- Session 1 – Modified Asphalt: Paving the Way to the Future of the Asphalt Industry
- Session 2 – How Owner/Agencies Make Sense and Save Dollars with Modified Asphalt
- Session 3 – Specifications and Technical Updates: What You Need to Know Today
- Session 4 – How Owner/Agencies Make Sense and Save Dollars with Modified Asphalt (continued)
- Session 5 – Modified Asphalt Innovation
(Note: All presentations are subject to change.)
Preparation × Implementation = Success
Former Asphalt Contractor, Former Member of the Pittsburgh Steelers
Twelve years in the NFL and more than 30 years as a successful entrepreneur have taught Robin the importance of strategic planning and the ability to utilize teamwork to implement the plan on game day. The first round draft choice of the Steelers in 1977, two time Pro Bowler, and member of the renowned Steel Curtain will discuss the lessons learned both on and off the field.
SESSION 1 – MODIFIED ASPHALT: PAVING THE WAY TO THE FUTURE OF THE ASPHALT INDUSTRY
The Asphalt Pavement Alliance – Delivering Asphalt Value
Amy (Murray) Miller
National Director, Asphalt Pavement Association
This presentation will discuss the mission and structure of the Asphalt Pavement Alliance as well as a new regional approach to the Asphalt Pavement Alliance’s strategic vision. Learn how the Alliance is being transformed to bring its research and marketing assets closer to the owners by engaging asphalt partners across the country.
Asphalt Institute’s Vision for the Asphalt Industry
President, Asphalt Institute
Grass will give an update in broad terms about the liquid asphalt market historically using 2015 market data. He will also give us a look into the current activities of the Asphalt Institute, including the recent work of its Asphalt Institute Foundation, which plans to host a Strategic Asphalt Research Symposium (STAR) in May.
NAPA Update: Leading the Way and Meeting Challenges
Dr. Audrey Copeland
Vice President, National Asphalt Pavement Association
This talk will provide an overview of the asphalt pavement market and national issues that the industry is facing. The focus of the talk will be NAPA’s partnerships and efforts to meet the challenges and advance the industry through scientific research, engineering, legislative activities, and marketing. The latest products and deliverables available to the industry will be highlighted.
Making America’s Highways Great Again-Federal Funding Update
Executive Director, FP2 Inc.
In December of 2016, Congress passed the Fixing America’s Surface Transportation (FAST) Act. The bill authorized $281 billion to boost highway spending over five years through September 30, 2020. This is the first highway reauthorization bill to cover a period longer than two years that Congress passed in more than a decade. Passage of this bill provided much needed certainty to the industry, state and local transportation agencies, and highway users.
One issue that continues to be problematic is the permanent funding of the Highway Trust Fund. It is estimated that transfers from the General Fund in 2020 will exceed $100 Billion unless Congress finds a solution to the transportation funding problem. The President-Elect has indicated a desire to launch a massive infrastructure program, but funding it will be a major effort.
Balanced Mix Design: A Formula for Success
Dr. Shane Buchanan
Asphalt Performance Manager, Oldcastle Materials
In recent years, transportation agencies have implemented various solutions to observed pavement durability problems. While these solutions may work in some instances, a better formula for success is to utilize a Balanced Mix Design (BMD) system, using appropriate mixture performance testing/criteria, to design the mix for the intended application and service requirement. Today, several BMD approaches are being utilized by agencies. These BMD approaches and accompanying performance testing will be discussed along with an update of related national research activities.
SESSION 2 – HOW OWNER/AGENCIES MAKE SENSE AND SAVE DOLLARS WITH MODIFIED ASPHALT
State-of-the-Art Asphalt Emulsions – A Strategic Perspective
Technical Director, ULTRAPAVE
The benefits of modified emulsions are expanding the use of emulsions today. With tight paving budgets, high quality preservation products will keep suppliers competitive. This presentation will discuss the “how and why” of modified emulsions.
Why New York State is going 100% Modified
Vice President, Suit-Kote Corporation
New York State has dramatically increase their use of modified asphalt binders over the last five years. This presentation will look at the reasons for this significant shift.
Paving Colorado With Modified
Division QA/QC Manager, Martin Marietta Materials, Inc.
SESSION 3 – SPECIFICATIONS AND TECHNICAL UPDATES: WHAT YOU NEED TO KNOW TODAY
FHWA Expert Task Groups Status Report
Federal Highway Administration
Highly polymer modified asphalt (HiMA) binder has been used successfully in past accelerated performance testing on the NCAT Pavement Test Track to minimize the thickness of perpetual pavements and to salvage a completely failed pavement with a simple mill/inlay. In the current (2015) 3-year research cycle, asphalt mixes produced with HiMA binder are playing an important role in the partnership between NCAT and MnROAD in two separate experiments with nationwide implementation impact. In the preservation group (PG) experiment, the life extending and condition improving benefits of thinlays produced with HiMA binder are being quantified in northern and southern climates in both low (CR-159 in the south and CR-8 in the north) and high (US-280 in the south and US-169 in the north) traffic applications. In the cracking group (CG) experiment to identify laboratory methods that predict field performance, mixes produced with HiMA binders represent the high end of performance to resist surface cracking on the NCAT Pavement Test Track and thermal cracking at MnROAD. Asphalt pavements produced with HiMA binders have thus far provided excellent performance in both experiments, climates, and traffic levels.
Industry Progress & Future Trends
Director of Research and Laboratory Services, Asphalt Institute
This presentation will focus on laboratory testing of modified asphalt binders and mixtures and trends for use and specifications.
Asphalt Mixture Crack Testing: A summary review of current practices
This presentation will focus on the varied asphalt mixture cracking tests currently in use and their applications for characterizing asphalt mixture performance.
