Dr Roshan Jayathilakage
Research Associate

Dr Roshan Jayathilakage

Civil and Environmental Engineering

Roshan completed his Ph.D. at Swinburne University of Technology, Melbourne, Australia in Civil Engineering (Concrete 3D printing) in 2021. He worked as a structural engineer for one and half years at NSIENT Consulting Engineers in Melbourne and moved to Sydney to join UNSW at Sydney as a postdoctoral research associate in the school of civil and environmental engineering. His expertise are concrete 3D printing, concrete rheology, construction materials, and mix designs, concrete durability, structural design, and numerical simulation of fresh concrete and hardened concrete at meso and macro level. 


Jayathilakage, R., Sanjayan, J. and Rajeev, P., 2019. Direct shear test for the assessment of rheological parameters of concrete for 3D printing applications. Materials and Structures,52(1), p.12

Jayathilakage, R., Rajeev, P. and Sanjayan, J.G., 2020. Yield stress criteria to assess the buildability of 3D concrete printing. Construction and Building Materials, 240, p.117989.

Sanjayan, J.G., Jayathilakage, R. and Rajeev, P., Vibration induced active rheology control for 3D concrete printing. Cement and Concrete Research, 140, p.106293

Jayathilakage, R., Rajeev, P. and Sanjayan, J., 2021. Extrusion rheometer for 3D concreteprinting. Cement and Concrete Composites, p.104075

Jayathilakage, R., Rajeev, P. and Sanjayan, J., 2022. Rheometry for Concrete 3D Printing: A Review and an Experimental Comparison. Buildings, 12(8), p.1190.

Jayathilakage, R.I., Rajeev, P. and Sanjayan, J., 2019. Predication of strength-based failure in extrusion-based 3D concrete printing. In Rheology and Processing of Construction Materials (pp. 391-399). Springer, Cham

Jayathilakage, R., Sanjayan, J. and Rajeev, P., 2020, July. Characterizing Extrudability for 3D Concrete Printing Using Discrete Element Simulations. In RILEM International Conference on Concrete and Digital Fabrication (pp. 290-300). Springer, Cham

Jayathilakage, R., Sanjayan, J. and Rajeev, P., 2020. Comparison of Rheology Measurement Techniques Used in 3D Concrete Printing Applications. In ICSECM 2019 (pp. 261-273).Springer, Singapore

 J. R. I. Jayathilaka, D. D. P. D. Dehigaspitiya, S. T. Pathirana, and K. R. B. Herath, Failure mechanisms of carbon nanotube reinforced composites, Swinburne University of Technology, Washington State University, 2016