Dr Saya Ramakrishnan

Dr Saya Ramakrishnan
NameDr Saya Ramakrishnan
Email Addresssaya.ramakrishnan@unisq.edu.au
Job TitleSenior Lecturer
QualificationsBScEng Moratuwa, PhD SwinburneUT
DepartmentSchool of Engineering
AffiliationsCentre for Future Materials
ORCIDhttps://orcid.org/0000-0001-8055-8167
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BScEng
Moratuwa
2013
PhD
SwinburneUT
2017

Current Supervisions

Research TitleSupervisor TypeLevel of StudyCommenced
In-line activation technologies for buildability in concrete 3D printingAssociate SupervisorDoctoral2019
Development of Set-on-Demand geopolymer concrete for 3D printingAssociate SupervisorDoctoral2019
Low-carbon Cement from Pyrolyzed Biomass and Landfill WastesAssociate SupervisorDoctoral2025

Completed Supervisions

Research TitleSupervisor TypeLevel of StudyCompleted
Investigation of lightweight geopolymer foam concrete for fire-rated wall panelsAssociateDoctoral2022
Project titleDetailsYear
Active thermal coatings for energy-efficient and sustainable buildingsIndustry sponsored Project, 2021-2022, $116,0002021
Manufacture of Next Generation SpeedpanelIndustrial Manufacturing CRC (IMCRC) Project (2020-2022), $1,440,0002020
Active Rheology Control of Concrete using Responsive AdditivesARC Discovery Early Career Researcher Award (DECRA), 2019-2023, $429,6292019
DateNameAwarding organisationUnderpinning research
2019National Bursary Award (Highly Commended )Concrete Institute of Australia
2016Excellence in high impact publication as a PhD studentCSIRO
2021FSET Early Career Researcher Award Swinburne University of Technology
2019FSET Early Career Researcher Award (Highly Commended)Swinburne University of Technology
2018HDR Outstanding Thesis Award (Highly Commended)Swinburne University of Technology
2019Discovery Early Career Researcher AwardAustralian Research Council

In-line activation of geopolymer slurry for concrete 3D printing

Muthukrishnan, Shravan, Ramakrishnan, Sayanthan and Sanjayan, Jay. 2022. "In-line activation of geopolymer slurry for concrete 3D printing." Cement and Concrete Research. 162. https://doi.org/10.1016/j.cemconres.2022.107008

Effect of Magnetorheological additives on the buildability of 3D concrete printing

Kanagasuntharam, Sasitharan, Ramakrishnan, Sayanthan, Muthukrishnan, Shravan and Sanjayan, Jay. 2023. "Effect of Magnetorheological additives on the buildability of 3D concrete printing." Journal of Building Engineering. 74. https://doi.org/10.1016/j.jobe.2023.106814

Printhead mixing of geopolymer and OPC slurries for hybrid alkali-activated cement in 3D concrete printing

Ramakrishnan, Sayanthan, Pasupathy, Kirubajiny, Mechtcherine, Viktor and Sanjayan, Jay. 2024. "Printhead mixing of geopolymer and OPC slurries for hybrid alkali-activated cement in 3D concrete printing." Construction and Building Materials. 430. https://doi.org/10.1016/j.conbuildmat.2024.136439

The ambient and elevated temperature performance of hemp fibre reinforced alkali-activated cement foam: Effects of fibre dosage and alkali treatment

Dhasindrakrishna, K, Pasupathy, Kirubajiny, Ramakrishnan, Sayanthan and Sanjayan, Jay. 2023. "The ambient and elevated temperature performance of hemp fibre reinforced alkali-activated cement foam: Effects of fibre dosage and alkali treatment." Journal of Building Engineering. 76. https://doi.org/10.1016/j.jobe.2023.107131

3D concrete printing of eco-friendly geopolymer containing brick waste

Pasupathy, Kirubajiny, Ramakrishnan, Sayanthan and Sanjayan, Jay. 2023. "3D concrete printing of eco-friendly geopolymer containing brick waste." Cement and Concrete Composites. 138. https://doi.org/10.1016/j.cemconcomp.2023.104943

Rapid early age strength development of in-line activated geopolymer for concrete 3D printing

Muthukrishnan, Shravan, Ramakrishnan, Sayanthan and Sanjayan, Jay. 2023. "Rapid early age strength development of in-line activated geopolymer for concrete 3D printing." Construction and Building Materials. 406. https://doi.org/10.1016/j.conbuildmat.2023.133312

Effect of hydrophobic surface-modified fine aggregates on efflorescence control in geopolymer

Pasupathy, Kirubajiny, Ramakrishnan, Sayanthan and Sanjayan, Jay. 2022. "Effect of hydrophobic surface-modified fine aggregates on efflorescence control in geopolymer." Cement and Concrete Composites. 126. https://doi.org/10.1016/j.cemconcomp.2021.104337

Enhancing the chemical foaming process using superplasticizer in aerated geopolymer concrete

Pasupathy, Kirubajiny, Ramakrishnan, Sayanthan and Sanjayan, Jay. 2022. "Enhancing the chemical foaming process using superplasticizer in aerated geopolymer concrete." Construction and Building Materials. 324. https://doi.org/10.1016/j.conbuildmat.2022.126535

Set on demand geopolymer using print head mixing for 3D concrete printing

Muthukrishnan, Shravan, Ramakrishnan, Sayanthan and Sanjayan, Jay. 2022. "Set on demand geopolymer using print head mixing for 3D concrete printing." Cement and Concrete Composites. 128. https://doi.org/10.1016/j.cemconcomp.2022.104451

Synthesis and performance of intumescent alkali-activated rice husk ash for fire-resistant applications

Dhasindrakrishna, K., Ramakrishnan, Sayanthan, Pasupathy, Kirubajiny and Sanjayan, Jay. 2022. "Synthesis and performance of intumescent alkali-activated rice husk ash for fire-resistant applications." Journal of Building Engineering. 51. https://doi.org/10.1016/j.jobe.2022.104281

Rheology and elevated temperature performance of geopolymer foam concrete with varying PVA fibre dosage

Dhasindrakrishna, K., Pasupathy, Kirubajiny, Ramakrishnan, Sayanthan and Sanjayan, Jay. 2022. "Rheology and elevated temperature performance of geopolymer foam concrete with varying PVA fibre dosage." Materials Letters. 328. https://doi.org/10.1016/j.matlet.2022.133122

In-line activation of cementitious materials for 3D concrete printing

Ramakrishnan, Sayanthan, Kanagasuntharam, Sasitharan and Sanjayan, Jay. 2022. "In-line activation of cementitious materials for 3D concrete printing." Cement and Concrete Composites. 131. https://doi.org/10.1016/j.cemconcomp.2022.104598

Enhancing the properties of foam concrete 3D printing using porous aggregates

Pasupathy, Kirubajiny, Ramakrishnan, Sayanthan and Sanjayan, Jay. 2022. "Enhancing the properties of foam concrete 3D printing using porous aggregates." Cement and Concrete Composites. 133. https://doi.org/10.1016/j.cemconcomp.2022.104687

Synthesis and properties of thermally enhanced aerated geopolymer concrete using form-stable phase change composite

Ramakrishnan, Sayanthan, Pasupathy, Kirubajiny and Sanjayan, Sanjayan. 2021. "Synthesis and properties of thermally enhanced aerated geopolymer concrete using form-stable phase change composite." Journal of Building Engineering. 40. https://doi.org/10.1016/j.jobe.2021.102756

Concrete 3D printing of lightweight elements using hollow-core extrusion of filaments

