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Schedule at a Glance

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Monday, November 5

10:00 a.m. - 10:20 a.m.

Speakers:

Russell McMurry, P.E., Commissioner, Georgia Department of Transportation

Pete K. Rahn, Maryland Secretary of Transportation

10:20 a.m. - 10:45 a.m.

Stone mastic (matrix) asphalt was first placed in fifty years ago in 1968 near Kiel, Germany, while the United States implemented this premium technology over 25 years ago. Despite the presence of a low bid environment, some agencies have turned to SMA as a trusted product to give them performance. As one of the individuals responsible for bringing SMA to the United States, Mike Acott will explain why the industry looked to this product in the 1990s and why it is still a product truly engineered for performance today.

 

Speaker:

Mike Acott, President, National Asphalt Pavement Association

10:45 a.m. - 12:00 p.m.

Panelists:

Pete K. Rahn, Maryland Secretary of Transportation

Knut Johannsen, Head of MPA at EUROVIA Services GmbH, Germany

Matthew Corrigan, Asphalt Pavement Engineer, Federal Highway Administration, Washington, DC

12:00 p.m. - 1:00 p.m.

1:00 p.m. - 1:30 p.m.

Cold and long winters and the use of studded tires caused a lot of damages in the road network in Germany in the 1960s. The industry was looking for a solution how to repair these damages. A hot liquid mastic was used to fill the “mechanical ruttings” and to make the more resistant to the traffic a single size aggregates fraction was manually spread into the mastic. The repair mix showed an excellent resistance on one hand side to the damages caused by the studded tires but also to the deformations during the hot summer months caused by heavy duty traffic. Two major contractors picked-up the idea of that repair mix and industrialized it giving birth to SMA. The first section was paved on July 30th, 1968 in Wilhelmshaven. A journey through 50 years of success with Stone Mastic Asphalt. 

 

This presentation will cover the further development of SMA and SMA based mixtures during the last 50 years and will show new possibilities e.g. noise reduction and structural layers. Futhermore, it will provide additional information regarding the spread of SMA around the globe will be seen with examples from Korea, Taiwan, China, Philippines, Australia, New Zealand, Mexico, Brazil, Argentina, Israel, Turkey and of course all over Europe.

 

Speaker:

Horst Erdlen, Manager Business Unit bei J. Rettenmaier & Söhne, Germany

1:30 p.m. - 2:00 p.m.

2:00 p.m. - 2:30 p.m.

The Pennsylvania Department of Transportation is one DOT in the US that knows SMA can be a part of its Long Life Asphalt Pavement Program. Since originally developing its SMA standards, it implemented Warm Mix SMA in 2017 and conducted performance testing to baseline and validate it’s premium performance. Today, PennDOT uses WMA SMA in all 11 PennDOT Engineering Districts.

 

Speaker: 

Neal Fannin, Pavement Materials Engineer, PennDOT

2:30 p.m. - 3:00 p.m.

3:00 p.m. - 3:30 p.m.

Since its introduction into the United States, stone matrix asphalt has gained great popularity among state highway agencies as a premium asphalt mix to enhance field performance and extend life expectancy of asphalt pavements and overlays. Considering that SMA is generally more expensive than the conventional Superpave dense-graded mixture, mainly due to higher asphalt contents, requirements for more durable aggregates, and inclusion of fibers as stabilizers, it remains unclear whether the higher cost of SMA can be justified by the increase in life expectancy of the mix. This presentation highlights a study undertaken to quantify the performance and life-cycle cost benefits of SMA versus those of polymer-modified Superpave dense-graded mixtures used on similar trafficked highways.

 

Speaker: 

Fan Yin, Assistant Research Professor, NCAT

3:30 p.m. - 4:00 p.m.

Speaker:

Terry Roof, Assistant General Manager of Asphalt Plants, Superior Paving

4:00 p.m. - 4:30 p.m.

Efficient compaction of SMA in the field is similar in many ways to compacting other asphalt mix types; however, there are inherent challenges that can occur due to the nature of the materials in the mixture. Learn the best practices for ensuring that SMAs achieve the desired density in the field to help ensure performance. A brief comparison of field compaction approaches in North America and Europe and how they impact SMA construction will be also be presented.

