Buddhima Indraratna


Buddhima Indraratna AM is a Sri Lankan-born Australian civil engineer and academic specializing in geotechnical engineering. He is a Distinguished Professor of Civil Engineering at the University of Technology Sydney and the Director of its Transport Research Centre. He is recognized for his contributions to transportation geomechanics, particularly rail and road infrastructure, ground improvement, and sustainable use of recycled materials. In 2024, he was appointed a Member of the Order of Australia for significant service to civil engineering. He is also the winner of 6th International Civil Engineer Award in 2024 for lifetime outstanding contributions to Civil Engineering and 2024 Sir John Holland Civil Engineer of the Year.
During the 50th Anniversary of the Australian Geomechanics Society in 2022, Professor Indraratna was honoured as an AGS Life Member for outstanding  contributions over many years to the geotechnical community. He is also a Fellow of numerous prestigious professional organizations including the Australian Academy of Technological Sciences and Engineering, Fellow of the Royal Society of NSW, Institution of Engineers Australia, Life Member and Fellow of the American Society of Civil Engineers, Geological Society of UK, Australasian Institute of Mining and Metallurgy and Institution of Engineers Sri Lanka.

Early life and education

Professor Indraratna was born in Sri Lanka. He attended Ananda College and later received the Lord Mountbatten Scholarship to study at the United World College of the Atlantic in Wales, UK. He earned his BSc in Civil Engineering and MSc in Soil Mechanics and Engineering Seismology from Imperial College London. He completed his PhD in Geotechnical Engineering at the University of Alberta in 1987.

Academic career

After working as a senior research engineer at the Geomechanics Research Centre in Ontario, Canada, Professor Indraratna began his traditional academic career at the Asian Institute of Technology in Thailand, followed by a long tenure at the University of Wollongong for nearly 3 decades. He later joined the University of Technology Sydney as Distinguished Professor and Director of the Transport Research Centre. He has held visiting professorships at institutions such as MIT, Cambridge, IITs, ETH Zurich, and others.

Research and contributions

Professor Indraratna is known for his work on:
  • Stabilising soft soils, transport embankments and landslides using principles of ground improvement such as stone columns, prefabricated vertical drains and vacuum preloading
  • Track foundation design, ballast degradation modeling, and lateral confinement using geosynthetics
  • Recycled material use in transport infrastructure, including patented rubber tyre–reinforced foundations
  • Geoenvironmental solutions for acid sulfate soils and groundwater contamination
He has published over 1,100 scholarly works, including nearly 550 peer-reviewed journal articles and 14 books. His work has been cited over 35,000 times, with an h-index of 97. According to ScholarGPS, Prof.Indraratna is ranked second worldwide in Geotechnics over the past five years and fourth all-time. He is also listed among the top three scholars of all time in Geotechnical Engineering. In his career, he has successfully supervised over 90 PhD students and nearly 50 Postdoctoral fellows.

Patents and standards

He holds a patent for the tyre-cell track foundation, and contributed to:
  • AS 2758.7
  • AS 8700
  • AS 1726

Awards and honors

  • 2025 – Fellow, Royal Society of New South Wales
  • 2025 – 5th CGS Distinguished Lecturer of the year 2025, Canadian Geotechnical Society
  • 2025 – Thomas Keefer Medal, Canadian Civil Engineering Society.
  • 2024 – Member of the Order of Australia
  • 2024 – Sir John Holland Civil Engineer of the Year for lifetime contributions
  • 2024 – International Civil Engineer award by José Entrecanales Ibarra Foundation for lifetime outstanding contributions to Civil Engineering.
  • 2023 – ICE - Sir Visvesvaraya award for outstanding overseas contribution
  • 2023 – Henry Steel Olcott Memorial Oration, Ananda College, Colombo, Sri Lanka
  • 2022 – 9th Stephen Marich Annual Lecture for distinguished services and achievements in Railway Technology
  • 2022 – Honorary Life Member, Australian Geomechanics Society
  • 2021 – NSW Premier’s Science and Engineering Awards: Innovation Category – Finalist.
  • 2021 – Robert M. Quigley Commendation Award for outstanding contribution to the profession through publication in the Can. Geotech. J.
  • 2017 – IACMAG “Outstanding Contributions Medal” in recognition of life-time contributions to geotechnical engineering. awarded by the International Association of Computer Methods & Advances in Geomechanics.
  • 2017 – 4th Louis Menard Lecture, ISSMGE
  • 2016 – Ralph Proctor Inaugural Lecture of ISSMGE for outstanding academic and research achievements and professional contributions in the field of transportation geotechnics.
  • 2015 – Railway Technical Society of Australasia & Engineers Australia Award for contributions to rail innovations
  • 2015 – Thomas Telford Premium Award from Inst. of Civil Engineers (UK) for contributions to Ground Improvement
  • 2014 – CS Desai Excellence Medal for outstanding contributions to geotechnical teaching and research, IACMAG.
  • 2013 – BD Rampala Memorial Lecture, Institution of Engineers, Sri Lanka for outstanding contributions to Rail Engineering
  • 2012 – Robert M. Quigley Commendation Award by the Canadian Geotechnical Society for outstanding contribution through article in Canadian Geotechnical Journal in the field of soft soil stabilisation by vacuum consolidation
  • 2012 – Eurasian University Medal for outstanding contributions to Transport Geomechanics
  • 2011 – Engineers Australia Transport Medal for distinguished contributions to transport infrastructure through original research
  • 2010 – Vice-Chancellor's Award for Outstanding Research, Uni. of Wollongong Australia.
  • 2009 – EH Davis Memorial Lecture of the Australian Geomechanics Society for distinguished contributions to Geomechanics.
  • 2009 – B-HERT Award: "Best Research & Development Collaboration: Rail Track Innovations in Australia". c/o Australian Commonwealth, Dept. of Education, Employment & Workplace Relations.
  • 2008 – IACMAG Medal for Excellent Contributions to the Region, awarded by the International Association for Computer Methods and Advances in Geomechanics.
  • 2008 – IACMAG Outstanding Paper Award: Indraratna, et al.. Analytical and Numerical Modelling of Soft Soil Stabilised by PVD incorporating Vacuum Preloading. Int. Journal of Geomechanics, ASCE, Vol.5, 114–124.
  • 2007 – Robert M. Quigley Commendation Award by the Canadian Geotechnical Society for outstanding contribution to the profession through publication in the Can. Geotech. J..