Ramakrishnan, Sayanthan, Muthukrishnan, Shravan, Sanjayan, Jay and Pasupathy, Kirubajiny. 2021. "Concrete 3D printing of lightweight elements using hollow-core extrusion of filaments." Cement and Concrete Composites. 123. https://doi.org/10.1016/j.cemconcomp.2021.104220

Influence of recycled concrete aggregate on the foam stability of aerated geopolymer concrete

Pasupathy, Kirubajiny, Ramakrishnan, Sayanthan and Sanjayan, Jay. 2021. "Influence of recycled concrete aggregate on the foam stability of aerated geopolymer concrete." Construction and Building Materials. 271. https://doi.org/10.1016/j.conbuildmat.2020.121850

Formulating eco-friendly geopolymer foam concrete by alkali-activation of ground brick waste

Pasupathy, Kirubajiny, Ramakrishnan, Sayanthan and Sanjayan, Jay. 2021. "Formulating eco-friendly geopolymer foam concrete by alkali-activation of ground brick waste." Journal of Cleaner Production. 325. https://doi.org/10.1016/j.jclepro.2021.129180

Technologies for improving buildability in 3D concrete printing

Muthukrishnan, Shravan, Ramakrishnan, Sayanthan and Sanjayan, Jay. 2021. "Technologies for improving buildability in 3D concrete printing." Cement and Concrete Composites. 122. https://doi.org/10.1016/j.cemconcomp.2021.104144

Effect of alkali reactions on the rheology of one-part 3D printable geopolymer concrete

Muthukrishnan, Shravan, Ramakrishnan, Sayanthan and Sanjayan, Jay. 2021. "Effect of alkali reactions on the rheology of one-part 3D printable geopolymer concrete." Cement and Concrete Composites. 116. https://doi.org/10.1016/j.cemconcomp.2020.103899

Collapse of fresh foam concrete: Mechanisms and influencing parameters

Dhasindrakrishna, K., Ramakrishnan, Sayanthan, Pasupathy, Kirubajiny and Sanjayan, Jay. 2021. "Collapse of fresh foam concrete: Mechanisms and influencing parameters." Cement and Concrete Composites. 122. https://doi.org/10.1016/j.cemconcomp.2021.104151

Progress, current thinking and challenges in geopolymer foam concrete technology

Dhasindrakrishna, K., Pasupathy, Kirubajiny, Ramakrishnan, Sayanthan and Sanjayan, Jay. 2021. "Progress, current thinking and challenges in geopolymer foam concrete technology." Cement and Concrete Composites. 116, p. 103886. https://doi.org/10.1016/j.cemconcomp.2020.103886

Effect of microwave heating on interlayer bonding and buildability of geopolymer 3D concrete printing

Muthukrishnan, Shravan, Ramakrishnan, Sayanthan and Sanjayan, Jay. 2020. "Effect of microwave heating on interlayer bonding and buildability of geopolymer 3D concrete printing." Construction and Building Materials. 265. https://doi.org/10.1016/j.conbuildmat.2020.120786

Effect of yield stress development on the foam-stability of aerated geopolymer concrete

Dhasindrakrishna, K., Pasupathy, K., Ramakrishnan, Sayanthan and Sanjayan, Jay. 2020. "Effect of yield stress development on the foam-stability of aerated geopolymer concrete." Cement and Concrete Research. 138. https://doi.org/10.1016/j.cemconres.2020.106233

Effects of various carbon additives on the thermal storage performance of form-stable PCM integrated cementitious composites

Ramakrishnan, Sayanthan, Wang, Xiaoming and Sanjayan, Jay. 2019. "Effects of various carbon additives on the thermal storage performance of form-stable PCM integrated cementitious composites." Applied Thermal Engineering. 148, pp. 491-501. https://doi.org/10.1016/j.applthermaleng.2018.11.025

Thermal enhancement of paraffin/hydrophobic expanded perlite granular phase change composite using graphene nanoplatelets

