Nurturing the Young –

Innovation for Sustainability

Events and Activities

Recycling of Waste Tyre Rubber into Sustainable Low-Noise Rubberized Asphalt Pavement

Technical Seminar:

Recycling of Waste Tyre Rubber into Sustainable Low-Noise Rubberized Asphalt Pavement

Date, time & venue

17th November 2021 (Wednesday), 17:00-18:00, Seminar via Zoom Meeting


Organized by

HKIE Civil Division and The Hong Kong Polytechnic University


Programme Highlight

Asphalt rubber (AR), which is composed of raw asphalt binder and at least 15% of waste tyre rubber modifier, is often considered a sustainable paving material because of its various benefits, such as recycling waste tyres, enhancing pavement performance, and reducing tyre-road noise. However, AR also faces the concern of higher emission and energy consumption during construction, because its high viscosity requires high construction temperature. This webinar will start with the basics of different approaches/technologies to recycle waste tyres into asphalt pavement, followed by more than ten years’ research and development experience in Hong Kong in developing the durable low-noise rubberized asphalt pavement which also has low construction emission. In the end, some recent study on recycling waste plastics into asphalt pavement will be briefly introduced.






Free of Charge.


Dr. Zhen Leng

Dr. Zhen Leng is an Associate Professor, the Director of the Road Research Laboratory, and the Associate Director of the Research Center for Resources Engineering towards Carbon Neutrality at The Hong Kong Polytechnic University. He received his PhD degree in Civil Engineering from University of Illinois at Urbana-Champaign. His research interests mainly include sustainable and smart pavement materials and technologies, and nondestructive evaluation of transportation infrastructure. He currently serves as the Vice President of Academy of Pavement Science and Engineering, the President-elect of the ASCE Greater China Section, and the Chair of the Asphalt Pavement Discipline of World Transport Convention. He is also an Editor-in-Chief of Journal of Cleaner Materials, an Executive Editor of Journal of Cleaner Production, and an Associate Editor of ASCE Journal of Materials in Civil Engineering, and Journal of Transportation Engineering, Part B: Pavements. 

Registration & Enquiries

Please complete the on-line registration at The number of participants is limited to 500 on a first-come-first served basis. Priority will be given to members of the Civil Division.

Email registration will not be accepted. Successful applicants will be informed by email and provided a link to the Zoom Meeting at the designated time slot. Participants need to sign in using the membership no. and name entered at the time of registration. A CPD certificate will be issued 3 weeks after the seminar based on this membership no. and name.

For enquiries, please contact Mr. Vincent Tam via email: