Professor Harianto Rahardjo has served as Vice-Dean/Associate Chair (Research) School of Civil & Environmental Engineering, Director of NTU-PWD Geotechnical Research Centre, Head of Division of Infrastructure Systems and Maritime Studies, Nanyang Technological University (NTU), Singapore. He obtained his Ph.D. and M.Sc. degrees in Geotechnical Engineering from University of Saskatchewan, Saskatoon, Canada and his B.Eng. degree in Civil Engineering from Bandung Institute of Technology (ITB), Bandung, Indonesia. He has close to 40 years of working experience in consulting, teaching and research in geotechnical engineering. He is a member of the TC106 Committee of International Society of Soil Mechanics and Geotechnical Engineering (ISSMGE) on Unsaturated Soils and Member of the JTC1 on Natural Slopes and Landslides. Career details 1991 - Present: Professor (2004), Associate Professor (1999), Senior Lecturer (1992), Lecturer (1991) in the School of Civil and Environmental Engineering, Nanyang Technological University, Singapore
Official Appointments
2015 – Present: Chairman of the School Review Committee for Promotions and Tenure (SRCPT) in the School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 2008 – 2014: Head of Division of Infrastructure Systems and Maritime Studies, Nanyang Technological University, Singapore 1999 - 2007: Vice-Dean (Research) / Assoc Chair (Research), School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 1996 - 1999: Director, NTU-PWD Geotechnical Research Centre, School of Civil and Environmental Engineering, Nanyang Technological University, Singapore
Member of Professional Societies Registered Professional Engineers, Singapore, 1997 Registered Professional Engineers of Saskatchewan, Canada, 1986 Member, Canadian Geotechnical Society, 1981 Member, Engineering Institute of Canada, 1981 Member, International Society of Soil Mech. and Geotechnical Engineering, 1981 Senior Member (2016-present), Member (2002-2016), Engineering Institute of Singapore, 2002 Member (Life), Southeast Asian Geotechnical Society, 1991
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Main research interest Rainfall - induced landslides: mechanism, assessment, characterization, instrumentation and preventive measures Unsaturated Soil Mechanics: laboratory testing, field measurements and numerical modelling Capillary Barrier System for slope stabilization and Geo-Barrier System for retaining structure using the principles of unsaturated soil mechanics Behaviour of unsaturated tropical soils: shear strength, air and water flows, suction measurements Soil improvement for tree stability Specialised laboratory soil testing and field instrumentation for unsaturated soils
Professor Rahardjo has conducted extensive research on unsaturated soil mechanics to solve geotechnical problems associated with residual soils and for its application to sustainable urban living in tropical regions including Singapore. He incorporated the mechanics and properties of unsaturated soils and the flux boundary conditions related to the climatic conditions (i.e. rainfall infiltration, evaporation and transpiration across the ground surface) to the assessment of the stability of residual soil slopes and stability of trees during and after rainfalls. His investigations indicated that unsaturated soil mechanics plays an important role in understanding the dynamic interaction between the environment and near-ground-surface soils. These research activities have led to the development of an advanced unsaturated soil mechanics laboratory at Nanyang Technological University and numerous comprehensive instrumented slopes. Professor Rahardjo’s recent research activities involved the application of unsaturated soil mechanics in Capillary Barrier System (CBS) for slope stabilization and Geobarrier System (GBS)for retaining structure through laboratory and numerical analyses and instrumented systems in the field. He is the co-author of the first textbook on unsaturated soils “Soil Mechanics for Unsaturated Soils“, by D.G. Fredlund and H. Rahardjo, published by John Wiley in 1993 with Chinese translation in 1997, Vietnamese translation in 2000, Spanish translation in 2011, Japanese translation in 2014. He is the co-author of the second textbook “Unsaturated Soil Mechanics in Engineering Practice”, by D.G. Fredlund, H. Rahardjo and M.D. Fredlund and published by John Wiley in 2012. Prof Rahardjo also co-authored the third textbook “Unsaturated Soils Guidelines – Volume 1: Soil-Water Characteristic Curves for Materials Classified according to the Unified Soil Classification System”, by K. Mercer, H. Rahardjo and A. Satyanaga and published by Australian Center for Geomechanics, University of Western Australia in 2019. He has published over 400 technical publications. He has also presented his research works in over 60 keynote / invited lectures and 24 short courses in various countries. He has supervised 18 PhD students and 24 Master students who came from various countries. Prof. Rahardjo's website: https://blogs.ntu.edu.sg/usmsul/ Research Projects (selected) on Unsaturated Soil Mechanics, Slope Stability and Tree Stability New soil-water Management Technologies for Sustainable Urban Greenery (2018 - ) (National Parks Board of Singapore-NParks) - Principal Investigator The Development of Slope Management and Susceptibility Geographical Information System (SMSGIS) (2017 - ) (Building and Construction Authority-BCA) – Principal Investigator Climate Change Impact on Urban Tree Resilience (2015 - ) (Institute of High Performance Computing of A*STAR, National Environmental Agency-NEA and National Parks Board-NParks) - Principal Investigator GeoBarrier System for Use in Underground Structure (2014 - ) (Ministry of National Development-MND) – Co-Principal Investigator Eye on Trees (2014 - ) (National Parks Board of Singapore-NParks) - Principal Investigator Advanced Slope Engineering Based on Theory of Unsaturated Soil Mechanics (2013 - ) (Housing and Development Board Building Research Institute-HDB-BRI) – Principal Investigator Assessment of Climatic Factors on Slope Stability (2005 - ) (HSR University, Switzerland) – Principal Investigator Development of Specialized Structural Cells for Growing Street Trees in Constrained Planting Spaces (2013 - ) (National Parks Board of Singapore-NParks) - Principal Investigator
Prizes and Awards
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Rahardjo, H., Satyanaga, A., Gofar, N., Leong, E.C., Kew, J.H., Wang, C.L., Wong, J.L.H. (2019). “Geobarrier System for Protection against Rainfall-induced Slope Failure” ISSMGE International Journal of Geoengineering Case Histories. 5(1):26-42. Rahardjo, H., Kim, Y., Satyanaga, A. (2019). “Role of Unsaturated Soil Mechanics in Geotechnical Engineering”, The 2019 Korean Geotechnical Society (KGS) AWARDS LECTURE at 2019 Spring Geotechnical Engineering Conference, Seoul, South Korea, 14 March 2019. Rahardjo, H., N. Gofar, A. Satyanaga, E.C. Leong, C.L. Wang, J.L.H Wong (2018). “Effect of Rainfall Infiltration on Deformation of Geobarrier”, Geotechnical and Geological Engineering, pp. 1-17. Rahardjo, H., X.F. Nong, D.T.T. Lee, E.C. Leong, and Y.K. Fong (2018) “Expedited soil–water characteristic curve tests using combined centrifuge and chilled mirror techniques”, Geotechnical Testing Journal, Vol. 41(1), pp. 2017-217. Rahardjo, H., Y. Kim, N. Gofar, E.C. Leong, C.L. Wang, J.L.H. Wong (2018) “Field instrumentations and monitoring of GeoBarrier System for steep slope protection”, Transportation Geotechnics, Vol. 16, pp. 29-42. Rahardjo, H., N. Amalia, J.D. Wee, E.C. Leong, L.F. Ow and P.Y. Tan (2017) “Effect of soil hydraulic properties on water infiltration of containerised soil”, Landscape and Urban Planning, Vol.165, pp.84-92. Rahardjo, H, N. Amalia, E.C. Leong, F.R. Harnas, T.T. Lee, and Y.K. Fong (2017) “Flux Boundary Measurement to Study Tree Stability”, Landscape and Ecological Engineering, Vol.13, Issue 1, January 2017, pp.81-92. Rahardjo, H, N. Gofar, N. Amalia, E.C. Leong, and L.F. Ow (2016) “Structural Cell Contribution to Resistance of Trees to Uprooting”, Trees - Structure and Function, October, Vol.30, Issue 5, pp.1843-1853. Rahardjo, H., A. Satyanaga, E.C. Leong, V.A. Santoso and Y.S. Ng (2014). “Performance of An Instrumented Slope Covered with Shrubs and Deep Rooted Grass”. Soils and Foundations, Japanese Geotechnical Society, May, Vol. 54, No. 3, pp. 417-425. Rahardjo, H., A. Satyanaga, E.C. Leong and J.-Y. Wang (2014). “Comprehensive Instrumentation for Real Time Monitoring of Flux Boundary Conditions in Slope. Invited Speaker for the Third Italian Workshop on Landslides, Naples, Italy, 23-24 October 2013 and published in Procedia Earth and Planetary Science, August, Vol. 9, pp. 23-43.
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