Raymond Ong

Raymond Ong

Associate Professor and Associate Head (Research), Department of Civil and Environmental Engineering, NUS, Associate Professor and Associate Head (Research) in the Department of Civil and Environmental Engineering (NUS)

ceeongr@nus.edu.sg

Dr Ong is an Associate Professor and Associate Head (Research) in the Department of Civil and Environmental Engineering at the National University of Singapore (NUS). He graduated with a B.Eng (Civil) (First Class Honours) with a minor in Business from the National University of Singapore in 2003 and obtained his PhD in Civil Engineering from the National University of Singapore in 2007. Prior to his current appointment, he worked as a postdoctoral research associate in the School of Civil Engineering at Purdue University from 2007 to 2008, a visiting assistant professor in the same university in 2009 and then a lecturer (from 2010 to 2014) and assistant professor (2014-2020) in the Department of Civil and Environmental Engineering at the National University of Singapore.

Dr Ong’s research interests include pavement materials and engineering, and multimodal transport infrastructures and operations, with emphasis on future mega-transport infrastructures/operations (such as car-lite/car-free towns, next generation seaports and airports).

published papers

Recent Articles in Journals(past 5 years)
Pavement engineering

Jagadeesh, A., Ong, G. P. and Su, Y. M. (2020) “Effect of Pore Network Characteristics on Non-Darcy Permeability of Pervious Concrete Mixture”, Constructions and Building Materials, 259, 115859.

Jagadeesh, A., Ong, G. P. and Zhang, L. (2019) “Pareto Optimization Approach for Functional Design of Pervious Pavements Using Numerical Modelling”, Journal of Eastern Asian Society of Transportation Studies, 13, 1605-1615.

Jagadeesh, A., Ong, G. P. and Su, Y. M. (2019) “Development of a Discharge-Based Thresholding Algorithm for Pervious Concrete Mixtures”, ASCE Journal of Materials in Civil Engineering, 31(9), 04019179, doi: 10.1061/(ASCE)MT.1943-5533.0002807

Pasindu, H. R., Fwa, T. F. and Ong, G. P. (2016) “Analytical Evaluation of Aircraft Operational Risks from Runway Rutting”, International Journal of Pavement Engineering, 17(9), 810-817.

Zhang, L., Fwa, T. F., Ong, G. P. and Chu, L. (2016) “Analyzing Effect of Roadway Width on Skid Resistance of Porous Pavement”, Road Materials and Pavement Design, 17(1), 1-14.

Multimodal transport infrastructures and operations

Zhao, D. and Ong, G. P. (2021) “Geo-fenced Parking Spaces Identification for Free-floating Bicycle Sharing System”, Transportation Research Part A: Policy and Practice, 148, 49-60. https://doi.org/10.1016/j.tra.2021.03.007

Wang, H., Zhao, D., Cai, Y., Meng, Q. and Ong, G. P. (2021) “Taxi Trajectory Data Based Fast-charging Facility Planning for Urban Electric Taxi Systems”, Applied Energy, 286, 116515. https://doi.org/10.1016/j.apenergy.2021.116515

Zhao, D., Ong, G. P., Wang, W. and Zhou, W. (2021) “Prediction of Public Bicycle Daily Trip Generation, Attraction, Distribution and Duration by Built Environment”, Sustainability, 132(2), 500. https://doi.org/10.3390/su13020500

Tian, Q., Liu, P., Ong, G. P. and Huang, H. (2021) “Morning Commuting Pattern and Crowding Pricing in a Many-to-One Public Transit System with Heterogeneous Users”, Transportation Research Part E: Logistics and Transport Review, 145, 102182.