Ramakrishnan, Sayanthan, Wang, Xiaoming and Sanjayan, Jay. 2018. "Thermal enhancement of paraffin/hydrophobic expanded perlite granular phase change composite using graphene nanoplatelets ." Energy and Buildings. 169, pp. 206-215. https://doi.org/10.1016/j.enbuild.2018.03.053

Experimental and Numerical Study on Energy Performance of Buildings Integrated with Phase Change Materials

Ramakrishnan, Sayanthan, Wang, Xiaoming, Sanjayan, Jay and Wilson, John. 2017. "Experimental and Numerical Study on Energy Performance of Buildings Integrated with Phase Change Materials." 8th International Conference on Applied Energy (ICAE 2016) . Beijing, China 08 201 - 11 Oct 2016 Netherlands. Elsevier. https://doi.org/10.1016/j.egypro.2017.03.627

Thermal Energy Storage Enhancement of Lightweight Cement Mortars with the Application of Phase Change Materials

Ramakrishnan, Sayanthan, Wang, Xiaoming, Sanjayan, Jay and Wilson, John. 2017. "Thermal Energy Storage Enhancement of Lightweight Cement Mortars with the Application of Phase Change Materials." Procedia Engineering. 180, pp. 1170-1177. https://doi.org/10.1016/j.proeng.2017.04.277

Heat Transfer Performance Enhancement of Paraffin/Expanded Perlite Phase Change Composites with Graphene Nano-platelets

Ramakrishnan, Sayanthan, Wang, Xiaoming, Sanjayan, Jay and Wilson, John. 2017. "Heat Transfer Performance Enhancement of Paraffin/Expanded Perlite Phase Change Composites with Graphene Nano-platelets." 8th International Conference on Applied Energy (ICAE 2016) . Beijing, China 08 201 - 11 Oct 2016 Netherlands. Elsevier. https://doi.org/10.1016/j.egypro.2017.03.964

Thermal performance assessment of phase change material integrated cementitious composites in buildings: Experimental and numerical approach

Ramakrishnan, Applied Energy, Wang, Xiaoming, Sanjayan, Sanjayan and Wilson, John. 2017. "Thermal performance assessment of phase change material integrated cementitious composites in buildings: Experimental and numerical approach." Applied Energy. 207, pp. 654-664. https://doi.org/10.1016/j.apenergy.2017.05.144

Assessing the feasibility of integrating form-stable phase change material composites with cementitious composites and prevention of PCM leakage

Ramakrishnan, Sayanthan, Wang, Xiaoming, Sanjayan, Jay and Wilson, John. 2017. "Assessing the feasibility of integrating form-stable phase change material composites with cementitious composites and prevention of PCM leakage." Materials Letters. 192, pp. 88-91. https://doi.org/10.1016/j.matlet.2016.12.052

Thermal performance of buildings integrated with phase change materials to reduce heat stress risks during extreme heatwave events

Ramakrishnan, Sayanthan, Wang, Xiaoming, Sanjayan, Jay and Wilson, John. 2017. "Thermal performance of buildings integrated with phase change materials to reduce heat stress risks during extreme heatwave events." Applied Energy. 194, pp. 410-421. https://doi.org/10.1016/j.apenergy.2016.04.084

Development of thermal energy storage cementitious composites (TESC) containing a novel paraffin/hydrophobic expanded perlite composite phase change material

Ramakrishnan, Sayanthan, Wang, Xiaoming, Sanjayan, Jay, Petinakis, Eustathios and Wilson, John. 2017. "Development of thermal energy storage cementitious composites (TESC) containing a novel paraffin/hydrophobic expanded perlite composite phase change material." Solar Energy. 158, pp. 626-635. https://doi.org/10.1016/j.solener.2017.09.064

A Comparative Study on the Effectiveness of Passive and Free Cooling Application Methods of Phase Change Materials for Energy Efficient Retrofitting in Residential Buildings

