Engineering in Practice

Events and Activities

Webinar on Bridging the Micro and Macro Mechanical Behaviour of Geomaterials (Jointly organized by HKIE CVD and PolyU)

Technical Seminar:
Bridging the micro and macro mechanical behaviour of geomaterials using in situ tests under micro-CT

Date, time & venue

22 February 2023 (Wednesday), 17:00-18:00, Seminar via Zoom Meeting


Organized by

HKIE Civil Division and The Hong Kong Polytechnic University

Programme Highlight

Understanding the underlying physics and mechanisms responsible for the loss of stability of geomaterials is crucial to engineering design and mitigation of geohazards. We developed a novel in situ testing system under micro-CT that allows us to directly and continuously observe sample deformation at the microscopic scale while conducting loading tests. This provides crucial information for bridging the micro and macro mechanical behaviour of geomaterials. In this talk, I will present several examples of how we can utilize such a system to improve the understanding of the behaviours of granular materials and rock joints.






Free of Charge. 


Dr. Qi Zhao is an assistant professor at the Hong Kong Polytechnic University (PolyU) in the Department of Civil and Environmental Engineering. He obtained his PhD degree at the University of Toronto and his PhD dissertation was awarded the Leopold Müller Award by the Austrian Society for Geomechanics and the Dr. N.G.W. Cook Ph.D. Dissertation Award by the American Rock Mechanics Association (ARMA). He is an ARMA Future leader. His research interests cover several aspects of geomechanics and geophysics, including in situ rock physics experiments under X-ray micro-CT; application of machine learning to rock mechanics and geophysics problems; and shear behaviour of rock discontinuities.

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. Alan Yan via email: