
Overview
Background
Johnny Ho joined School of Civil Engineering, The University of Queensland (UQ) in Sep 2013 as a Senior Lecturer. Before joining UQ, Dr Ho has been working in both Hong Kong and Brisbane offices of Arup from 2003 to 2007 on some large scale infrastructure projects such as The Stonecutters Bridge in Hong Kong and Ipswich Motorway Upgrade (Wacol to Darra) in Queensland, Australia. In Sep 2007, he joined the Department of Civil Engineering, The University of Hong Kong as an Assistant Professor. Dr Ho’s research interests are on scientific study on dilatancy of High-flowability and -perfromance concrete due to poly-carboxylate based superplasticizers and its application to concrete-filled steel tubular (CFST) and FRP-confined concrete structures. He has developed discrete element modelling of binary packing of 2D discs and 3D spheres using Python and C++ coding. This model, combined with the rheological model of superplasticized concrete, will contribute a more scientific concrete mix design method for low-carbon-footprint, low cost and high performance concrete (HPC) based on wet packing modelling of particles in the fresh concrete with incorporation of multi-sized fillers. Dr Ho is also interested in applying the low-carbon-footprint high-performance concrete to single- and double-skinned concrete-filled-steel-tube and FRP-confined columns with external steel confinement and/or internal concrete expansive agent.
Dr Ho has published over 100 SCI journal papers and 40 conference papers. Two of his journal papers have been awarded the Transactions Prizes in respectively 2004 and 2005 presented by The Hong Kong Institution of Engineers. In 2011, Dr Ho was awarded the Best Presenter in the 11th International Conference on Concrete Engineering and Technology in Malaysia. In 2010, one of his students was awarded The Hong Kong Institution of Engineers Outstanding Paper Award for Young Engineers/Researchers. Dr Ho has also been very successful in obtaining research and teaching grants, including a HK$1.2m General Research Fund (GRF) grant in Hong Kong in 2010, an A$286K ARC Discovery Project (DP) grant in 2015 and a CNY$600K National Science Foundation (NSF) Grant in 2020 in PRC. Dr Ho has also been very successful in supervision of undergraduate student in performing their final year projects/thesis. In 2012 and 2013, two of his Final Year Project students were given the Merit Awards of the ICE (Institution of Civil Engineers) Hong Kong Graduates and Students Papers Competition for the outstanding project work. In 2017, his thesis project student were awarded The HKIE Outstanding Paper Award for Young Engineers/Researchers by the Hong Kong Institution of Engineers and was awarded HKD$5,000 cash prize and a return ticket to and accomodation in Hong Kong for presenting his awarded paper.
Dr Ho is a passionate teacher and one of the most popular lecturers amongst the students. He is responsbile for teaching a broad range of structural engineering courses, which consist of Reinforced concrete design as per EC2, AS3600 and Hong Kong Code, Prestressed concrete design as per EC2 and AS3600, Structural analysis, Finite element method, Design of steel structures as per AS4100, Structual fire engineering. Dr Ho obtained very high teaching (92%) and course (85%) evaluation scores in every semester since 2013 and was awarded the "Most Effective Teacher by Dean’s Commendation Students" in the Faculty of EAIT, UQ, in 2017, 2018, 2020, 2021 and 2022.
Availability
- Associate Professor Johnny Ho is:
- Available for supervision
Fields of research
Qualifications
- Doctor of Philosophy, University of Hong Kong
Research interests
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low-carbon-footprint and high-performance concrete using fillers
Study of the effect of pozzolanic and inert fillers on the strength, workability and durability performance of concrete
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Stress-strain model of confined concrete with silica fume
Study of the effect of adding silica fume on the wet packing density and the constitutive modelling of confined concrete
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Rheology of cement powder paste
Investigation of the dilatancy swerve in superplasticized cement powder paste and mortar
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Packing density physical modelling
Coding developing of modelling packing of multi-sized spheres
Research impacts
To respond to global warming, my research advocates the use of low-carbon footprint high-performance concrete by designing scientifically concrete mixes using theory of packing density, filler technology and concrete/mortar/paste rheometry. The application of this type of concrete in hybrid-confined concrete-filled-steel-tube and FRP-confined conrete columns not only can improve the structural performance and safety of buildings and infrastructures, but also cut down the carbon footprint of the whole construction industry that offers Australia a more sustainable living environment. Theoretical dsicrete element models about the packing of binary 2D discs and 3D spherical particles are produced that will help the future investiagtion of the effect of particle packing in the design mix of concrete and hence developing method for concrete mix design using optimized particle size distribution.
