AAPA & Chinese Pavement Summit
Chair: Dr. Jeffrey Lee, Australian Road Research Board
Time: July 23 afternoon
AAPA IKT Speakers:
Carlos Rial (Affiliation: AAPA, Topic: Safer Roads for Australia)
Erik Denneman (Affiliation: AAPA, Topic: The Australian drive for more rubber on the road)
Tony Wehl (Affiliation: RPQ, Topic: Public private interface in Australia)
Jeffrey Lee (Affiliation: ARRB, Topic: Evaluation of in situ stiffness measurements using NDT equipment)
Xu Jian (Affiliation: RIOH, Topic: Development of expressway pavement maintenance technology in China)
Chunying Wu (Affiliation: JSTI Group, Topic: Characteristics of foam warm-mix asphalt (FWMA) mixture and its application in China)
Wei Jincheng (Affiliation: Shandong Transportation Institute, Topic: Long Term Observation of Perpetual Pavement Response)
AAPA IKT Speakers:
1) Carlos Rial, Chief Executive Officer of Australian Asphalt Pavement Association (AAPA).
Carlos Rial, with over 20 years in the roads industry Carlos currently leads the Australian Asphalt Pavement Association (AAPA), as the national Chief Executive Officer. AAPA has all Australian Government State Road Authorities, Local government and private sector roads construction companies as members. In AAPA Carlos leads a highly professional team that works with its members to enhance road worker safety, drive sustainability and continually innovate in road engineering practice. Formerly a leader within the Australian Road Research Board (ARRB), Carlos created and led in partnership with government one of the biggest roads pavements research programs in Australia. As a former Director in government Carlos has driven change in roads planning, safety, asset management and program delivery efficiency.
Summary: Carlos will be presenting about the latest developments in Road Safety. The presentation is based on his learnings in roads safety going back to the mid 1990's where he Chaired the Queensland Safer Roads Sooner and BlackSpot Committees and his understanding of the value of proactively addressing road safety risk, in addition to reacting to road safety Blackspots. Carlos is now extending this focus to seeking improved safety of road workers who deliver the infrastructure that connects our communities. Safety at road sites is the number one priority for the Australian Asphalt Pavement Association.
2) Erik Denneman, Ph.D. Director (Technology & Leadership) of AAPA
Dr. Denneman (PhD, CPEng, RPEQ) supports the flexible pavement industry in the implementation of innovative pavement solutions. Before joining AAPA in July 2016, Erik led the ARRB Pavement Technology and Asset Management team in Brisbane. He specialises in performance-based design and specification of bituminous materials, and the development of pavement design models. Erik has worked in the Netherlands, South Africa, the USA, and since 2012 Australia.
Summary: Erik will be delivering a presentation on the Australian drive for more rubber on the road. Millions of tyres reach their end-of-life every year in Australia. When expressed in equivalent passenger units (EPU) to correct for the weight difference in tyres used by different vehicle types, two EPUs are scrapped per Australian per year. Rubber and carbon black represent approximately 70% of the weight of a tyre. A high application destination for these materials when recycled is as crumb rubber modifier (CRM) in bitumen used in road construction. CRM binder can be used to increase the cracking resistance and durability of both asphalt and spray seals. CRM binder is ideally suited for use in open graded asphalt (OGA). The higher film thickness that can be achieved without binder drain down, on account of the high viscosity of the CRM binder, offers significant durability benefits for OGA. This presentation describes the recent efforts in Australia to widen the use of CRM binders in asphalt and spray seal.
3) Tony Wehl, Chief Executive Officer of RPQ Pty Ltd
Tony Wehl moved from Victoria to Queensland over 30 years ago, with the goal of establishing and building a profiling company, today known as RPQ. Starting his career as an operator on a profiling machine in 1980, it was early on that Tony realised the opportunities available in the industry in Queensland and so it was, RPQ became the state pioneers in road profiling and milling. Tony and his business partner Steve Graham have since continued to build RPQ into a full spectrum road construction and maintenance company, offering profiling, asphalt, spray sealing, civil, workshop and equipment hire services. Tony has empowered many of the best industry professionals at RPQ, and firmly believes it is their skill and expertise and the level of service that he demands that create the success and backbone of RPQ. Tony is the Chairman of the Shenzen-Brisbane sister city relationship.
Summary: Tony’s presentation will be about the public private interface in Australia. Different forms of tendering processes will be discussed. He will also provide a contractor’s perspective on the role of the Australian Asphalt Pavement Association (AAPA) in the Technological advancement of the industry. Finally, Tony will touch on recent developments in the use of reclaimed asphalt pavement in Australia.
4) Jeffrey Lee, Ph.D., Principal Professional of Australian Road Research Board (ARRB)
Dr. Jeffrey Lee is currently a principal engineer at the Australian Road Research Board (ARRB) responsible for the management and delivery of research projects for the Department of Transport and Main Roads, and other members of the Australian Road Authorities. He has been providing advisory services to road authorities in the areas of asphalt pavement designs, non-destructive evaluation, and increase use of recycled material for pavement construction. He has also provided regular training through workshops and webinars at both national and state-level events.
In his previous role, he was an engineering consultant with experience in the design/rehabilitation and condition assessments of flexible and concrete pavements for highways and airports. He has worked on many different road infrastructure projects in Australia and United States.
Jeffrey is also active in the international engineering community. He has been a peer reviewer for different journals published by the American Society of Civil Engineers (ASCE) and American Society for Testing and Materials (ASTM) covering different areas of pavement designs and non-destructive testing techniques. More recently, he is the chief editor for an ASCE Geotechnical Special Publication (GSP) and Co-Chair of the Technical Organizing Committee for the upcoming GeoChina 2018 international conference.
Summary: Jeffrey’s presentation will be about the evaluation of in situ stiffness measurements using next-generation non-destructive testing (NDT) equipment. Pavement and earthwork layers are often represented by Young’s modulus (E) in numerical modeling. Yet, the stiffness is not commonly measured in the field. This presentation compares stiffness measurement collected in field trials and compare with results from other traditional assessment methods. The study will include analysis of field data collected from Falling Weight Deflectometer, Light Falling Weight Deflectometer, Clegg Hammer...etc. Additional analysis of the raw data is also presented to improve the prediction of in situ stiffness.
5) Xu Jian, Ph.D., Professor at the Research Institute of Highway (RIOH), China
Xu Jian, Ph.D., professor of Research Institute of Highway(RIOH), secretary-general of Branch of Road Engineering, China Highway and Transportation Society(CHTS), and secretary-general of Branch of Material Recycling for Road Engineering, China Association of Circular Economy(CACE). His major research interests include pavement maintenance technologies such as micro-surfacing and pavement recycling, and energy-saving and emission-reduction technologies such as warm mixture.
He was involved in many of MOT specifications such as Technical Specifications for Highway Asphalt Pavement Recycling, Quality Inspection and Evaluation Standards for Highway Maintenance Engineering, technical guidelines for micro-surfacing and slurry seal. He undertook or involved in more than 40 various levels of research projects, some of which listed in the national science and technology support program and the international scientific and technological cooperation plans. He has published over 50 papers and 7 scholarly monographs, obtained 3 patents for invention, and achieved 7 ministerial level academic rewards.
Summary: Since the beginning of this century, China's highway development has entered the stage of "maintenance sharing equal importance as new infrastructure construction", and the asphalt pavement maintenance technology has been developing rapidly. This presentation will cover:
- The development process of expressway pavement maintenance technology of China in recent 20 years, including the preventive maintenance concept, maintenance technologies such as micro-surfacing, slurry seal, fog seal, ultra-thin overlay, pavement recycling, melting ice and snow technology.
- The status of research, application, specifications of these technologies will be summarized, the demand for pavement maintenance and the future development trends of the road maintenance technologies will be analyzed.
6) Chunying Wu, Ph.D., Deputy Chief Engineer of JSTI Group
Dr. Wu is a deputy chief engineer in the Division of Road Engineering and Research of JSTI Group. She received PHD of solid mechanics from Shanghai Jiaotong University. Dr.Wu has more than 10 years’ experiences in theoretical study and engineering practice, particularly in the areas of the application of waste recourse in highway, asphalt pavement material and structure, asphalt pavement maintenance and technology of asphalt pavement on concrete bridge deck.
Dr.Wu has also directed and completed more than 20 scientific and technological projects, such as ‘research on maintenance technology and decision support system of highway in Jiangsu province’. She has published more than 10 papers, including 1 SCI and 3 EI. Besides, the monograph ‘New Materials and New Technology Applied in Guizhou Province Highway Asphalt Pavements’ has been published with Wu as the first author. In addition, 11 invention patents and 9 utility model patents have been authorized, and 2 local standards of Jiangsu Province have been worked out.
Summary: Chunying’s presentation will be about the characteristics of foam warm-mix asphalt (FWMA) mixture and its application in China. The mixture design of FWMA will be discussed in this study and besides the mixture performance of FWMA will be compared with that of hot mix asphalt. This presentation also involves the construction technology and economic and environmental assessment of FWMA.
7) Wei Jincheng, Ph.D., Professor at the Shandong Transportation Institute, China
Dr. Wei’s major research interests include long-life asphalt pavement structures and materials, pavement structure damage detection and diagnosis technology and pavement material recycling technology, etc. He once undertaken or involved in more than 20 research projects at enterprise, provincial and national levels and involved in the research on parameters and fatigue damage models for materials stabilized with inorganic binders during developing the Specifications for Design of Highway Asphalt Pavement (JTG D50-2017). He has published over 30 papers and obtained more than 20 patents for invention and 2 software copyrights. He has also received and achieved more than 10 rewards and results at national level and provincial and ministerial level.
Summary: Jincheng’s presentation will be about the research and application of perpetual pavement in China. A perpetual pavement trial road was constructed in 2005 to investigate the suitability of the perpetual pavement concept for heavy traffic loads pavement in Shandong province of China. The experiment involved the construction of five flexible pavement structures on a new alignment on the Beijing to Shanghai Expressway about 250 miles southeast of Beijing. To verify the approach of designing perpetual pavements based on an endurance strain limit, the five pavements were instrumented with gages for measuring the strains at the bottom of the asphalt base layers, the vertical stress on top of subgrade. After more than 10 years of long-term performance observation, finding of the perpetual pavement test road and the development of pavement structures of Shandong Province will be introduced.