High Content Recycled Asphalt Pavement up o 100% Recycling Webinar
- High Content Recycled Asphalt Pavement up to 100% Recycling
Dr. Martins Zaumanis
Dr. Nima Roohi Sefidmazgi
Asphalt is the most recycled material in the USA at a re-use rate of 99%. However, by average only about 20% reclaimed asphalt pavement (RAP) is used in a given mix design and large part of the RAP is degraded for use in lower value applications. The amount of RAP in asphalt mixtures can be significantly increased with the application of good RAP management practice, readily available modern production technologies and advanced knowledge of mix design. This presentation will summarize the state-of-the-art technology for increasing the amount of RAP in asphalt mixtures above 40%, and all the way up to 100%.
Dr. Martins Zaumanis is currently a project manager at the research management department of Latvian State Roads. Previously he has been employed for four years as a quality engineer in a private asphalt production and road construction company in Riga, Latvia. Dr. Zaumanis holds a professional engineer certificate in Latvia and has led several industrial and research projects funded by the European Union and Latvia. He completed his doctoral research entitled “100 % Recycled Hot Mix Asphalt and the Use of Rejuvenators” as a Fulbright scholar in Worcester Polytechnic Institute (WPI). Dr. Zaumanis also holds a master degree from Technical University of Denmark.
Dr. Nima Roohi Sefidmazgi is the Quality Control Manager at Green Asphalt LLC, working on design, production, and construction of asphalt pavements using 100% RAP material. Before joint Green Asphalt, he was a research associate at the Modified Asphalt Research Center at University of Wisconsin–Madison. Dr. Roohi’s doctoral research topic involved the development of a performance based mix design procedure through the application of imaging techniques to understand the mechanisms of aggregate structure formation during compaction. One of Dr. Roohi’s papers, titled “Effect of Particle Mobility on Aggregate Structure Formation”, received the Walter J. Emmons Award for the best paper presented at the 2013 Association of Asphalt Paving Technologists Annual Meeting. Dr. Roohi holds a doctoral degree and a master degree from University of Wisconsin–Madison.