Assistant Professor (Geotechnical Engineering)
Dr. J. Choo

BS, Seoul National University, South Korea
MS, Seoul National University, South Korea
PhD, Stanford University, USA

Office: HW 6-07
Phone: +852 2859 2673
Fax: +852 2559 5337
E-mail: jchoo@hku.hk
Homepage: https://www.choogroup.org

Teaching Activities Undergraduate CIVL2106: Soil Mechanics (First and Second Semesters)
CIVL4101: Capstone Design Project (First and Second Semesters)
CIVL4102: Project (First and Second Semesters)
Taught Postgraduate CIVL6004: Advanced Soil Mechanics (First Semester)
CIVL6078: Rock Mechanics and Rock Engineering (Second Semester)
Research Postgraduate CIVL8013: Computational Geomechanics (Second Semester)

Research Interests Physics-based and data-driven approaches to geotechnical problems in the areas of civil infrastructure, energy resources, and environmental sustainability. The cornerstone areas of research are: Mechanics of soils and rocks (e.g. fracture, damage, plasticity, large deformation)
Multiphysics of porous media (e.g. coupled thermo-hydro-mechanical-chemical processes)
Computational methods for geomechanics and multiphysics problems

Representative Research / Consultancy Projects Energy rock cavern systems in Hong Kong – Feasibility study through thermo-hydro-mechanical analysis (Sponsor: Environment and Conservation Fund, Hong Kong SAR Government)
3D cracking behavior of rocks under true triaxial stress conditions: Mechanistic modeling and investigations (Sponsor: General Research Fund, Research Grants Council of Hong Kong)
Waterless fracturing for unconventional energy production: Coupled geomechanics–flow modeling and investigations (Sponsor: Early Career Scheme, Research Grants Council of Hong Kong)

Representative Research / Consultancy Projects Member, Computational Geotechnics Committee, ASCE Geo-Institute
Member, Soil Properties and Modeling Committee, ASCE Geo-Institute
Member, Computational Mechanics Committee, ASCE Engineering Mechanics Institute
Member, Poromechanics Committee, ASCE Engineering Mechanics Institute
Member, Numerical Methods Committee (TC103), ISSMGE
Member, Geomechanics from Micro to Macro Committee (TC105), ISSMGE
Member, Energy Geotechnics Committee (TC308), ISSMGE

10 Selected Representative Publications Choo, J., Semnani, S.J., and White, J.A. (2021) An anisotropic viscoplasticity model for shale based on layered microstructure homogenization. International Journal for Numerical and Analytical Methods in Geomechanics. doi:10.1002/nag.3176.
Fei, F. and Choo, J. (2020) A phase-field of frictional shear fracture in geologic materials. Computer Methods in Applied Mechanics and Engineering, 369, 113265.
Zhao, Y. and Choo, J. (2020) Stabilized material point methods for coupled large deformation and fluid flow in porous materials. Computer Methods in Applied Mechanics and Engineering, 362, 112742.
Fei, F. and Choo, J. (2020) A phase-field method for modeling cracks with frictional contact. International Journal for Numerical Methods in Engineering, 121(4), 740–762.
Choo, J. (2018) Large deformation poromechanics with local mass conservation: An enriched Galerkin finite element framework. International Journal for Numerical Methods in Engineering, 116(1), 66–90.
Choo, J. and Lee, S. (2018) Enriched Galerkin finite elements for coupled poromechanics with local mass conservation. Computer Methods in Applied Mechanics and Engineering, 341, 311–332.
Choo, J. and Sun, W. (2018) "Cracking and damage from crystallization in pores: Coupled chemo-hydro- mechanics and phase-field modeling." Computer Methods in Applied Mechanics and Engineering, 335, 347–379.
Choo, J. and Sun, W. (2018) "Coupled phase-field and plasticity modeling of geological materials: From brittle fracture to ductile flow." Computer Methods in Applied Mechanics and Engineering, 330, 1–32.
Borja, R.I. and Choo, J. (2016) “Cam-Clay plasticity, Part VIII: A constitutive framework for porous materials with evolving internal structure.” Computer Methods in Applied Mechanics and Engineering, 309, 653–679.
Choo, J., White, J.A., and Borja, R.I. (2016) "Hydromechanical modeling of unsaturated flow in double porosity media." International Journal of Geomechanics, 16(6), D**.

Others For more information of Dr. J. Choo , please visit https://www.choogroup.org.