Webinar Series
The Deployment of Asphalt Pavement Technologies (DAPT) webinar series share current information and implementation aspects on topics including ground tire rubber, quality assurance, reclaimed asphalt shingles, and more. The webinars are moderated by FHWA and hosted by UNR with open access. Participants are encouraged to participate in Q&A and are eligible for professional development hours/continuing education units (PDH/CEU). The webinars are developed under the FHWA-UNR cooperative agreement, “Development and Deployment of Innovative Asphalt Pavement Technologies.”
DAPT webinars
Expected Outcomes
- Learn history and rationale behind AASHTO M 320 and AASHTO M 332.
- Learn differences, nomenclature differences, and improvements between AASHTO specifications.
- Consider possible implementation barriers and implementation steps.
Expected Outcomes
- Gain knowledge on pneumatic tire composition and get an overview of the waste tire issue and common recycle or reuse opportunities to include asphalt modification.
- Gain knowledge on the historical use of GTR in asphalt paving applications.
- Learn the different processing technologies used to modify asphalt binders and asphalt mixtures with GTR.
- Learn potentials for specification and testing of GTR modified asphalt binders and mixtures.
- Learn potential issues with use of GTR in modified asphalt binders and mixtures.
Expected Outcomes
- Learn to identify potential quality assurance engineering and acceptance risks.
- Gain knowledge in identifying techniques to mitigate quality assurance risks.
- Understand the principles based on a State DOT example.
Expected Outcomes
- Understanding of the impact of in-place density on asphalt pavement performance and life cycle cost.
- Awareness of density demonstration projects conducted across the U.S. to identify techniques and tools for improving density.
- Awareness of example State DOT in-place density specifications.
- Understanding of how average density and variability of density impact percent within limits (PWL).
- Awareness of changes related to density that State DOTs made to specifications and acceptance plans based on observations from demonstration projects.
Related Publications: Enhanced In-place Density: Demonstration Project One-Pager
Related Publications: Tech Brief 1: Density Demonstration Projects and Related Specifications
Related Publications: Tech Brief 2: Techniques and Tools for Improving Density
Webinar link: Demonstration Projects, Related Specifications, and Techniques for Improving Density
Expected Outcomes
- Recognizing that obstacles to achieving in-place mat density can occur.
- Awareness of potential obstacles to achieving in-place mat density associated with materials, pavement structure and construction operations.
- Recognition of practices for planning, design and mixture selection for improved joint performance.
- Identification of positive longitudinal joint construction practices and specifying and testing joint density.
Related Publications: Enhanced In-place Density: Demonstration Project One-Pager
Related Publications: Tech Brief 3: Overcoming Obstacles to Achieving Density
Related Publications: Tech Brief 4: Improving Longitudinal Joint Performance
Webinar: Overcoming Obstacles to Achieve Density and Improving Longitudinal Joint Density
Expected outcomes:
- Familiarity with techniques employed by State DOTs for using high RAP in asphalt mixtures.
- An understanding of the benefits State DOTs have observed with the high RAP use.
- Exposure to the criteria State DOTs use when allowing high RAP mixtures.
- Exposure to methods State DOTs use to get additional virgin asphalt binder in mixtures with high RAP contents.
- Awareness of what participating State DOTs identified as important implementation considerations for high RAP use.
Expected Outcomes
- To be determined.
Related Publications: A Field Review: Successful Practices and Lessons Learned When Using Reclaimed Asphalt Shingles in Asphalt Mixtures
Related Publications: Tech Brief: Practices and Lessons Learned When Using Reclaimed Asphalt Shingles in Asphalt Mixtures
Webinar registration link: DAPT Webinar on Practices and Lessons Learned When Using RAS in Asphalt Mixtures (May 19, 2022)