount of fund for better reducing both safety and security risks • Joint discussion between industry players, the FRA and TSA is crucial to maintain the balance Safety vs. Security Risks in Hazardous Materials Transportation mohdsaat@uiuc.edu

  33. TRB 86th Annual Meeting Hai Huang U. of I Reception Greece Party Sit in Railroad Maintenance Committee meeting Presentations (Aggregate Characteristics) Southeast University Reception

  34. Interesting Experiences at TRB 2007Matthew Beyer (advisor: Dr. Jeff Roesler) • Had dinner with Dan Zollinger of Texas A&M, a frequently cited author in papers regarding saw-cutting • Shook hands with Senator Barack Obama while visiting his offices on Capitol Hill

  35. 2007 TRB Activities – Hao Wang • My presentations: • Profiler Performance Evaluation and Accuracy Criteria Analysis (AFD 90 committee meeting) • Investigation of Seasonal and Multi-year Variations of Pavement Surface Characteristics at the Virginia Smart Road (Session 332 ) • Sessions • Poster session 530 Asphalt Mixture Design, Analysis, and Evaluation • Session 677 Flexible Pavement Design Modeling • Committee meetings • AFD 90 Surface Properties - Vehicle Interaction Committee • AFD 40 Full-Scale and Accelerated Pavement Testing Committee • AFK 50 Characteristics of Bituminous Paving Mixtures to Meet Structural Requirements Committee • Reception • Southeast University Alumni Dinner • Greece reception • UIU reception

  36. TRB 2007 Annual Conference • Unique combination of industry, government, and academic researchers • Broad range of subjects enables interdisciplinary “sampling” • Networking, networking, networking • Committee meetings help show what areas of future research might be useful & productive • Technical contacts • Job opportunities Dan Peltier

  37. TRB 2007 Overview I. Committee Meetings • Divide my time to visit mainly HMA modeling, testing and characterization sessions and committee meetings, and airfield pavement sessions • Committee meetings • Flexible pavement design(AFD60), HMA modeling (AFK50) • Podium sessions • Airfield design, HMA mixture design • Poster sessions • HMA characterization and modeling II. & III. Podium and Poster Sessions • AFD60-Flexible Pavement Design Committee • Existing and potential research ideas • One young member needed !!! • AFK50 (2)-Integration of Bit. Paving Mixture Characteristics with Pavement • A new subcommittee • Can establish link between practitioners’ needs and researchers • Mission and scope of the committee had been discussed • Asphalt mixture modeling and testing • Some of the interesting posters are about • Micromechanical approaches in HMA modeling • Low temperature cracking models • Resilient modulus from dynamic modulus tests • Characterization of HMA • Flexible Pavement Modeling • ME Top-down cracking model (Roque et al.) • Asphalt Mixture Design Considerations • Volumetric and rutting props. of CRM by triaxial setup • Modeling of tertiary flow for HMA (Frankce’s exponential model adopted)

  38. 2007 Transportation Research Board Annual Meeting Participation Experience Name: Ming-Heng Wang Date: 01/22/2007 – 01/24/2007 Experiences: The main purpose for me to attend the TRB meeting this year is to present (poster) my paper, which is “Arrival-based uniform delay model for exclusive protected-permitted left turn lane at signalized intersections” at section 448 on Tuesday (23rd). During the poster, I was so impressive that many attendants paid attention to my paper and discussed with me. I also get some useful information from discussions, such as Next Generation simulation data base which can provide users to calibrate and validate the simulation program. Besides, I also attended some interested sections, such as network control using ITS, work zone speed control and signal dilemma zone.

  39. Andrew Braham’s 2007 Trip to TRB • I drove to Washington DC with Eshan Dave and Mike Wagoner • Stayed at the Days Inn with Mike • Went to TRB committee meeting AFK20 (committee member) and AFK50 (committee friend) • Pitched the idea for a PhD research workshop next year at each committee meeting, and each committee’s approved their participation • Made a poster presentation (see picture) for paper to be published in TRR in 2007 • Went to several other technical presentations, and the UIUC alumni hospitality suite.

