
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
2017
Journal Article
Finite element analysis of concrete-filled steel tube (CFST) columns with circular sections under eccentric load
Ouyang, Y., Kwan, A. K. H., Lo, S. H. and Ho, J. C. M. (2017). Finite element analysis of concrete-filled steel tube (CFST) columns with circular sections under eccentric load. Engineering Structures, 148, 387-398. doi: 10.1016/j.engstruct.2017.06.064
2017
Journal Article
An analysis-based model for axially loaded circular CFST columns
Lai, M.H. and Ho, J.C.M. (2017). An analysis-based model for axially loaded circular CFST columns. Thin-Walled Structures, 119, 770-781. doi: 10.1016/j.tws.2017.07.024
2017
Journal Article
Limestone and silica fume to improve concurrent flowability-segregation limits of concrete
Kounakoff, Brendan Alex, Hanzic, Lucija and Ho, Johnny Ching Ming (2017). Limestone and silica fume to improve concurrent flowability-segregation limits of concrete. Magazine of Concrete Research, 69 (23), 1189-1202. doi: 10.1680/jmacr.16.00387
2017
Journal Article
Fillers to lessen shear thickening of cement powder paste
Maybury, J., Ho, J. C. M. and Binhowimal, S. A. M. (2017). Fillers to lessen shear thickening of cement powder paste. Construction and Building Materials, 142, 268-279. doi: 10.1016/j.conbuildmat.2017.03.076
2017
Journal Article
Effects of external confinement on structural performance of concrete-filled steel tubes
Dong, C. X., Kwan, A. K. H. and Ho, J. C. M. (2017). Effects of external confinement on structural performance of concrete-filled steel tubes. Journal of Constructional Steel Research, 132, 72-82. doi: 10.1016/j.jcsr.2016.12.024
2017
Journal Article
Shear thickening of cement powder paste–why and how to mitigate?
Maybury, J. and Ho, J. C.M. (2017). Shear thickening of cement powder paste–why and how to mitigate?. HKIE Transactions Hong Kong Institution of Engineers, 24 (4), 193-203. doi: 10.1080/1023697X.2017.1375433
2017
Journal Article
Multi-sized fillers to improve strength and flowability of concrete
Hanzic, Lucija and Ho, Johnny Ching Ming (2017). Multi-sized fillers to improve strength and flowability of concrete. Advances in Cement Research, 29 (3), 112-124. doi: 10.1680/jadcr.16.00100
2017
Conference Publication
Nanocellulose as a sustainable nanoadditive for polymer, building and construction materials
Septevani, Athanasia A., Mohd Amin, Khairatun Najwa, Evans, David A. C., Amiralian, Nasim, Pooley, Liam, Ho, Johnny, Shao, Liying, Martin, Darren J. and Annamalai, Pratheep Kumar (2017). Nanocellulose as a sustainable nanoadditive for polymer, building and construction materials. 2017 International Conference on BioNano Innovation, Brisbane, Australia, 24-27 September 2017.
2017
Conference Publication
Demoting splitting crack formation in confined concrete by silica fume
Roslee, A. A., Fernando, D. and Ho, J. C.M. (2017). Demoting splitting crack formation in confined concrete by silica fume. 24th Australasian Conference on the Mechanics of Structures and Materials, ACMSM 2016, Perth, Western Australia, December 6, 2016-December 9, 2016. CRC Press/Balkem.
2017
Conference Publication
Demoting splitting crack formation in confined concrete by silica fume
Roslee, A. A., Fernando, D. and Ho, J. C. M. (2017). Demoting splitting crack formation in confined concrete by silica fume. 24th Australasian Conference on the Mechanics of Structures and Materials, Perth, WA, United States, 6-9 December 2016. Boca Raton, FL, United States: CRC Press. doi: 10.1201/9781315226460-254
2017
Conference Publication
Behavior of FRP confined ultra-high strength concrete columns under compression: An experimental study
Jiang, S., Fernando, D., Ho, J. C. M. and Heitzmann, M. (2017). Behavior of FRP confined ultra-high strength concrete columns under compression: An experimental study. 24th Australasian Conference on the Mechanics of Structures and Materials, Perth, WA, United States, 6-9 December 2016. Boca Raton, FL, United States: CRC Press. doi: 10.1201/9781315226460-272
2017
Journal Article
Filler to improve concurrent flowability and segregation performance of concrete
Binhowimal, S. A. M., Hanzic, L. and Ho, J. C. M. (2017). Filler to improve concurrent flowability and segregation performance of concrete. Australian Journal of Structural Engineering, 18 (2), 73-85. doi: 10.1080/13287982.2017.1333184
2017
Conference Publication
Behavior of FRP confined ultrahigh-strength concrete columns under axial compression: An experimental study
Jiang, S., Fernando, D., Ho, J. C.M. and Heitzmann, M. (2017). Behavior of FRP confined ultrahigh-strength concrete columns under axial compression: An experimental study. 24th Australasian Conference on the Mechanics of Structures and Materials, ACMSM 2016, Perth, WA, December 6, 2016-December 9, 2016. CRC Press/Balkem.
2016
Journal Article
A new analysis method for polymer-confined concrete columns
Ouyang, Y., Lo, S. H., Kwan, A. K. H. and Ho, J. C. M. (2016). A new analysis method for polymer-confined concrete columns. Proceedings of the ICE - Structures and Buildings, 169 (12) 1500140, 892-911. doi: 10.1680/jstbu.15.00140
2016
Journal Article
Axial and lateral stress-strain model for concrete-filled steel tubes with FRP jackets
Dong, C. X., Kwan, A. K. H. and Ho, J. C. M. (2016). Axial and lateral stress-strain model for concrete-filled steel tubes with FRP jackets. Engineering Structures, 126, 365-378. doi: 10.1016/j.engstruct.2016.07.059
2016
Journal Article
A theoretical axial stress-strain model for circular concrete-filled-steel-tube columns
Lai, M. H. and Ho, J. C. M. (2016). A theoretical axial stress-strain model for circular concrete-filled-steel-tube columns. Engineering Structures, 125, 124-143. doi: 10.1016/j.engstruct.2016.06.048
2016
Journal Article
Confining and hoop stresses in ring-confined thin-walled concrete-filled steel tube columns
Lai, Mian Heng and Ho, Johnny C. M. (2016). Confining and hoop stresses in ring-confined thin-walled concrete-filled steel tube columns. Magazine of Concrete Research, 68 (18), 916-935. doi: 10.1680/jmacr.15.00225
2016
Journal Article
Axial and lateral stress-strain model for concrete-filled steel tubes
Kwan, A. K. H., Dong, C. X. and Ho, J. C. M. (2016). Axial and lateral stress-strain model for concrete-filled steel tubes. Journal of Constructional Steel Research, 122, 421-433. doi: 10.1016/j.jcsr.2016.03.031
2016
Journal Article
Axial and lateral stress-strain model for circular concrete-filled steel tubes with external steel confinement
Kwan, A. K. H., Dong, C. X. and Ho, J. C. M. (2016). Axial and lateral stress-strain model for circular concrete-filled steel tubes with external steel confinement. Engineering Structures, 117, 528-541. doi: 10.1016/j.engstruct.2016.03.026
2016
Journal Article
Fire performance of concrete using novel fire testing
Dao, Vinh, Torero, José, Ho, Johnny, O'Moore, Liza, Maluk, Cristian and Bisby, Luke (2016). Fire performance of concrete using novel fire testing. Concrete in Australia, 42 (1), 58-59.
Supervision
Availability
- Associate Professor Johnny Ho is:
- Available for supervision
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Available projects
-
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
Enquiries
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