Consortium for Asphalt Pavement Technologies
Seminar "Hot Mix Asphalt Recycling Design and Production Key Control Points" presented by Dr. John D'Angelo
Wednesday, 28 February 2018, 3-5 p.m.
Hilton, Qamar meeting room, Doha, Qatar
Please RSVP here
Launch of the Asphalt Pavement Consortium and Signing of the MoU with Ashghal
11 December 2017
10 a.m. - 1 p.m.
Texas A&M Engineering Building
About the Consortium
The State of Qatar is investing substantially in the construction of its road infrastructure. Pavements in Qatar are constructed using surfaces comprising asphalt concrete mixtures. The performance of asphalt pavements is impacted by several factors but primarily by the properties of the construction materials, pavement design, and construction practices. Pavement failures adversely impact the public through delays, compromised safety, and high maintenance costs. Therefore, the development and implementation of new pavement technologies (new and advanced materials, superior analytical tools, and improved experimental methods will have a key economic impact on the State of Qatar. In addition, it is essential to train a qualified workforce and ensure that workers have up-to-date knowledge regarding road technologies and specifications.
The objectives of the Consortium for Asphalt Pavement Technologies are to:
• Conduct research studies and technology implementation in various areas related to asphalt pavements (i.e., materials properties, recycling, specifications, design, and construction);
• Be a resource for the industry and agencies in Qatar that are involved in road design and construction;
• Organize the Asphalt Pavement Forum (APF) as a resource for presentations and discussions on technical developments; and
• Provide training and disseminate information pertaining to asphalt pavements.
The consortium will cover the following major areas:
• Characterization of pavement materials and layers,
• Asphalt mixture design,
• Material specifications,
• Quality management systems,
• Structural design of asphalt pavements, and
• Performance-based specifications and contracting approaches.
The consortium will be directed by Dr. Eyad Masad and Dr. Dallas Little from Texas A&M University. Dr. Masad and Dr. Little have more than 70 years of combined experience in research, training, technology development, and professional consultancy in various areas of asphalt pavements. In particular, they have performed significant research in asphalt pavements in the State of Qatar during the past decade. Dr. Masad and Dr. Little are members of international committees and organizations that deal with topics such as subgrade improvements, pavement analysis and design, performance of surface layers, and materials specifications. The consortium will also involve highly qualified researchers and graduate students.
The consortium’s director and co-director will manage its research and training programs and develop its annual plan, which will be presented to the Steering Committee for review and approval. The Steering Committee consists of the associate dean for research of Texas A&M at Qatar, two representatives from the Public Works Authority, and one representative from each of the consortium members. A consortium member is a company that is operating in the State of Qatar in an area directly related to asphalt pavements. All the research and technology development findings that result from consortium funding will be disseminated publicly. However, individual companies or agencies can establish agreements to conduct proprietary research or training.
A consortium member will pay an annual membership fee of $25,000, join the steering committee, and receive discounted rates for registration fees in training courses. Membership benefits include:
• A voting member on the steering committee,
• Attendance of periodic meetings that discuss technical developments,
• 20 percent discount for registration in training courses, workshops, and conferences, and
• Reprints of consortium’s technical reports.
During the past 10 years, the CAPT researchers worked on various topics related to the properties and performance of asphalt pavements in Qatar and the region. These projects included:
- Development and implementation of Warm Asphalt Mix in Qatar
- Skid Resistance of Asphalt Pavements in Relationship to Pavement Temperature
- Implementation of Mechanistic-Empirical Design Methods
- Laboratory and Field Performance of various mixtures and pavement designs in Qatar
- Macrostructural Characterization of Unmodified and Modified Binders Subjected to different Aging and Moisture Levels
- Development of Novel Methods for the Characterization of Aging Using Core Nuclear Magnetic Resonance Technology
- Stabilization of Subgrade Layers in Asphalt Pavements
The group have delivered many short courses and organized workshops for the industry including:
- Asphalt Pavement Analysis and Design
- Volumetric Asphalt Mix Analysis and Design
- Superpave Mix Design for Lab Engineers
- Asphalt Binder Testing
- Performance Testing for Asphalt Mixtures (3 days of course instruction and laboratory work)
- Quality Control and Field Management of Asphalt Pavement Construction
- Construction of Pavement Unbound and Stabilized Layers
For more information, contact CAPT@qatar.tamu.edu.
Dr. Srinath Iyengar
Dr. Srinath Iyengar is an associate research scientist at Texas A&M University at Qatar (TAMUQ). Dr. Iyengar obtained his PhD in Geo-Environmental Engineering from the University of Cambridge in the UK. He holds a bachelor’s in Construction Engineering and a master’s in Environmental Engineering from University of Mumbai. Since joining TAMUQ in 2009, Dr. Iyengar has been actively involved in several research projects investigating defined polymers for pavement subgrade stabilization, behavior of concrete subjected to cryogenic freezing for LNG storage applications and other advanced construction materials which, have led to several peer reviewed journal publications.
Dr. Iyengar’s previous multi-disciplinary research endeavors encompassed aspects of cement and concrete technology, material characterization (including Scanning electron microscopy, energy dispersive x-ray analysis [EDS], x-ray diffraction and x-ray fluorescence) and geo-environmental engineering (stabilization/solidification techniques). His other research interests include:
- Novel techniques for ground improvement
- Innovative infrastructure materials
Dr. Ilaria Menapace
Dr. Ilaria Menapace is currently an Assistant Research Scientist in Texas A&M University at Qatar (TAMUQ). She obtained her PhD at the Technische Universität Darmstadt, Germany, in Materials Science. She holds a Bachelor degree in Industrial Engineering and a Master degree in Materials Engineering from the Università degli Studi di Trento, Italy. Dr. Menapace joined TAMUQ in 2013 and she was previously in a Post-Doctoral position funded by the QNRF Post-Doctoral Research Award (PDRA). The focus of her research is characterization of asphalt binders:
- Atomic Force Microscopy characterization of unaged and aged HMA and WMA asphalt binders.
- Fundamental research on asphalt binders, molecular mobility and microstructure.
- Development of a new aging protocol for asphalt binders using an Accelerated Weathering Tester with and without presence of moisture.
- Investigation of the microstructure and rheological properties of recycled and rejuvenated asphalt binders.
- Development of a new method to estimate aging and rejuvenation on asphalt mix samples using Low Field Nuclear Magnetic Resonance.
- Investigation of chemical composition of aged asphalt binders with X-ray Photoelectron Spectroscopy and Fourier Transform Infra-Red.
Dr. Reginald Kogbara
Dr. Reginald Kogbara is an Assistant Research Scientist at Texas A&M University at Qatar. He holds a PhD in Engineering (Geotechnical & Environmental) from the University of Cambridge, UK, and a Bachelor of Technology degree in Agricultural & Environmental Engineering from the Rivers State University of Science & Technology, Nigeria. He has several refereed publications in the following research areas:
- Civil engineering materials: Concrete for severe environments and durability of concrete structures – mechanical and thermal behavior of concrete at cryogenic temperatures for LNG storage; characterization and microstructural analyses of materials (scanning electron microscopy, x-ray diffraction and x-ray fluorescence); non-destructive evaluation (acoustic emission, nuclear magnetic resonance and x-ray computed tomography); and skid resistance of asphalt pavements.
- Geo-environmental engineering: Stabilization/solidification of hazardous wastes and contaminated soils using different cementitious materials, and other treatment technologies; and beneficial reuse of industrial wastes and materials as resources.