Alam, Morshed, Sanjayan, Jay, Zou, Patrick X.W., Ramakrishnan, Sayanthan and Wilson, John. 2017. "A Comparative Study on the Effectiveness of Passive and Free Cooling Application Methods of Phase Change Materials for Energy Efficient Retrofitting in Residential Buildings." Procedia Engineering. 180, pp. 993-1002. https://doi.org/10.1016/j.proeng.2017.04.259

Evaluating the passive and free cooling application methods of phase change materials in residential buildings: A comparative study

Alam, Morshed, Sanjayan, Jay, Zou, Patrick X.W., Ramakrishnan, Sayanthan and Wilson, John. 2017. "Evaluating the passive and free cooling application methods of phase change materials in residential buildings: A comparative study." Energy and Buildings. 148, pp. 238-256. https://doi.org/10.1016/j.enbuild.2017.05.018

Application of Phase Change Materials to Reduce Heat Related Risks During Extreme Heat Waves in Australian Dwellings

Ramakrishnan, Sayanthan, Wang, Xiaoming, Sanjayan, Jay and Wilson, John. 2016. "Application of Phase Change Materials to Reduce Heat Related Risks During Extreme Heat Waves in Australian Dwellings." Applied Energy Symposium and Summit 2015 (CUE 2015). Fuzhou, China 15 - 17 Nov 2015 Netherlands. Elsevier. https://doi.org/10.1016/j.egypro.2016.06.052

A novel paraffin/expanded perlite composite phase change material for prevention of PCM leakage in cementitious composites

Ramakrishnan, Sayanthan, Sanjayan, Jay, Wang, Xiaoming, Alam, Morshed and Wilson, John. 2015. "A novel paraffin/expanded perlite composite phase change material for prevention of PCM leakage in cementitious composites." Applied Energy. 157, pp. 85-94. https://doi.org/10.1016/j.apenergy.2015.08.019

Rheological, mechanical and fire resistance performance of waste glass activated geopolymers for concrete 3D printing

Ramakrishnan, Sayanthan, Pasupathy, Kirubajiny, Manalo, Allan C. and Sanjayan, Jay. 2025. "Rheological, mechanical and fire resistance performance of waste glass activated geopolymers for concrete 3D printing." Journal of Sustainable Cement-Based Materials. https://doi.org/10.1080/21650373.2025.2529994

Alkali-Activated Waste Glass-Based Geopolymer Concrete for Digital Construction

Pasupathy, Kirubajiny, Ramakrishnan, Sayanthan, Mechtcherine, Viktor and Sanjayan, Jay. 2024. "Alkali-Activated Waste Glass-Based Geopolymer Concrete for Digital Construction." 4th International Conference on 3D Construction Printing (4-IC3DcP). Singapore 19 - 21 Jul 2023 Switzerland . Springer. https://doi.org/10.1007/978-3-031-64269-2_29

Two-Part Print Head Mixing of Hybrid Alkali-Activated Cement for Buildability Enhancement in 3D Concrete Printing

Ramakrishnan, Sayanthan, Pasupathy, Kirubajiny, Mechtcherine, Viktor and Sanjayan, Jay. 2024. "Two-Part Print Head Mixing of Hybrid Alkali-Activated Cement for Buildability Enhancement in 3D Concrete Printing." 4th International Conference on 3D Construction Printing (4-IC3DcP). Singapore 19 - 21 Jul 2023 Switzerland . Springer. https://doi.org/10.1007/978-3-031-64269-2_2

Active Rheology Control of Concrete Using Encapsulated Accelerator as Responsive Additives for Concrete 3D Printing

Kanagasuntharam, Sasithar, Ramakrishnan, Sayanthan and Sanjayan, Jay. 2024. "Active Rheology Control of Concrete Using Encapsulated Accelerator as Responsive Additives for Concrete 3D Printing." 4th RILEM International Conference on Concrete and Digital Fabrication. Munich, Germany 04 - 06 Sep 2024 Germany. Springer. https://doi.org/10.1007/978-3-031-70031-6_29

