Thiloththama Hiranya Kumari Nawarathna
  • Senior Lecturer Gr. II
  • Ph.D. (Hokkaido, Japan), M.Eng (Moratuwa, SL), B.Sc. Eng. (Hons) (Moratuwa, SL)
  • hiranya@tech.jfn.ac.lk
  • Institute of Engineers Sri Lanka: Associate Member, AMIE (SL)
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  • Geo-technical Engineering
  • Bio-cementation
  • Biomaterial formation
  • Genetic engineering
  • Slope stability analysis
  • Numerical analysis
  • Soil Mechanics
  • Geotechnology
  • Research Methodology

Journal Publications

  1. Nawarathna, T.H.K., Nakashima, K., Kawabe, T.,  Mwandira, W., Kurumisawa, K., Kawasaki, S. "Artificial fusion protein to facilitate calcium carbonate mineralization on insoluble polysaccharide for efficient biocementation". ACS Sustainable Chem. Eng. in press.
  2. Nawarathna, T.H.K. Nakashima, K. Kawasaki, S. "Chitosan enhances calcium carbonate precipitation and solidification mediated by bacteria", International Journal of Biological Macromolecules, Vol. 133, pp.867-874, July 2019. https://doi.org/10.1016/j.ijbiomac.2019.04.172
  3. T.H.K. Nawarathna, Kazunori Nakashima, Masahiro Fujita, Momoko Takatsu, Satoru Kawasaki, "Effects of cationic polypeptide on CaCO3 crystallization and sand solidification by microbial-induced carbonate precipitation", ACS Sustainable Chemistry & Engineering, Vol 6, Issue 8, pp.10315-10322, July 2018.
    https://doi.org/10.1021/acssuschemeng.8b01658
  4. T.H.K. Nawarathna, Kazunori Nakashima, Satoru Kawasaki, "Enhancement of microbially induced carbonate precipitation using organic biopolymer", International Journal of GEOMATE, Vol.14, Issue 41, pp.7-12, January 2018.
    https://doi.org/10.21660/2018.41.7223
  5. K. Nakashima, M. Fujita, T.H.K. Nawarathna, S. Kawasaki, "Bio-based cementation using urease-producing bacteria: Sand solidification and kinetics", New Biotechnology, Vol. 44, Page S154, October 2018. https://doi.org/10.1016/j.nbt.2018.05.1152

Conference Proceedings

  1. T.H.K. Nawarathna, K. Nakashima, S. Kawasaki, "Microbially induced carbonate precipitation assisted by poly-L-lysine: ecofriendly approach inspired by nature", ACS Fall 2019 National Meeting & Exposition", San Diego, United States, Aug.23-28, 2019.
  2. T.H.K. Nawarathna, Kazunori Nakashima, Satoru Kawasaki, "Enzyme mediated CaCO3 crystallization in the presence of natural polysaccharides", 14th International Chitin and Chitosan Conference (ICCC) & 12th Asia-Pacific Chitin and Chitosan Symposium (APCCS), 24(2), pp 179, Osaka, Japan, Aug.27-30, 2018.
  3. T.H.K. Nawarathna, Kazunori Nakashima, Satoru Kawasaki, "Effect of cationic bio-polymer on CaCO3 crystallization by microbe",1st International KAMPAI Symposium on Sustainable Management of Resources and Environment in the 21st Century, pp 24, Sapporo, Japan, Nov. 6-7, 2017.
  4. T.H.K. Nawarathna, Kazunori Nakashima, Satoru Kawasaki, "Effect of the organic biopolymer on the microbially induced carbonate precipitation and its morphology", 7th International Conference on Geotechnique, Construction Materials and Environment, Mie, Japan, pp.719-724, Nov. 21-24, 2017.
  5. T.H.K. Nawarathna, Kazunori Nakashima and Satoru Kawasaki, "Effect of organic bio-polymer on bio-mineralization of CaCO3", Proceedings of International Symposium on Earth Resources Management and Environment (ISERME 2017), pp.59-66, Wadduwa, Sri Lanka, 2017.
  6. T.H.K. Nawarathna., L.I.N. De Silva, "Applicability of the numerical methods and field Monitoring data to evaluate the stability of an Embankment slope", International Doctoral Symposium on Sustainable Management of Resources and Environment in the 21st century, p.9, Sapporo, Japan, Nov. 9-11, 2016.
  7. T.H.K. Nawarathna., L.I.N. De Silva., "Applicability of the field deformation measurement data in predicting the stability of embankment slopes", Proceedings of the International Conference on Geotechnical Engineering, Colombo, Sri Lanka, pp 577-580, Aug10-11, 2015.
  8. T.H.K. Nawarathna., L.I.N. De Silva., "Applicability of the limit equilibrium method and the finite element method in predicting the stability of embankment slopes", Annual sessions of IESL, Volume I-part B, pp 11-17, October, 2014.
  9. T.H.K. Nawarathna., L.K.N.S. Kulathilake., H.D.H. Perera., P.A.M. Premalal., P.G.R. Dharmaratne., S.P Chaminda., L.P.S. Rohitha., "Effects of discontinuous properties on the stability of tunnels", Proceedings of the 5th annual conference on Earth Resources for National Development, University of Moratuwa, Sri Lanka, pp 45-48, 24th September 2010.

Book Chapters

  1.  Gowthaman S., Nawarathna T.H.K., Nayanthara P.G.N., Nakashima K., Kawasaki S. "The Amendments in Typical Microbial Induced Soil Stabilization by Low-Grade Chemicals, Biopolymers and Other Additives: A Review", In: Achal V., Chin C.S. (eds) Building Materials for Sustainable and Ecological Environment, Springer, Singapore. 2021. https://doi.org/10.1007/978-981-16-1706-5_4
  1. MEXT (Japanese Government Scholarship) scholar (2016-2019)