Liu, J., Ong, G. P. and Chen, X. Q. (2020) “GraphSAGE Based Traffic Speed Forecasting for Segment Network with Sparse Data”, IEEE Transactions on Intelligent Transportation Systems. https://doi.org/10.1109/TITS.2020.3026025

Liu, P., Liu, J., Ong, G. P. and Tian, Q. (2020) “Flow Pattern and Optimal Capacity in a Bi-modal Traffic Corridor with Heterogeneous Users”, Transportation Research Part E: Logistics and Transport Review, 133, 101831. https://doi.org/10.1016/j.tre.2019.101831

Wang, H., Zhao, D., Meng, Q., Ong, G. P. and Lee, D. H. (2020) “Network-Level Energy Consumption Estimation for Electric Vehicles Considering Vehicle and User Heterogeneity”, Transportation Research Part A: Policy and Practice, 132, 30-46. https://doi.org/10.1016/j.tra.2019.10.010

Wang, H., Meng, Q., Ong, G. P., Cai, Y. and Zhao, D. (2019) “A Trajectory-Based Energy Consumption Estimation Method considering Battery Degradation for an Urban Electric Vehicle Network”, Transportation Research Part D: Transport and Environment, 74, 142-153. https://doi.org/10.1016/j.trd.2019.07.021

Liu, J., Han, K., Chen, X. and Ong, G. P. “Spatial-Temporal Inference of Urban Vehicle Emissions Based on Taxi Trajectories and Multi-Source Urban Data”, Transportation Research Part C: Emerging Technologies, 106, 145-165. https://doi.org/10.1016/j.trc.2019.07.005

Zhao, D., Ong, G. P., Wang, W. and Hu, X. J. (2019) “Effect of Built Environment on Shared Bicycle Reallocation: A Case Study of Nanjing, China”, Transportation Research Part A: Policy and Practice, 128, 73-88. https://doi.org/10.1016/j.tra.2019.07.018

Cai, Y., Wang H., Ong, G. P., Meng, Q. and Lee, D. H. (2019) “Investigating User Perception on Autonomous Vehicle-Based Mobility-on-Demand Services in Singapore Using the Logit Kernel Approach”, Transportation, 46(6), 2063-2080. https://doi.org/10.1007/s11116-019-10032-8

Wang, H., Zhao, D., Meng, Q., Ong, G. P. and Lee, D-H. (2019) “A Four-Step Method for Electric-Vehicle Charging Facility Deployment in a Dense City: An Empirical Study in Singapore”, Transportation Research Part A: Policy and Practice, 119, 224-237, doi: 10.1016/j.tra.2018.11.012

Hua, W. and Ong, G. P. (2018) “Effect of Information Contagion during Train Service Disruption for an Integrated Rail-Bus Transit System”, Public Transport, 10(3), 571-594.

Zhao, D., Wang, W., Ong, G. P. and Ji, Y. (2018) “An Association Rule Based Method to Integrate Metro-Public Bicycle Smart Card Data for Trip Chain Analysis”, Journal of Advanced Transportation, 2018, Article ID 4047682, 11 pages, doi: 10.1155/2018/4047682.

Farhan, J. and Ong, G. P. (2018) “Forecasting Seasonal Container Throughput at International ports using SARIMA Models”, Maritime Economics and Logistics, 20(1), 131-148.

Hua, W. and Ong, G. P. (2017) “Network Survivability and Recoverability in Urban Rail Transit Systems under Disruption”, IET Intelligent Transportation Systems, 11(10), 641-648.

Ong, G. P. and Sou, W. S. (2016) “Forecasting Global Maritime Container Demand Using Integrated Trade-Commodity Flow Modeling Framework”, Transportation Research Record, 2549, 64-77.

Recent Conference Papers/Presentations (past 5 years)
Pavement engineering

Jagadeesh, A., Ong, G. P. and Su, Y. M. (2021) “Selection of Image Processing Algorithms for Evaluation of Pervious Pavement Pore Network Properties”, 12th International Conference on Road and Airfield Pavement Technology, 14-16 July 2021, Colombo, Sri Lanka. (online)

Tan, J. H., Khan, Q. and Ong, G. P. (2021) “Laboratory Characterization of Cement Treated Rock Rubble as Airfield Pavement Base Layer”, 12th International Conference on Road and Airfield Pavement Technology, 14-16 July 2021, Colombo, Sri Lanka. (online)

Jagadeesh, A., Yang, L., Ong, G. P. and Yu, L. (2021) “Use of Plastic Wastes in Asphalt Surface Courses for Urban Cities”, 2021 International Airfield and Highway Pavements Conference, 6-9 June 2021, Austin, Texas, USA. (online)

