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Associate Professor Johnny Ho
Associate Professor

Johnny Ho

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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

Qualifications

  • Doctor of Philosophy, University of Hong Kong

Research interests

  • 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

  • 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

  • Rheology of cement powder paste

    Investigation of the dilatancy swerve in superplasticized cement powder paste and mortar

  • 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

151 works between 2001 and 2025

101 - 120 of 151 works

2014

Journal Article

Experimental and theoretical studies of confined HSCFST columns under uni-axial compression

Lai, M. H. and Ho, J. C. M. (2014). Experimental and theoretical studies of confined HSCFST columns under uni-axial compression. Earthquake and Structures, 7 (4), 527-552. doi: 10.12989/eas.2014.7.4.527

Experimental and theoretical studies of confined HSCFST columns under uni-axial compression

2013

Journal Article

Strain-gradient-dependent stress-strain curve for normal-strength concrete

Ho, J. C. M. and Peng, J. (2013). Strain-gradient-dependent stress-strain curve for normal-strength concrete. Advances in Structural Engineering, 16 (11), 1911-1930. doi: 10.1260/1369-4332.16.11.1911

Strain-gradient-dependent stress-strain curve for normal-strength concrete

2013

Journal Article

Improving interface bonding of double-skinned CFST columns

Dong, Chunxiao and Ho, Johnny Ching Ming (2013). Improving interface bonding of double-skinned CFST columns. Magazine of Concrete Research, 65 (20), 1199-1211. doi: 10.1680/macr.13.00041

Improving interface bonding of double-skinned CFST columns

2013

Journal Article

Improving design limits of strength and ductility of NSC beam by considering strain gradient effect

Ho, J. C. M. and Peng, J. (2013). Improving design limits of strength and ductility of NSC beam by considering strain gradient effect. Structural Engineering and Mechanics, 47 (2), 185-207. doi: 10.12989/sem.2013.47.2.185

Improving design limits of strength and ductility of NSC beam by considering strain gradient effect

2013

Journal Article

Deformability design of high-performance concrete beams

Ho, Johnny Ching Ming (2013). Deformability design of high-performance concrete beams. Structural Design of Tall and Special Buildings, 22 (9), 729-748. doi: 10.1002/tal.728

Deformability design of high-performance concrete beams

2013

Journal Article

Efficiency on uni-axial compressive strength improvement by using externally confined concrete-filled steel tube columns

Ho, J. C. M. and Luo, L. (2013). Efficiency on uni-axial compressive strength improvement by using externally confined concrete-filled steel tube columns. HKIE Transactions Hong Kong Institution of Engineers, 20 (2), 96-108. doi: 10.1080/1023697X.2013.794572

Efficiency on uni-axial compressive strength improvement by using externally confined concrete-filled steel tube columns

2013

Journal Article

Behaviour of uni-axially loaded CFST columns confined by tie bars

Ho, J. C. M. and Lai, M. H. (2013). Behaviour of uni-axially loaded CFST columns confined by tie bars. Journal of Constructional Steel Research, 83, 37-50. doi: 10.1016/j.jcsr.2012.12.014

Behaviour of uni-axially loaded CFST columns confined by tie bars

2013

Journal Article

Strain gradient effects on flexural strength design of normal-strength concrete beams

Ho, J. C. M. and Peng, J. (2013). Strain gradient effects on flexural strength design of normal-strength concrete beams. Structural Design of Tall and Special Buildings, 22 (1), 29-49. doi: 10.1002/tal.655

Strain gradient effects on flexural strength design of normal-strength concrete beams

2013

Conference Publication

Uni-axial compression test of concrete-filled-steel-tube columns confined by tie bars

Lai, M. H. and Ho, J. C. M. (2013). Uni-axial compression test of concrete-filled-steel-tube columns confined by tie bars. 11th International Scientific Conference on Modern Building Materials, Structures and Techniques, MBMST 2013, Vilnius, Lithuania, 16-17 May 2013. Amsterdam, Netherlands: Elsevier. doi: 10.1016/j.proeng.2013.04.084

Uni-axial compression test of concrete-filled-steel-tube columns confined by tie bars

2012

Journal Article

Experimental Tests on High-Strength Concrete Columns Subjected to Combined Medium Axial Load and Flexure

Ho, Johnny Ching Ming (2012). Experimental Tests on High-Strength Concrete Columns Subjected to Combined Medium Axial Load and Flexure. Advances in Structural Engineering, 15 (8), 1359-1374. doi: 10.1260/1369-4332.15.8.1359

Experimental Tests on High-Strength Concrete Columns Subjected to Combined Medium Axial Load and Flexure

