The implementation of Stone Matrix Asphalt (SMA) technology in the United States was a result of the 1990 European Asphalt Study Tour. Since its early beginnings in this country, NCAT has been actively involved in conducting much of the research that has led to the development of SMA as the premier asphalt mix of choice for use on high traffic volume facilities where a durable, rut-resistant, and long-lasting pavement is needed.

New Generation Open-Graded Friction Courses (OGFC) are being constructed based on European technology and research being performed at NCAT. OGFC mixtures have long been noted for reduction in backspray, improved wet weather visibility of traffic stripes, and reduced headlight glare. These mixes are also gaining wide appeal due to noise reduction characteristics. Construction of OGFC mixtures is considerably more cost-effective than the typical cost of $1 million per linear mile for noise barrier walls, especially since the effectiveness of barrier walls is questionable.

Goals and Objectives

The purpose of this 1 1/2 day workshop is to provide a basic understanding of SMA and New Generation OGFC mixtures. Upon completion, attendees will have a knowledge of the state-of-the-practice for materials, mix design, construction, and specifications needed for a successful project.

Program Content

This workshop will consist of 1 1/2 days of intensive lectures and discussion involving all phases of SMA and OGFC construction. An informal agenda has been developed as follows, but may be modified to meet the needs of individual agencies or organizations.

I. Introduction
II. Mix Design

• A. Materials Selection
• B. Gradation
• C. Design Process

III. Production

• A. Equipment for batch and drum plants
• B. QC/QA

IV. Construction

• A. Placement
• B. Compaction

V. Specifications

VI. Other Issues

Materials

Each participant will be provided with course notes and will leave the course with materials needed for general reference when the need arises in practice.

Fees: To be negotiated

The fee for conducting the workshop is per agency or organization. The fee will be negotiated on a case-by-case basis. The fee will include instructor's transportation and per diem costs, course materials, and reference information.

Southeastern Superpave Center members may be eligible for special funding to cover workshop costs. Please contact Doug Hanson or Allen Cooley at NCAT at (334) 844-6228 for more details.

Instructors

The staff of highly qualified instructors at NCAT will be responsible for conducting the workshop. The teaching staff will consist of industry professionals such as Don Watson, Brian Prowell, and Randy West.

Date, Time, and Location

As requested

Invitations

NCAT will accept invitations from any agency or organization involved in the HMA paving industry. To get the most out of the workshop, it is recommended that participants have a general knowledge of materials used in HMA mixtures and experience in HMA mix design or construction.

Application Process

If you are interested in hosting this workshop, please complete the application form and return it to NCAT. Additional information or inquires should be directed to:

Don Watson
National Center for Asphalt Technology
277 Technology Park
Auburn, AL 36830, USA
Phone: (334) 844-6228
Fax: (334) 844-6248
Email: dwatson@eng.auburn.edu