Teh, Z. H., Ng, Y. C. H., Ong, G. P. and Goh, S. H. (2021) “Investigation into Resilient Modulus of Airfield Pavement Subgrade with Varying Mix Ratios of Tunnel-Bored Old Alluvium and Sand”, 2021 International Airfield and Highway Pavements Conference, 6-9 June 2021, Austin, Texas, USA. (online)

Zhang, Z., Ong, G. P. and Goh, S. H. (2021) “Full-Scale Accelerated Pavement Testing using Geotechnical Centrifuge”, 2021 International Airfield and Highway Pavements Conference, 6-9 June 2021, Austin, Texas, USA. (online)

Tan, J. Y., Ong, J. K. and Ong, G. P. (2021) “A Case Study on Quality Control of Airport Pavement Construction Based on Deflection Measurement”, 100th Transportation Research Board Annual Meeting, 5-29 January 2021, Washington DC, USA. (Virtual)

Li, S., Ong, G. P. and Ni, F. (2020) “Use of multiple stress creep recovery test to evaluate viscoelastic properties of asphalt mastic”, RILEM International Symposium on Bituminous Materials (ISBM Lyon 2020), 15-16 Dec 2020, Lyon, France

Jagadeesh, A., Ong, G. P. and Su, Y.-M. (2020) “Effect of Global Thresholding Algorithms on Pervious Concrete Pore Network Properties Using XRCT-Based Digital Image Processing”, Proceedings of the 9th International Conference on Maintenance and Rehabilitation of Pavements, Lecture Notes in Civil Engineering, 76, Springer, 575-585.

Jagadeesh, A., Ong, G. P. and Su, Y.-M. (2020) “Effect of Thresholding Algorithms on Pervious Pavement Skid Resistance”, Advances in Materials and Pavement Performance Prediction, 3-7 Aug 2020

Li, S., Ong, G. P. and Ni, F. (2020) “Investigation of Viscoelastic Behavior of Asphalt Mastic with Different Filler Contents using the Multiple Stress Creep Test”, Transportation Research Board (TRB) 99th Annual Meeting, 12-16 January 2020, Washington DC, USA

Jagadeesh, A., Ong, G. P. and Su, Y.-M. (2019) “Evaluation of Non-Darcy Permeability Characteristics of Pervious Concrete using XRCT-based Finite Volume Simulations”, 1st iSMARTi International Symposium on Pavement Service Functional Design and Management, 24-26 October 2019, Xi’an, China.

Jagadeesh, A., Ong, G. P. and Su, Y.-M. (2019) “Evaluation of Pervious Concrete Pore Network Properties using the Watershed Segmentation Approach”, ASCE International Airfield and Highway Conference, 21-24 July 2019, Chicago, Illinois, USA.

Yeo, C. H., Ong, G. P. and Goh, S. H. (2019) “Geotechnical Centrifuge Models for Airport Pavements subjected to Repeated Aircraft Loads”, ASCE International Airfield and Highway Conference, 21-24 July 2019, Chicago, Illinois, USA.

Jagadeesh, A., Singh, J., Ong, G. P. and Lee, Y. P. K. (2019) “Effect of Modified Alkyl-Amidopoloamine and Fuel Oil as Rejuvenators on Reclaimed Asphalt Pavement (RAP) Mixture Performance”, 11th International Conference on Road and Airfield Pavement Technology, 10-12 July 2019, Kuala Lumpur, Malaysia.

Jagadeesh, A., Ong, G. P. and Su, Y. M. (2019) “Texture Evaluation of Pervious Pavements using Three-dimensional X-ray Computed Tomography”, 11th International Conference on Road and Airfield Pavement Technology, 10-12 July 2019, Kuala Lumpur, Malaysia.

Jagadeesh, A., Ong, G. P. and Su, Y. M. (2018) “Evaluation of Pervious Concrete Pore Structure Properties using X-Ray Computed Tomography”, 11th Asia Pacific Conference on Transportation and Environment, 18-20 October 2018, Malang, Indonesia.

Jagadeesh, A., Ong, G. P. and Su, Y. M. (2018) “Porosity Evaluation of Pervious Concrete using Three Dimensional X-Ray Computed Tomography”, 4th International Conference on Transportation Infrastructure (ICTI 2018), 9-10 July 2018, Pretoria, South Africa.

