NAPA Webinars - National Asphalt Pavement Association

Prepare and Protect: A Risk Management Series - Sport Court Pavement Construction

Speaker: Tim R. Murphy, P.E., President, Murphy Pavement Technology

Date: December 7, 2020 2:00 - 3:30 PM Eastern Time (US and Canada)

Description: Ensuring the most appropriate asphalt substrates are designed, manufactured, and installed for tennis and track surfaces. This session will present the most important asphalt (aka Asphalt 101) needs so that the asphalt suppliers and installers know what to promote to architects and engineers. The American Sports Builders Association (ASBA) Asphalt Guidelines developed by Tim Murphy, President of Murphy Pavement Technology shall be discussed throughout.

Takeaways:
Within these sessions we will explore needed asphalt mixture design, production, and construction specifications and techniques to follow in order to:
1. Provide positive drainage to keep moisture away from the asphalt and coating thus protecting the entire system of products.
2. Ensure acceptable asphalt installation specific to asphalt ingredients, compaction, and smoothness.
3. Provide for a surface that will accept and perform when coated for tennis courts and running surfaces.
4. Avoid failures and ensure successes by following the recommended asphalt principles.
5. Understand what causes failures and how to avoid them in the future.
6. Discuss coating systems, cure time, and time of year installation practices.
7. Develop a list of 'must haves' specific to asphalt for participants as they work with architects worldwide.

Professional engineers (PEs) who register and attend the entire webinar as an individual will be awarded 1.5 Professional Development Hours (PDHs). APA/NAPA’s webinar program awards PDH credits only to the registered individual, and not to other members of a group that view the webinar together. To be eligible for the credits, individuals must remain signed in for the entire webinar, including for any question and answer session following the presentations.

APA/NAPA will report credits earned to the Registered Continuing Education Program (RCEP). Complaints about registered providers may be sent to RCEP, 1015 15th Street, NW, 8th Floor, Washington, D.C., 20005.

Two Decades of Positive Thinlay Performance at the NCAT Pavement Test Track

Speaker: Dr. R. Buzz Powell, P.E., Associate Director & Research Professor, National Center for Ashalt Technology

Date: January 20, 2021 3:00 - 4:00 PM Eastern Time (US and Canada)

Description: The NCAT Pavement Test Track has been used by state DOTs to execute innovative, relevant, and implementable research for over 20 years. Thinlays have played an important part in the Track research program since the 2003 (2nd 3-year) research cycle. The role of thinlays was expanded in 2012 in support of off-Track pavement preservation research. Since that time, thinlays have been placed on the Track, on off-Track southern (low and high traffic) pavement preservation sections, and on northern (low and high traffic) pavement preservation sections in support of the NCAT+MnROAD Pavement Research Partnership. Properly designed and well built thinlays have proven themselves to be both rut and crack resistant, and have provided a riding surface with a safe level of surface friction. The positive history with thinlays at the NCAT Pavement Test Track and within the NCAT+MnROAD Pavement Research Partnership is reviewed in this presentation.

Takeaways:

1. Thinlays are more versatile than many people believe
2. Thinlays can be both crack and rut resistant
3. Balanced mix design (BMD) practices can be used to ensure good thinlay performance.