The Secret to Beating PCC: Life Cycle Cost Analysis Made Simple
Sr. Account Manager, DuPont
What is the economic cost of using modifiers and additives in pavements? This presentation will summarize how changes to the estimated life of a road affect the cost/benefit balance using simple financial analysis.
What’s New with the MSCR Specification (AASHTO T350)
Dr. John D’Angelo
President, D’Angelo Consulting
Several highway agencies have adopted the MSCR specification over the past year. In general, this has been a smooth transition. However, in a few locations issues have arisen leading to a rocky transition. One of the major issues involves the criteria for Jnr diff. This is the parameter that limits the amount of shear yielding allowed when going from low stress to high stress loading. Several new concepts are being explored to better evaluate the potential for stress sensitivity and how to apply it in the specification. This presentation will discuss these concepts and provide insight to possible specification adjustments.
Asphalt Market Perspective
Speaker to be announced
SESSION 4 — HOW OWNER/AGENCIES MAKE SENSE AND SAVE DOLLARS WITH MODIFIED ASPHALT (CONTINUED)
HiMA Mix for Structural and Preservation Applications at NCAT and MnROAD
Dr. Buzz Powell
National Center for Asphalt Technology
Highly polymer modified asphalt (HiMA) binder has been used successfully in past accelerated performance testing on the NCAT Pavement Test Track to minimize the thickness of perpetual pavements and to salvage a completely failed pavement with a simple mill/inlay. In the current (2015) 3-year research cycle, asphalt mixes produced with HiMA binder are playing an important role in the partnership between NCAT and MnROAD in two separate experiments with nationwide implementation impact. In the preservation group (PG) experiment, the life extending and condition improving benefits of thinlays produced with HiMA binder are being quantified in northern and southern climates in both low (CR-159 in the south and CR-8 in the north) and high (US-280 in the south and US-169 in the north) traffic applications. In the cracking group (CG) experiment to identify laboratory methods that predict field performance, mixes produced with HiMA binders represent the high end of performance to resist surface cracking on the NCAT Pavement Test Track and thermal cracking at MnROAD. Asphalt pavements produced with HiMA binders have thus far provided excellent performance in both experiments, climates, and traffic levels
West Virginia Coal Trucks and Grooves That They USED TO Ride In
Travis Walbeck, P.E.
Asphalt Group Supervisor / Pavement Engineer, West Virginia Division of Highways
West Virginia is known for coal production and rugged terrain. The narrow roads winding along creeks see thousands of coal trucks annually. Soft binders, slow moving loads, and intersection had led to ruts that were a hazard in places. Polymer modified asphalt binders were one of the key factors used to practically eliminate the problem.
Perpetual Pavements: Why and How
Dr. David Newcomb
Division Head, Materials and Pavements, Texas A&M Transportation Institute
Perpetual pavements save money on highway users costs, maintenance costs, and rehabilitation costs. As traffic and congestion increase with time, the idea of having low maintenance infrastructure in place will become increasingly important. The concept of perpetual pavements was introduced in 2001 by the Asphalt Pavement Alliance. Since that time, design and construction procedures have evolved to recognize the fatigue endurance limit so that deep structural failures may be avoided and any distresses are limited to the upper pavement layers. Cracking and rutting resistance in the upper layers can be improved with the addition of polymer modified asphalt which will improve the life cycle cost of the pavement by extending the time between maintenance treatments. The next step will be to reduce the design thickness through the use of high modulus base materials where high stiffness binders containing polymers are used in a low-void mixture to provide fatigue resistance.
SESSION 5 — MODIFIED ASPHALT INNOVATIONS
Asphalt Innovation – Mapping out the Future
Dr. Laurand Lewandowski
Director, Asphalt Innovation
Owens Corning Corporation
Owens Corning Corporation
This presentation will focus on the challenges that we face in the asphalt roofing and paving industry as we move towards the future. The type and quality of asphalt continues to change and will impact how we meet the performance requirements in each industry related to asphalt coating and polymer modified asphalt.
New Jersey’s RAP and Modified Project Considerations
Dr. Thomas Bennert
Professor, Rutgers CAIT
Combined Effect of SBS/DVR/CR Modification on PG and Rutting Resistance of Asphalt Binders
Dr. M. Emin Kutay
Associate Professor of Civil & Environmental Engineering, Michigan State University
Paper Authors: M. Emin Kutay, Ph.D., P.E. and Salih Kocak, Ph.D.
Recycled tire rubber (RTR) modified asphalt binders have been accepted/specified by many roadway agencies through special provisions. This is due to the fact that the current Performance Grading (PG) system is not approved/designed for use in traditional RTR modified binders (e.g., CRTB – Crumb Rubber Terminally Blend and CRWet – Crumb Rubber Wet processes). Since most RTR modified binders are essentially suspensions, it has been claimed that the amount and size of the particles may affect the results in the parallel plate geometry used in the Dynamic Shear Rheometer (DSR). One of the recently re-introduced crumb rubber modified asphalt technologies is the so-called “Partially De-Vulcanized Rubber (DVR)”. The primary advantage of DVR is that, when mixed with asphalt binder, the rubber particles completely dissolve within the binder (similar to a polymer-modified binder). The final product, i.e., the DVR modified binder is a complete fluid, not a suspension. As a result, the PG system can be applied to specify a DVR binder. The main objective of this research was to investigate the relative and combined performances of the SBS polymers and two different recycled tire rubber (RTR) modifications in an asphalt binder. The scope of this study included modifying one type of binder (PG58-28) by using two types of polymers (SBS), CR (- #20 size) and the DVR obtained from a manufacturer located in Ohio. The performance tests included determination of continuous performance grades (PGs) (at high, intermediate and low temperatures), and rutting potential using Multiple Stress Creep Recovery (MSCR) test.