  40. Workshop 102, Advanced Models for Asphalt Pavement Mixtures and Pavements: What Are They Good for? Sealants and Fillers for Joints and Cracks Committee (AHD25 ) Pavement Maintenance Committee (AHD20 ) Poster Session 529 (Binder Characterization) Deformation and Tracking of Bituminous Sealants in Summer Temperatures: Pseudo-Field Behavior (07-1534) Repeatability and Reproducibility of the Newly Developed Hot-Poured Bituminous Sealant Viscosity Test (07-2789) TRB 2007 Sessions/Committees Presentations I also attended several universities’ gathering including that of UIUC, in which I got to know new people in our field

  41. Workshop 102, Advanced Models for Asphalt Pavement Mixtures and Pavements: What Are They Good for? Sealants and Fillers for Joints and Cracks Committee (AHD25 ) Pavement Maintenance Committee (AHD20 ) Poster Session 529 (Binder Characterization) Deformation and Tracking of Bituminous Sealants in Summer Temperatures: Pseudo-Field Behavior (07-1534) Repeatability and Reproducibility of the Newly Developed Hot-Poured Bituminous Sealant Viscosity Test (07-2789) TRB 2007 Sessions/Committees Presentations I also attended several universities’ gathering including that of UIUC, in which I got to know new people in our field

  42. TRB 86th Annual Meeting – Alex Apeagyei • Objective • To meet and network with top class transportation professionals from around the world • Get state-of-art knowledge on pavement engineering • Interesting sessions attended • Mechanics of Reflective Cracking and Abatement Approaches • Modified Asphalt Binders • Recycled Materials in Hot-Mix Asphalt: Understanding Effects on Performance • Acknowledgement • Grateful to the CEE Department for their support

  43. Donovan Lessons Learned From TRB • 1) The most important thing I learned was that networking and talking with colleagues can provide an immediate solution to research problems. • -- Rangan was able to look at my NAPTF graphs and show me my errors. • -- With my newfound knowledge I easily graphed the surface response of the CC1 testing cycle. And I can now find out the actual response of the other sensors. MFC section of the NAPTF • 2) Using geogrid to reinforce base course (blatant plug for paying attention to what happens at ATREL) • -- Geogrid interlocking with the aggregate to prevent lateral deformation provides the support. Interlocking zone of influence is about 10”. • -- Placement in the upper 1/3 is best location for geogrid in single layer application • -- Geogrid does not help with initial shakedown deformation because most deformation is densification • -- Did not reduce resilient strains (as expected) • 3) Use of ultrathin bonded wearing course as a concrete overlay • -- worked well in pavements 30-50 yrs old - did a good job of extending life • -- my own view - suspect it worked well because original pavement system was so stable and the reduction in water infiltration allowed the system to gain back some of the strength it had lost. • 4) Hot applied patching materials • -- 20-25% binder • -- Similar to hot glue, when it cools its ready – essentially a thermoplastic • -- Difference between conventional • -- stronger than cold patch • -- more flexible than two part epoxy (VERY important for airfield repairs)

  44. TRB2007 An opportunity to: • attend more then 3000 technical presentations • meet with people in field of transportation (US and International) • participate in TRB committees • meet alumni from University of Illinois at the alumni reception I attended and participated in following: • Podium Sessions: • 207: Mechanics of Reflective Cracking and Abatement Approaches • 461: Analysis Methods for Pavement Subsurface Drainage • 502: Recycled Materials in Hot-Mix Asphalt: understanding Effects on Performance • Poster Sessions: • 529: Asphalt Binder Characterization • 530: Asphalt Mixture Design, Analysis, and Evaluation • 531: Asphalt Mixture Modeling and Testing • 534: Characterizing Hot-Mix Asphalt • Committee Meetings: • AFK40 • AFK50(1) • AFK10 • AFK30 • AFK50 Eshan Dave

  45. TRB 86th Annual Meeting Minute by Yoo, Pyeong Jun Mechanics of Reflective Cracking and Abatement Approaches: Using Geogrid to minimize reflective longitudinal cracking: This research is done by the Univ. Texas, Austin. Utilizing 2D Finite element Approach: They are using 2D-plane strain analysis(CPE4R), however, this is a major drawback of their approach using CPE4R (2D plane strain reduced integration) for a pavement system and 1D truss element for the geogrid. We can not find any justifications on the residual errors coming from using those element in their model. Also, there is no arguments on the contact conditions of interfaces, calculations may highly be affected by the interface conditions though. Finite Element Fracture Modeling: Introducing different approaches to define the reflective cracking potential such as SIF(stress intensity factor), J-integral( sort of a strain energy release rate, e.g. G), and CZM (cohesive zone model). However, the major problem is that any of those model does not work properly to explain the geometric discontinunuity like crack. The PFC (Particular Flow code) for DEM (discrete element method) is one of good alternatives for this research. FHWA study about Flexible Pavement Damage Analysis: They did a mechanistic analyses of FHWA’s accelerated loading facility. At least, I noticed that the HMA frequency range in depth resulted in the range of 5-16 Hz, this value is as close as what we are doing recently. And, this research end up with the critical longitudinal strain, which is always higher than transverse strain. This notion is also as similar as what we have. However, this research is also behind the state of art about the viscoelastic and rolling wheel simulation what we are doing.

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