Encapsulation of sodium silicate to attain on demand buildability enhancement in concrete 3D printing

Kanagasuntharam, Sasitharan, Ramakrishnan, Saya and Sanjayan, Jay. 2024. "Encapsulation of sodium silicate to attain on demand buildability enhancement in concrete 3D printing." Journal of Building Engineering. 94. https://doi.org/10.1016/j.jobe.2024.109912

Investigating PCM encapsulated NaOH additive for set-on-demand in 3D concrete printing

Kanagasuntharam, Sasitharan, Ramakrishnan, Sayanthan and Sanjayan, Jay. 2024. "Investigating PCM encapsulated NaOH additive for set-on-demand in 3D concrete printing." Cement and Concrete Composites. 145. https://doi.org/10.1016/j.cemconcomp.2023.105313

Fresh and Hardened Properties of 3D Printable Foam Concrete Containing Porous Aggregates

Pasupathy, Kirubajiny, Ramakrishnan, Sayanthan and Sanjayan, Jay. 2022. "Fresh and Hardened Properties of 3D Printable Foam Concrete Containing Porous Aggregates." 3rd RILEM International Conference on Concrete and Digital Fabrication. Loughborough, United Kingdom 27 - 29 Jun 2022 Springer. https://doi.org/10.1007/978-3-031-06116-5_10

Buildability of geopolymer concrete for 3D printing with microwave heating

Muthukrishnan, Shravan, Ramakrishnan, Sayanthan and Sanjayan, Jay. 2020. "Buildability of geopolymer concrete for 3D printing with microwave heating." 2nd RILEM International Conference on Concrete and Digital Fabrication. 06 - 09 Jul 2020 Springer. https://doi.org/10.1007/978-3-030-49916-7_90

Enhancing the mechanical and thermal properties of aerated geopolymer concrete using porous lightweight aggregates

Pasupathy, Kirubajiny, Ramakrishnan, Sayanthan and Sanjayan, Jay. 2020. "Enhancing the mechanical and thermal properties of aerated geopolymer concrete using porous lightweight aggregates." Construction and Building Materials. 264. https://doi.org/10.1016/j.conbuildmat.2020.120713

Thermal and mechanical properties of sustainable lightweight strain hardening geopolymer composites

Nematollahi, Behzad, Ranade, Ravi, Sanjayan, Jay and Ramakrishnan, Sayanthan. 2019. "Thermal and mechanical properties of sustainable lightweight strain hardening geopolymer composites." Archives of Civil and Mechanical Engineering. 17 (1), pp. 55-64. https://doi.org/10.1016/j.acme.2016.08.002

Experimental research on using form-stable PCM-integrated cementitious composite for reducing overheating in buildings

Ramakrishnan, Sayanthan, Sanjayan, Jay and Wang, Xiaoming. 2019. "Experimental research on using form-stable PCM-integrated cementitious composite for reducing overheating in buildings." Buildings. https://doi.org/10.3390/buildings9030057

Energy saving performance assessment and lessons learned from the operation of an active phase change materials system in a multi-storey building in Melbourne

Alam, Morshed, Zou, Patrick X.W., Sanjayan, Jay and Ramakrishnan, Sayanthan. 2019. "Energy saving performance assessment and lessons learned from the operation of an active phase change materials system in a multi-storey building in Melbourne." Applied Energy. 238, pp. 1582-1595. https://doi.org/10.1016/j.apenergy.2019.01.116

Parametric analysis for performance enhancement of phase change materials in naturally ventilated buildings

Ramakrishnan, Sayanthan, Wang, Xiaoming, Alam, Morshed, Sanjayan, Jay and Wilson, John. 2016. "Parametric analysis for performance enhancement of phase change materials in naturally ventilated buildings." Energy and Buildings. 124, pp. 35-45. https://doi.org/10.1016/j.enbuild.2016.04.065