SESSION 1 Modified Asphalt: Paving the Way to the Future
Dr. Everett Crews, Ingevity
Director, Asphalt Paving Alliance
What’s Happening From the Contractor’s Perspective
Contractors are on the front line of the asphalt industry applying the technologies and innovations that improve our highways. Mrs. Miller will present contractors’ perspective on their efforts to keep asphalt pavement at the forefront of our highway system. She will also provide an update on the evolution of the Women in Asphalt Organization.
Technical Director, Asphalt Institute
Asphalt: The Next 100 Years
The Asphalt Institute celebrated its 100th anniversary in 2019, prompting a look back at the changes in the asphalt industry from 1919 through today. We’ve moved into the next 100 years with a look at what the current issues are for asphalt binders and what can we foresee as future challenges and opportunities.
Foundation for Pavement Preservation (FP2)
Looking Into the Future – 2020 Surface Transportation Reauthorization Activities and Their Impact on Pavement Preservation
The five-year highway reauthorization bill which funds surface infrastructure expires September 30, 2020. Congress has begun the long process of reauthorization for this bill. Hear what is being proposed, Congress’ current priorities, how the bill will be funded, and some of the cutting-edge concepts that are being considered for the next transportation legislation that will set policy for the next several years.
Asphalt Executive, Hotelier, and Author
Living Life Riverside: A Humorous Account of a Midlife Course Change
After many years in the asphalt industry, Richard decided to make a career change. In a luncheon talk, Richard will present a humorous discussion of the ups and downs of being a hotel owner in the middle of the Rockies.
SESSION 2 How the Market Views the Future
Technical Director, California Asphalt Paving Association
Building Roads in the Wild West
Mr. Milar will provide insight into the challenges and opportunities facing the asphalt pavement industry in California during the new decade. He will share CalAPA’s strategy to continue the success of asphalt pavements in a dynamic environment.
DR. PAVEL KRIZ
Americas Asphalt Technical Leader, ExxonMobil/Imperial Oil
Refinery Strategies to Produce Asphalt & Future Trends
The refining industry has experienced ongoing significant changes in recent years. Carbon neutrality, electric cars, and ever decreasing sulfur content limits for liquid fuels are some of the factors changing the landscape for refiners. Because asphalt is an important quality product refineries manufacture, it is important to understand what choices refineries are and will be making in this environment to ensure high quality asphalt supply going forward.
DR. BUZZ POWELL
NCAT Assistant Director, Auburn University
Are Recycled Plastics in the Future of Asphalt Pavements?
As part of a worldwide effort to address the global challenge of waste plastics accumulation, NCAT researchers have been working on studies involving chemical characterization and performance testing of asphalt binders and mixtures modified with recycled polyethene (rPE) materials. Dr. Powell will discuss the focus and key results of NCAT’s experiments to date as well as their future research efforts devoted to demonstrating that adding recycled plastics has no negative impact on the long-term performance, life-cycle costs, environmental impact, and recyclability of asphalt pavements or any unintended consequences on the health and safety of plant operators and construction crews.
DR. PETER E. SEBAALY, P.E.
University of Nevada, Reno
Taking Polymer Modification to the Next Level
In a research study sponsored by the Florida Department of Transportation and conducted by the Pavement Engineering and Science Program at the University of Nevada, Reno, researchers evaluated the engineering properties and performance characteristics (i.e., resistance to rutting, fatigue cracking, top-down cracking, and reflective cracking) of eight conventional polymer modified (PMA) and eight high-polymer (HP) modified asphalt mixtures. Dr. Sebaaly presents the highlights and findings of this study.
Managing Director, CTC & Associates
CTC & Associates to Present Results of AMAP Asphalt Market Survey
This is the second year AMAP has commissioned CTC & Associates to conduct a market survey of modified asphalt producers and transportation agencies. Over 150 companies and all state DOTs were invited to participate.
Brian Hirt will present the results on producers’ input on their modified asphalt use in 2019 and 2020 as well as their thoughts on the future of the industry. Did states specify more modified projects? Don’t miss this session at Rancho Mirage to hear the results.
SESSION 3 Additive Innovations
DR. JOHN HARVEY
Professor, University of California Davis
Update on UCPRC Research on Recycled Tire Rubber in Asphalt Pavement
The University of California Pavement Research Center (UCPRC) has several studies underway or recently completed regarding use of recycled tire rubber in asphalt pavements. These include progress on developing tests for use in performance related specifications for asphalt rubber binders, investigation of the rutting performance of thicker gap-graded rubberized asphalt hot mix (RHMA-G) surfaces, rutting resistance of RHMA-G with different maximum aggregate sizes, use of 5 to 10 percent rubber in dense graded mixes, performance of reclaimed rubberized hot mix in new HMA, and performance of conventional RAP in RHMA-G. The results of completed studies will be presented, and the questions being investigated in the studies that are underway and why they are important will be presented. An overview of the CalME asphalt surfaced pavement software that considers rubberized and polymer-modified mixes in structural design will also be presented.
Three biggest changes:
- Need to respond to customers with life cycle assessment based environmental impact information through Environmental Product Declarations
- Increased use of reclaimed tire rubber
- Longer than 10 years: changes in refining economics and asphalt production if market for transportation fuels begins to decrease, combined with increased demand for asphalt as states (and eventually federal) funding are increased to deal with increasing backlog of damaged roads
DR. EVERETT CREWS
Director R&D Pavement Technologies, Ingevity
Graphene Modification of Asphalt Binders
Graphene is a unique, single-atom-thick layer of carbon atoms arranged in a two-dimensional aromatic sheet. The transistor properties of graphene sheets earned two scientists the 2010 Nobel prize in physics. More recently, researchers have also discovered that graphene sheets can be readily dispersed in bitumen and impart beneficial properties to asphalt mixtures. This presentation provides a summary of some of the salient results of recent studies of graphene-doped asphalt in the laboratory and field.
DR. JEAN-PASCAL PLANCHE
Senior VP Asphalt & Petroleum Technologies, Western Research Institute
Binder Structure and Cracking Resistance — Findings from NCRHP Report 9-60
Dr. Planche will cover the highlights of this NCHRP study addressing impacts of changes in asphalt binder formulation and manufacture on pavement performance through changes in asphalt binder testing and specifications.
DR. JERAMIE ADAMS
Program Manager for Hydrocarbons, Asphalt and Petroleum Technology
Western Research Institute
Asphalt Modifiers and Rejuvenators from Coal Derived Chemicals
As thermal coal continues to decrease as a source of electrical power, novel ways to utilize this resource are becoming a reality. The state of Wyoming, through the University of Wyoming and the School of Energy Resources, are investing in developing new materials based on Wyoming coal. While working with WRI new ways to extract coal liquids have been developed that produce very low levels of polycyclic aromatic hydrocarbon (PAHs) and these coal liquids have been chemically modified to produce asphalt additives that can enhance unaged and aged asphalt properties.
Technical Services and Applications Development, DOW Inc.
Plastics! Recycled Plastic Modified Asphalt Binder
Recently, there has been a significant push to use recycled plastics as asphalt modifiers. In the US, this has been driven by consumer and government interest to increase the rate of recycling plastic products. This presentation will review what types of recycled plastics may serve as modifiers to meet performance-based binder specifications along with a survey of recent field projects as case studies.
Asphalt Chemist, BASF
Effects of Isocyanate-Based Chemistry Modification on Asphalt Binder
Orr will introduce the science and value of isocyanate chemistry (a polyurethane precursor) and its positive effects on asphalt binders. In addition, he will present data about the compatibility and synergy with other binder modifiers such as Styrene-Butadiene-Styrene (SBS).
SESSION 4 Owner/Agencies Experiences
SKIP PAUL and SAM COOPER
Chair, AMAP DOT Advisory Board (Skip)) and Louisiana DOT (Sam)
Ensuring Successful Projects Takes Teamwork
Chief Chemist, Delaware DOT
Using the MSCR Test to Better Characterize High Polymer Asphalts
The MSCR test created an elastomeric curve (AASHTO R92) which helped characterize polymer modified asphalts. For specialty asphalts with high polymer loadings, R92 is inadequate in specifying. However, within standard MSCR test data one can better define these high polymer asphalts without redoing R92 and M332.
Engineer, Los Angeles County Public Work
Modified Experience at the County Level
Los Angeles County Public Works embraces a pavement preservation approach to preserve and extend the life of their road network. By using sustainable treatment approaches rather than conventional treatment methods, the county was able to significantly reduce energy consumption, greenhouse gas emissions, landfill deposition, and costs.
Northern Region Materials Lab (NRML) Supervisor, Alaska DOT
Evaluation of Modified Binders in Alaskan Pavements
Ms. Schaefer from Alaska DOT will present the laboratory and field evaluations of modified asphalt binders that must meet the challenges of the Alaskan climate.
Research Project Engineer, Minnesota DOT
Field Sections in Minnesota with Asphalt Mix Rejuvenators and Cold Recycling
In this presentation, Vrtis will discuss the experimental design, construction, and preliminary results for field sections that were constructed under partnerships led by the Minnesota Department of Transportation (MnDOT). The National Road Research Alliance (NRRA) has built ten field sections in northern Minnesota using a higher than allowable RAP content with seven different rejuvenator products. In a separate partnership between MnDOT and NCAT, field sections were constructed with numerous cold recycling techniques including cold-in-place recycling, stabilized full-depth reclamation, and cold central-plant recycling.
DR. LOUAY MOHAMMAD
Professor, Louisiana State University /LTRC
Relation Between Flexible Pavement Layers Bonding and Durability
The American Society of Civil Engineers reported that 5% to 25% improvement in pavement performance has the potential to yield an annual savings $1.75 to $8.75 billion. These savings can be realized and reinvested into the highway through the design and construction of durable pavements. There have been significant advancements in technology and techniques for pavement design and construction. These advancements have the potential to improve durability and performance and be cost effective. Dr. Mohammad will present tack coat best practices and its influence on pavement performance from field sites throughout the country.