2014 Conference a Big Success in the Big Easy
By Karissa Mooney, HollyFrontier
The W Hotel in New Orleans was the site of AMAP's 15th annual meeting, held February 18-20, 2014. The meeting was a tremendous success, with attendance of about 140 individuals from the modified asphalt industry.
The meeting featured a special keynote address from former Ohio governor Ted Strickland. Presentations addressed a wide range of topics, with presenters from a broad-based group that included the Asphalt Institute, NAPA, FHWA, state departments of transportation, and industry leaders
The panel discussion at the event centered around Multiple Stress Creep Recovery (MSCR) specification and implementation efforts based on the regional User/Producer groups (read more). The Modified Asphalt Innovation session covered highly modified emulsions for microsurfacing, modified warm mix asphalt lab and field performance, and recycled asphalt using recycled asphalt shingles (RAS). All presentations are available to 2014 conference attendees and AMAP members.
Change was in the air at this year's conference as AMAP Executive Director Bob Berkley retired (read more). With his 53 years of experience, he was heard to say, "I made it, laid it, sold it, promoted it, bid it, designed it, sampled it, tested it, compacted it, cooled it, modified it, and finally in my latter years, organized it. And overall, one thing for sure: loved it." Bob leaves AMAP knowing that it is in good hands with AMAP's new Executive Director, Jim Sattler, who has been part of AMAP since the first organizational meeting in St. Louis in 1997.
The meeting was highlighted by the Awards Ceremony Luncheon in which Berkley was inducted into the AMAP Hall of Fame. Berkley was also awarded the AMAP Person of the Year award and named AMAP Executive Director Emeritus.
Special thanks go out to the members of AMAP's Program Committee for their hard work in planning the event and to our speakers for their willingness to present.
Save the date for 2015!
Please remember to mark your calendars for our meeting next year in Jacksonville, Florida from February 17-19, 2015. We hope to see you there!
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From the President's Desk
The Asphalt Institute likes to say: "Follow the liquid," when describing their strategic direction.
So I thought about AMAP and tried on "Follow the modifier." As I looked at these words as they relate to AMAP, it did not really register as something we could flatter via copying. A more appropriate quote might be "Follow the specifications," or "Follow the money, or lack thereof," and maybe even "Follow the asphalt changes."
The bottom line is we use modifiers for several reasons:
- To meet specifications
- To enhance asphalt performance
- To stretch every dollar
And the list goes on...
Where we started and where we continue to focus is to provide materials and products to the asphalt industry where the desired performance cannot be accomplished with straight-run asphalt. To that end, we need to be keenly aware of the performance factors we can affect via modification, while at the same time remaining involved with evolving challenges to our industry. This is the specific reason we are currently engaged and involved with research into the increased use of RAP (reclaimed asphalt pavement) and RAS (recycled asphalt shingles). This is what AMAP is all about.
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Regional Producer/User Groups Advance Superpave with the MSCR Test
By Dan England, LCY Elastomers
The Superpave binder specification has always been a work in progress, and that's just as it should be. The PG Binder Specification must evolve as advances in testing and engineering give us better tools to predict pavement performance. This is especially true for modified asphalt.
Among the many outstanding presentations made at this year's annual AMAP conference were a number about a very important subject for our membership: implementation of the Multiple Stress Creep Recovery (MSCR) test.
The grade bumping question...
Since the inception of the specification, it has been known that modified asphalt performs differently with respect to rutting than traditional dynamic shear rheometer (DSR) testing would suggest. To compensate, the practice of "grade bumping" (increasing the high temperature grade by one or two grades) became prolific. (Superpave Performance Grade Plus ("PG+") specifications also ensure that an asphalt is modified.)
With grade bumping, binders are tested not at the environmental temperatures they are likely to be subjected to in service but at temperatures much higher. The question becomes: Does this accurately depict the binder's performance?
...and MSCR provides the answers
Current research has shown that to more accurately characterize modified asphalt one must look not only at binder stiffness but at shear sensitivity as well. MSCR testing accomplishes this.
MSCR testing is run on the DSR and takes only a few additional minutes to test and analyze the data. The outputs are Percent Recovery, Jnr (creep compliance value) and Shear Sensitivity (Jnr differential). These outputs define a binder's ability to recover from repeated applied loads.