2012

Journal Article

Flexural ductility and deformability of concrete beams incorporating high-performance materials

Ho, J.C.M., Lam, J.Y.K. and Kwan, A.K.H. (2012). Flexural ductility and deformability of concrete beams incorporating high-performance materials. Structural Design of Tall and Special Buildings, 21 (2), 114-132. doi: 10.1002/tal.579

Flexural ductility and deformability of concrete beams incorporating high-performance materials

2012

Journal Article

Strain gradient effects on concrete stress–strain curve

Peng, Jun and Ho, Johnny Ching Ming (2012). Strain gradient effects on concrete stress–strain curve. Proceedings of the Institution of Civil Engineers: Structures and Buildings, 165 (SB10), 543-565. doi: 10.1680/stbu.10.00056

Strain gradient effects on concrete stress–strain curve

2012

Journal Article

Equivalent stress block for normal-strength concrete incorporating strain gradient effect

Peng, Jun, Ho, Johnny Ching Ming, Pam, Hoat Joen and Wong, Yuk Lung (2012). Equivalent stress block for normal-strength concrete incorporating strain gradient effect. Magazine of Concrete Research, 64 (1), 1-19. doi: 10.1680/macr.2012.64.1.1

Equivalent stress block for normal-strength concrete incorporating strain gradient effect

2012

Journal Article

Uni-axial behaviour of normal-strength CFDST columns with external steel rings

Dong, C.X. and Ho, J.C.M. (2012). Uni-axial behaviour of normal-strength CFDST columns with external steel rings. Steel and Composite Structures, 13 (6), 587-606. doi: 10.12989/scs.2012.13.6.587

Uni-axial behaviour of normal-strength CFDST columns with external steel rings

2012

Journal Article

Uni-axial behaviour of normal-strength concrete-filledsteel-tube columns with external confinement

Ho, J.C.M. and Luo, L. (2012). Uni-axial behaviour of normal-strength concrete-filledsteel-tube columns with external confinement. Earthquake and Structures, 3 (6), 889-910.

Uni-axial behaviour of normal-strength concrete-filledsteel-tube columns with external confinement

2011

Journal Article

Concurrent flexural strength and deformability design of high-performance concrete beams

Ho, J.C.M. and Zhoua, K.J.H. (2011). Concurrent flexural strength and deformability design of high-performance concrete beams. Structural Engineering and Mechanics, 40 (4), 541-562.

Concurrent flexural strength and deformability design of high-performance concrete beams

2011

Journal Article

Limited deformability design of high-strength concrete beams in low to moderate seismicity regions

Ho, Johnny Ching-Ming and Zhou, Kevin Jian-Hui (2011). Limited deformability design of high-strength concrete beams in low to moderate seismicity regions. Journal of Civil Engineering and Management, 17 (3), 409-423. doi: 10.3846/13923730.2011.594219

Limited deformability design of high-strength concrete beams in low to moderate seismicity regions

2011

Journal Article

Inelastic design of high-axially loaded concrete columns in moderate seismicity regions

Ho, J.C.M. (2011). Inelastic design of high-axially loaded concrete columns in moderate seismicity regions. Structural Engineering and Mechanics, 39 (4), 559-578.

Inelastic design of high-axially loaded concrete columns in moderate seismicity regions

2011

Journal Article

Strain gradient effects on flexural strength design of normal-strength concrete columns

Ho, J.C.M. and Peng, J. (2011). Strain gradient effects on flexural strength design of normal-strength concrete columns. Engineering Structures, 33 (1), 18-31. doi: 10.1016/j.engstruct.2010.09.014

Strain gradient effects on flexural strength design of normal-strength concrete columns

2011

Journal Article

Typical collapse modes of confined masonry buildings under strong earthquake loads

Su, R.K.L., Lee, Y.Y., Lee, C.L. and Ho, J.C.M. (2011). Typical collapse modes of confined masonry buildings under strong earthquake loads. Open Construction and Building Technology Journal, 5 (Spec. Issue 1), 50-60. doi: 10.2174/1874836801105010050

Typical collapse modes of confined masonry buildings under strong earthquake loads

Funding

Current funding

  • 2023 - 2028
    ARC Research Hub to Advance Timber for Australia's Future Built Environment
    ARC Industrial Transformation Research Hubs
    Open grant

Past funding

  • 2015 - 2019
    Fire performance of concrete using novel fire testing
    ARC Discovery Projects
    Open grant

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

  • Packing density model of multi-sized spheres

  • Concrete-filled-steel-tube column with hybrid confinement

Supervision history

Completed supervision

Media

Enquiries

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