Jagadeesh, A., and Ong, G. P. (2017) “Frictional and Acoustic Design of Porous Pavements using Numerical Modelling”, 30th KKHTCNN Symposium on Civil Engineering, 2-4 November 2017, Taipei, Taiwan.

Ong, G. P. (2016) “Reliability Analysis of MEPDG Pavement Design Method”, Proceedings of the 8th International Conference on Maintenance and Rehabilitation of Pavements, 27-29 July 2016, Singapore.

Ong, G. P., Zhang, L. and Fwa, T. F. (2016) “Modeling Tire-Pavement Noise on Porous Pavements using Finite Element Method-Boundary Element Method Approach”, Transportation Research Board 95th Annual Meeting Compendium of Papers, 10-14 January 2016, Washington DC, USA.

Multimodal transport infrastructures and operation

Ong, G. P. and Hwang, Y. H. (2019) “A Concept for a Smart, Cool and Naturalistic Active Mobility Infrastructure Landscape for Singapore, 1st International Conference for Smart Cities, 17-19 July 2019, Seoul, South Korea.

Liu, J. and Ong, G. P. (2018) “Reconstructing Urban Traffic Dynamics with Vehicle Trajectory Data”, 31st KKHTCNN Symposium on Civil Engineering, 22-24 November 2018, Kyoto, Japan.

Cai, Y., Ong, G. P. and Meng, Q. (2018) “Sidewalk-based Bicycle Network Design with Connectivity and Equity Consideration: A Case Study of Singapore”, 31st KKHTCNN Symposium on Civil Engineering, 22-24 November 2018, Kyoto, Japan.

Leong, J. Y. and Ong, G. P. (2018) “Sun-to-Heel Concept for Life Cycle Assessment of Future Transport Technologies”, 11th Asia Pacific Conference on Transportation and Environment, 18-20 October 2018, Malang, Indonesia. (won best presentation award)

Liu, J., Liu P. and Ong, G.P. (2018) “Dynamic Traffic Equilibrium and Optimal Allocation of Improved Investment on a Bi-modal Corridor”, 2018 World Transport Convention, 18-21 June 2018, Beijing, China.

Liu, P., Liu Y. and Ong, G. P. (2018) “Dynamic User Equilibrium Departure Time and Mode Choices in a Bi-Modal Corridor with Risk-adverse Travelers”, 6th International Symposium on Reliability Engineering and Management, 31 May-1 June 2018, Singapore.

Hua, W. and Ong, G. P. (2018) “Modelling the Effect of Rail Infrastructure and Rolling Stock Failure on Performance of an Integrated Urban Bus-Rail Transit Network”, 8th Annual International Association for Chinese Infrastructure Professionals (IACIP) Workshop, 7 January 2018, Washington DC. (won best student poster award)

Ong, G. P. and Zhao, D. (2017) “Strategies for the Creation of Bicycling Sharing Friendly Environment: Case Study of Singapore”, 8th International Symposium on Travel Demand Management, 26-29 September 2017, Taipei, Taiwan.

Hua, W. and Ong, G. P. (2016) “A Preliminary Study on Modeling Disruptions on Urban Rail Transit Network”, 10th Asia Pacific Conference on Transport and the Environment, 8-10 November 2016, Petaling Jaya, Malaysia.

Hua, W. and Ong, G. P. (2016) “Network Resilience and Recoverability in Urban Rapid Transit Systems during Disruption”, ITS World Congress 2016, 10-14 October 2016, Melbourne, Australia.

Ong, G. P. and Sou, W. S. (2016) “An Integrative Economic-Transport Model Framework for Global Maritime Commodity Flow”, Proceedings of the 19th Global Trade Analysis Project (GTAP) Conference, 15-17 June 2016, Washington D.C., USA.

Ong, G. P. (2016) “Development of a Multimodal Microscopic Traffic Simulation Model for Land Border Operations in Singapore”, Proceedings of the 6th International Conference on Transportation and Logistics, 7-9 September 2016, Hsinchu, Taiwan.