The test is also run at the intended climatic service temperature (tested at 64°C rather than Grade Bumped to 76°C). The Recovery output can also be used in place of many of the PG+ tests that are being used across the United States today.
Regions make progress
During the AMAP meeting, representatives from all of the user/producer groups across the United States discussed the status of MSCR implementation in their respective regions. As was the case of the implementation of the PG binder specifications, each state is proceeding at its own rate.
A synopsis of the MSCR implementation timeline by region follows:
- North East Asphalt User Producer Group (NEAUPG)
Most states will fully implement MSCR test and new PG grades at some point in 2014 (some by change orders).
- North Central Asphalt User Producer Group (NCAUPG)
One state, Missouri, has been using MSCR and new PG grading since 2011. Other states are moving much slower, with three states considering implementation in the 2015-2016 time frame.
- Southeast Asphalt User-Producer Group (SEAUPG)
12 of the 14 member states have tentatively agreed to implement MSCR recovery test in place of elastic recovery. 13 of the 14 member states have agreed to run the test at the regional environmental grade temperature of 64° or 67°C.
- Rocky Mountain Asphalt User/Producer Group (RMAUPG)
All states have been running the MSCR test for informational purposes only. The Western Cooperative Test Group (WCTG) has been including MSCR in its testing protocol since 2008. Through workshops and discussion of the WCTG test results, variability in MSCR testing has been reduced. Momentum is building to eventually replace some or all of the PG+ tests in the RMAUPG region.
- Pacific Coast Conference on Asphalt Specifications (PCCAS)
MSCR testing is being used in specifications for specialty grades in a few states and for report only in a few other states. Individual states are progressing at varying rates towards full implementation of MSCR testing or the use of MSCR recovery.
2014 conference attendees and AMAP members may view these updates in their entirety on the conference presentations page of the AMAP website.
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Executive Director's Message
Solving Problems — Filling Needs
They say you're never too old for another career change. Having been associated with AMAP since Bob Berkley invited me to the first formation meeting in 1997, I couldn't resist this opportunity to follow in his footsteps as your new Executive Director. I look forward to this exciting new chance to help fulfill our Association's mission of promoting the benefits and use of modified asphalt pavement systems.
AMAP was founded on the premise that marketing the technological benefits of modified asphalt is as essential as the technology itself. After 45 years in sales and marketing, I have come to the conclusion that marketing strategy is a pretty simple process. It boils down to the basic concepts of solving problems and filling customer needs. The hard part is implementing the tactical plans that successfully define those true needs and properly position products and services to fill them.
I had a salesman once whose tactical plan was "let's cut the price and go eat." But today, rapidly changing innovation and increasing competition at every level of our industry is making it far more difficult to do business with this kind of monolithic tactical plan. To stay in business, it is essential that we do a better job of defining our customers' real and perceived needs and continually refine our use of "marketing mix" tools to provide the right goods and services at competitive value. This is true both for our Member Companies and for AMAP as an association.
As AMAP evolves, we are working hard to provide our members with the latest information on the technical features, functions and benefits of modified asphalt systems as well as the supporting proof that customers expect. We have begun to strengthen our committee system to provide more technical data, education, and success profiles as well as political and technology updates of importance to the industry and our members. In addition, we are exploring new and better vehicles for getting our message out where it will support our members.
AMAP's goal is to increase the level and quality of information and services we provide in the form of newsletters, brochures, workshops, articles and other means that our committee system can identify. But keep in mind we are a member-driven organization and our committee system needs your support to turn our goals and objectives into meaningful results. I believe one of the true benefits of AMAP membership is the ability to network through our committee structure, as it is often not what you know but knowing people who have the information you need.
In the coming months, I hope to talk with as many of our members as possible. Our Board of Directors and I value the views of our membership, and we want to be responsive to your needs. So don't hold back! I'd welcome your call any time you have an idea, suggestion, or improvement or if you wish to get more involved.
Executive Director, AMAP
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AMAP Honors Bob Berkley
Cheers to the Man who Paved the Way
By John Casola, Malvern Instruments
AMAP has come quite a way from its start back in 1997, back when it was merely an idea, just a concept. Robert W. Berkley (Bob to those who meet him) was the man behind AMAP. It was Bob who had the vision to create an organization dedicated to the advancement of the asphalt paving market. It was Bob’s efforts that brought together the industry’s lead innovators who shared in his desire to not only provide better engineered pavements, but to also educate consumers on the value of these better designs.
Bob saw the promise in better modified asphalt — in its ability to create more durable roadways when paired with best construction practices. His vision laid the foundation for AMAP, an organization that has grown to be a tremendous resource to the asphalt industry encompassing all areas of modified asphalt.
While Bob has been a large part of this successful organization as founder and executive director since 1997, his resume includes many other notable accomplishments during his 50 years in the asphalt industry:
- President of St. Charles Quarry and Defiance
- Chairman of the Board and CEO of Missouri Petroleum
- CEO of Polymer Asphalt Products
- President and owner of Greenberry Enterprises
- Founder and Executive Director of the Association of Modified Asphalt Producers
While holding any one of these positions would be the career highlight for many, Bob took the helm of each one of these organizations, and left an indelible mark on the industry in the process.
Bob also deserves recognition for his intangible contributions to the asphalt paving community. Throughout his career, Bob has served as a mentor to just about everyone who has had the privilege to work with him. In recognition of his service to the industry, Bob was inducted into the AMAP Hall of Fame this year, exactly where he belongs, alongside all of those others who have made a positive impact on our industry. The AMAP Hall of Fame is reserved for those individuals who have made significant contributions to the modified asphalt industry, and Bob has earned his place among this elite group.
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Congratulations 2014 David Jones Scholarship Winners
By Delmar Salomon, Pavement Preservation Systems
AMAP is pleased to announce the 2014 David R. Jones IV Scholarship recipients. Two $1,500 awards were presented to Ph.D. students at the University of Wisconsin and Iowa State University, and AMAP presented a third award for $1,000 to an undergraduate student at Rutgers University.
University of Wisconsin-Madison
Graduate student winner
Raquel's work has focused on the development and implementation of sustainable-engineered materials that can be used as alternatives to common materials in the pavement industry.
Raquel says she is passionate about the field of asphalt chemistry and is actively involved in the asphalt industry. Working at the University of Wisconsin Modified Asphalt Research Center (MARC) has given her a unique opportunity to work with a very diverse group of researchers.
Her Ph.D. thesis is focused on developing a fundamental understanding of how to select and proportion mineral filler concentrations in asphalt pavements to reduce impact on oxidative aging and improve the service life of highways. Also, a simple framework is proposed to use existing laboratory aging techniques for estimating aging rates of filler-asphalt mixes typically used in paving or roofing practice.
Raquel comments, "I am extremely honored and grateful to receive the prestigious Dr. David R. Jones IV Scholarship and thank AMAP for this recognition of my personal accomplishments and efforts. This award has encouraged me to continue my research in the asphalt and material science field. Additionally, I would like to thank AMAP for being supportive of students and providing a vehicle that enables students, scientists, and engineers from all over the world to exchange information and develop professionally."
Iowa State University
Graduate student winner
Andrew's award was based on his innovative work on the development of a new vegetable oil-derived biopolymer that can be used to modify asphalt binder. He has also conducted research on evaluating recycled asphalt shingles in hot mix asphalt and on developing a crack relief-interlayer mix design specification for the Iowa DOT. Beyond research, Andrew has worked in industry and in the transfer of asphalt technology to highway agencies.
Upon earning his Ph.D., Andrew hopes to make an impact in the asphalt industry through further research and development of asphalt technology and by transferring that knowledge to asphalt producers and transportation agencies.
Andrew was first exposed to asphalt materials as a freshman at Michigan Technological University after being awarded the Bob Thompson Scholarship. That scholarship was part of the Pavement, Design, Construction, and Materials Enterprise Program, which included classes that focused on student-led projects in asphalt pavements. After graduating, Andrew earned his P.E. license by working in positions connected to the asphalt industry, first as a quality control engineer for Granite Construction, and then as a construction materials consulting engineer. After five years, Andrew saw the industry need for engineers with advanced knowledge in asphalt materials, so he enrolled in the graduate program at Iowa State University.
Rostyslav is a senior undergraduate at the Civil and Environmental Engineering at Rutgers School of Engineering. He says he had the opportunity to experience different branches of civil engineering and became excited about the areas of transportation and pavement design.
He gained hands-on experience as a laboratory technician engineer at the Center for Advanced Infrastructure and Transportation (CAIT) at Rutgers University. This allowed him to further extend his interest in the transportation and asphalt industry. He became the lead technician engineer and worked on many different projects, performing a variety of asphalt tests including the extraction and recovery of asphalt binder. He mastered that procedure and became quickly an expert in the area, relating binder performance grade to many of his test results.
After graduating, Rostyslav plans to pursue a Master's degree in transportation and pavement design while continuing to work as the lead laboratory technician at CAIT.
The David R. Jones IV Scholarship Fund
The David R. Jones IV Scholarship Fund was founded by AMAP in 2009 in memory of late asphalt industry leader Dave Jones IV. Jones served in a variety of capacities in the asphalt industry, including time at the University of Texas, where he was a key member of the Strategic Highway Research Program (SHRP) team responsible for Performance Graded Asphalt Binder Specification. The award is presented annually to one or more outstanding undergraduate and graduate students majoring in a field of study related to asphalt technology, such as civil engineering, chemical engineering and chemistry.
Dave was an asphalt industry pioneer, and this scholarship gives us the opportunity to honor him while also helping future leaders in the industry.
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Henry Romagosa: A Legend Retires
A legend of the asphalt industry is settling into a life of leisure watching the Red Sox play ball. Our friend Henry Romagosa retires from ICL Performance Products at the end of July.
Henry was a founding member of AMAP and has always been a go-to guy, whether we needed advice or to get something done within our association, our careers or even our personal lives.
We will sorely miss his counsel, but truly wish him well in retirement. Thanks again, Henry!
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Member Website Access
Attention AMAP members. Don't forget that one of your benefits of membership is access to our extensive database of technical articles in our archives. If you don't have an access code, please contact Jim Sattler at firstname.lastname@example.org.
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Asphalt's Rich History
(Excerpted from Wikipedia)
The use of asphalt/bitumen for waterproofing and as an adhesive dates at least to the fifth millennium B.C. in the early Indus community of Mehrgarh, where it was used to line the baskets in which they gathered crops.
In the ancient Middle East, the Sumerians used natural asphalt/bitumen deposits for mortar between bricks and stones, to cement parts of carvings, such as eyes, into place, for ship caulking, and for waterproofing. The Greek historian Herodotus said hot asphalt/bitumen was used as mortar in the walls of Babylon.
In some versions of the Book of Genesis in the Bible, the name of the substance used to bind the bricks of the Tower of Babel is translated as bitumen (see Genesis 11:3), while other translations use the word pitch. A one-kilometer tunnel beneath the river Euphrates at Babylon in the time of Queen Semiramis (ca. 800 B.C.) was reportedly constructed of burnt bricks covered with asphalt/bitumen as a waterproofing agent.
Asphalt/bitumen was used by ancient Egyptians to embalm mummies. The Persian word for asphalt is moom, which is related to the English word mummy. The Egyptians' primary source of asphalt/bitumen was the Dead Sea, which the Romans knew as Palus Asphaltites ("Asphalt Lake").
Approximately 40 A.D., Dioscorides described the Dead Sea material as Judaicum bitumen, and noted other places in the region where it could be found:
"The Judaicum Bitumen is better than others; that is reckoned the best, which doth shine like purple, being of a strong scent & weightie, but the black and fowle is naught for it is adulterated with Pitch mixed with it. It growes in Phoenice also, and in Sidon, & in Babylon, & in Zacynthum. It is found also moyst swimming upon wells in the country of the Agrigentines of Sicilie, which they use for lamps instead of oyle, and which they call falsely Sicilian oyle, for it is a kinde of moyst Bitumen."
The Sidon bitumen is thought to refer to asphalt/bitumen found at Hasbeya. Pliny refers also to asphalt/bitumen being found in Epirus. It was a valuable strategic resource and the object of the first known battle for a hydrocarbon deposit, between the Seleucids and the Nabateans in 312 B.C.
In the ancient Far East, natural asphalt/bitumen was slowly boiled to get rid of the higher fractions, leaving a material of higher molecular weight which is thermoplastic and when layered on objects becomes quite hard upon cooling. This was used to cover objects that needed waterproofing, such as scabbards and other items. Statuettes of household deities were also cast with this type of material in Japan, and probably also in China.
In North America, archaeological recovery has indicated asphalt/bitumen was sometimes used to adhere stone projectile points to wooden shafts.
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