Works
Search Professor Johnny Ho’s works on UQ eSpace
2004
Journal Article
Minimum flexural ductility design of high-strength concrete beams
Ho, J. C. M., Kwan, A. K. H. and Pam, H. J. (2004). Minimum flexural ductility design of high-strength concrete beams. Magazine of Concrete Research, 56 (1), 13-22. doi: 10.1680/macr.56.1.13.36291
2004
Journal Article
Extent of critical region and limited ductility design of high-strength reinforced concrete columns for hong kong practice
Ho J.C.M. and Pam H.J. (2004). Extent of critical region and limited ductility design of high-strength reinforced concrete columns for hong kong practice. HKIE Transactions Hong Kong Institution of Engineers, 11 (3), 17-28.
2003
Journal Article
Inelastic design of low-axially loaded high-strength reinforced concrete columns
Ho, J. C. M. and Pam, H. J. (2003). Inelastic design of low-axially loaded high-strength reinforced concrete columns. Engineering Structures, 25 (8), 1083-1096. doi: 10.1016/S0141-0296(03)00050-6
2003
Journal Article
Theoretical analysis of post-peak flexural behaviour of normal- and high-strength concrete beams
Ho, J. C. M., Kwan, A. K. H. and Pam, H. J. (2003). Theoretical analysis of post-peak flexural behaviour of normal- and high-strength concrete beams. Structural Design of Tall and Special Buildings, 12 (2), 109-125. doi: 10.1002/tal.216
2003
Journal Article
Influence of transverse steel configuration on post-elastic behaviour of high-strength reinforced concrete columns
Ho J.C.M. and Pam H.J. (2003). Influence of transverse steel configuration on post-elastic behaviour of high-strength reinforced concrete columns. HKIE Transactions Hong Kong Institution of Engineers, 10 (2), 1-9.
2002
Journal Article
Flexural strength and ductility performance of high-strength reinforced concrete columns
Ho J.C.M. and Pam H.J. (2002). Flexural strength and ductility performance of high-strength reinforced concrete columns. Structural Engineer, 80 (23-24), 26-34.
2002
Journal Article
Ultimate concrete strain and equivalent rectangular stress block for design of high-strength concrete beams
Ho J.C.M., Kwan A.K.H. and Pam H.J. (2002). Ultimate concrete strain and equivalent rectangular stress block for design of high-strength concrete beams. Structural Engineer, 80 (16), 26-32.
2002
Journal Article
Flexural strength and ductility of reinforced concrete beams
Kwan A.K.H., Ho J.C.M. and Pam H.J. (2002). Flexural strength and ductility of reinforced concrete beams. Proceedings of the Institution of Civil Engineers: Structures and Buildings, 152 (4), 361-369. doi: 10.1680/stbu.152.4.361.40817
2002
Journal Article
Effects of using high-strength concrete on flexural ductility of reinforced concrete beams
Ho J.C.M., Kwan A.K.H. and Pam H.J. (2002). Effects of using high-strength concrete on flexural ductility of reinforced concrete beams. HKIE Transactions Hong Kong Institution of Engineers, 9 (1), 14-21.
2001
Journal Article
Post-peak behavior and flexural ductility of doubly reinforced normal- and high-strength concrete beams
Pam H.J., Kwan A.K.H. and Ho J.C.M. (2001). Post-peak behavior and flexural ductility of doubly reinforced normal- and high-strength concrete beams. Structural Engineering and Mechanics, 12 (5), 459-474.
2001
Journal Article
Flexural strength enhancement of confined reinforced concrete columns
Pam H.J. and Ho J.C.M. (2001). Flexural strength enhancement of confined reinforced concrete columns. Proceedings of the Institution of Civil Engineers: Structures and Buildings, 146 (4), 363-370. doi: 10.1680/stbu.146.4.363.45460
Supervision
Availability
- Associate Professor Johnny Ho is:
- Available for supervision
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Available projects
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Rheology of cement powder paste/mortar and/or concrete
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Packing density model of multi-sized spheres
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Concrete-filled-steel-tube column with hybrid confinement
Supervision history
Completed supervision
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2022
Doctor Philosophy
Fire Performance of High Strength Concrete using Novel Fire Testing
Associate Advisor
Other advisors: Dr Cristian Maluk, Associate Professor Vinh Dao
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2021
Master Philosophy
The Effect of Self-Consolidating Concrete on the Shear Behaviour of Concrete Beam Elements
Associate Advisor
Other advisors: Associate Professor Liza O'Moore
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2020
Doctor Philosophy
Fillers' application in high-performance Concrete
Associate Advisor
Other advisors: Associate Professor Vinh Dao
Media
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