 

Speaker:

Todd Mansell, Product Application Specialist, Caterpillar Paving

4:30 p.m. - 5:00 p.m.

Speaker:

Kamil E. Kaloush, PhD, PE, Professor, Arizona State University

5:45 p.m. - 7:00 p.m.

A welcome reception will be available for all of those in attendance. This is an opportunity to network and enjoy time with other conference participants.

 

Tuesday, November 6

7:00 a.m. - 8:00 a.m.

8:00 a.m. - 10:00 a.m.

8:00 a.m. - 10:00 a.m.

10:00 a.m. - 10:30 a.m.

10:30 a.m. - 12:00 p.m.

10:30 a.m. - 12:00 p.m.

12:00 p.m. - 1:00 p.m.

1:00 p.m. - 3:00 p.m.

1:00 p.m. - 3:00 p.m.

3:00 p.m. - 3:30 p.m.

3:30 p.m. - 5:00 p.m.

3:30 p.m. - 5:00 p.m.

5:45 p.m. - 6:45 p.m.

A networking reception will be available for all of those in attendance. This is an opportunity to network and enjoy time with other conference participants.

  

Wednesday, November 7

7:00 a.m. - 8:00 a.m.

8:00 a.m. - 8:30 a.m.

The main oval pavement structure at the Indianapolis Motor Speedway was originally constructed in 1909.   Although it is commonly referred to as The Brickyard, the original pavement was an aggregate base on compacted subgrade with a sealcoat as the original racing surface.  That surface failed during a series of race events on August 19, 1909 and was replaced in the fall of that same year with a layer of paving bricks, most of which still exist at the bottom of the current pavement structure.  The utilization of hot-mix asphalt began on portions of the turns in 1936, but it wasn’t until 1976 before the entire track was paved at one time.  The most recent rehabilitation occurred in 2004, and this presentation will inform the audience as to why SMA was chosen, what the designs looked like along with field results, how the project went and how it’s been performing today.  The existing racing surface will be 14 years old this fall and has lasted longer than any full resurfacing placed to date, which is directly attributable to the use of SMA.”

 

Speaker:

William J. Pine, P.E., QC Director of Asphalt Technology, Heritage Construction & Materials, Heritage Research Group @ The Center

8:30 a.m. - 9:00 a.m.

SMA produced from larger sized aggregates can provide a surface texture that exceeds the 1 mm typically required by airport regulators around the world.  As a result, many Australian airports are interested in SMA as an ungrooved runway surface.  However, other countries, such as China and Germany, have already made significant use of SMA as an ungrooved runway surface.  This paper describes the benefits and global use of SMA as an ungrooved runway surface and describes the current effort to introduce this technology to Australian airports.

 

Speaker:

Greg White, Director of the Airport Pavement Research Program, University of the Sunshine Coast

9:00 a.m. - 9:30 a.m.

While stone matrix asphalt is a mixture of choice for durability, it is also becoming the sustainable choice in Denmark. The Danish Road Directorate (DRD) has recently developed an SMA mixture designed to reduce the rolling resistance of the pavement. This, in turn, will reduce the emissions coming from vehicles and save money on fuel for the country. This presentation will provide the latest information regarding the DRD and their low rolling resistance mixture.


Speaker:

Matteo Pettinari, PhD., Specialist in Asphalt Materials and Flexible Pavements, Danish Road Directorate 

9:30 a.m. - 10:00 a.m.

10:00 a.m. - 10:30 a.m.

10:30 a.m. - 10:50 a.m.

10:50 a.m. - 11:50 a.m.

Panelists:

Carsten Karcher, Director for the European Asphalt Pavement Association

Matteo Pettinari, PhD., Specialist in Asphalt Materials and Flexible Pavements, Danish Road Directorate

Horst Erdlen, Manager Business Unit bei J. Rettenmaier & Söhne, Germany

11:50 a.m. - 12:00 p.m.

Speaker:

Richard Willis, Ph.D., Director of Pavement Engineering & Innovation, NAPA

12:00 p.m.