Associate Professor Ailar Hajimohammadi

Associate Professor Ailar Hajimohammadi

Associate Professor

PhD in Sustainable construction materials and geopolymers, University of Melbourne, Australia.

MEngSc in Chemical Engineering, Sharif University of Technology, Iran.

Engineering
Civil and Environmental Engineering

Associate Professor at the School of Civil and Environmental Engineering

A/Prof Ailar Hajimohammadi received her Ph.D. on sustainable cementitious materials from the University of Melbourne in 2011. She worked in the international technology company AspenTech for four years (2011-2015) where she gained experience in industry consultation and training. She did three years of postdoctoral research at the Infrastructure Engineering Department, University of Melbourne (2015-2018) before joining the faculty at the University of New South Wales. Ailar’ s research examines the chemistry of materials to develop innovative construction elements with attractive properties. She is also investigating waste management and resource recovering strategies towards circular economy in civil and construction projects.

Phone
(+61 2) 9385 5066
Location
Civil Engineering Building (H20) Kensington Campus
  • Book Chapters | 2009
    Provis JL; Hajimohammadi A; Rees CA; Van Deventer JSJ, 2009, 'Analysing and manipulating the nanostructure of geopolymers', in Bittnar Z; Bartos PJM; Nemecek J; Smilauer V; Zeman J (ed.), Nanotechnology in Construction 3, Springer, Berlin, Heidelberg, pp. 113 - 118, http://dx.doi.org/10.1007/978-3-642-00980-8_14
  • Journal articles | 2024
    Alnahhal MF; Hamdan A; Hajimohammadi A; Castel A; Kim T, 2024, 'Hydrothermal synthesis of sodium silicate from rice husk ash: Effect of synthesis on silicate structure and transport properties of alkali-activated concrete', Cement and Concrete Research, 178, http://dx.doi.org/10.1016/j.cemconres.2024.107461
    Journal articles | 2023
    Hamdan A; Hajimohammadi A; Njegic B; Kim T, 2023, 'The changes in the reaction kinetics and phase assemblage of sodium silicate-activated CaO-MgO-Al2O3-SiO2 glasses induced by the Al replacement by Mg', Cement and Concrete Research, 166, http://dx.doi.org/10.1016/j.cemconres.2023.107103
    Journal articles | 2023
    Hamdan A; Hajimohammadi A; Rawal A; Kim T, 2023, 'The intrinsic role of network modifiers (Ca versus Mg) in the reaction kinetics and microstructure of sodium silicate-activated CaO-MgO-Al2O3-SiO2 glasses', Cement and Concrete Research, 164, pp. 107058 - 107058, http://dx.doi.org/10.1016/j.cemconres.2022.107058
    Journal articles | 2023
    Hamdan A; Song H; Yao Z; Alnahhal MF; Kim T; Hajimohammadi A, 2023, 'Modifications to reaction mechanisms, phase assemblages and mechanical properties of alkali-activated slags induced by gypsum addition', Cement and Concrete Research, 174, http://dx.doi.org/10.1016/j.cemconres.2023.107311
    Journal articles | 2023
    Heydari S; Hajimohammadi A; Haji Seyed Javadi N; Jeremy Kien Chung Ng J; Emmanuel Kypreos J; Khalili N, 2023, 'Modified asphalt by coffee cup Fibres: An optimum mix design using response surface method', Construction and Building Materials, 401, http://dx.doi.org/10.1016/j.conbuildmat.2023.133005
    Journal articles | 2023
    Li J; Hajimohammadi A; Yu Y; Lee BY; Kim T, 2023, 'Mechanism of PVA Fiber Influence in Foam Concrete: From Macroscopic to Microscopic View', Journal of Materials in Civil Engineering, 35, http://dx.doi.org/10.1061/JMCEE7.MTENG-16124
    Journal articles | 2023
    Li J; Yu Y; Kim T; Hajimohammadi A, 2023, 'Unveiling the underlying mechanisms of tensile behaviour enhancement in fibre reinforced foam concrete', Construction and Building Materials, 398, http://dx.doi.org/10.1016/j.conbuildmat.2023.132509
    Journal articles | 2023
    Siddika A; Hajimohammadi A; Sahajwalla V, 2023, 'A novel eco-friendly foaming technique for developing sustainable glass foams from the waste glass', Resources, Conservation and Recycling, 190, http://dx.doi.org/10.1016/j.resconrec.2022.106801
    Journal articles | 2023
    Siddika A; Hajimohammadi A; Sahajwalla V, 2023, 'Alkali-activated foam: Understanding the relationship between rheology, activator-precursor interaction, and pore characteristics', Construction and Building Materials, 409, http://dx.doi.org/10.1016/j.conbuildmat.2023.134111
    Journal articles | 2022
    Hajimohammadi A; Masoumi S; Kim T; McCaslin E; Alnahhal MF; Almer JD; White CE, 2022, 'Chemo-mechanical properties of carbon fiber reinforced geopolymer interphase', Journal of the American Ceramic Society, 105, pp. 1519 - 1532, http://dx.doi.org/10.1111/jace.18150
    Journal articles | 2022
    Hamdan A; Kim T; Hajimohammadi A; Alnahhal MF; Rawal A, 2022, 'Synthesis of chemically controlled cementitious materials using organic steric entrapment (OSE) method: Process, advantages, and characterisation', Cement and Concrete Research, 153, http://dx.doi.org/10.1016/j.cemconres.2021.106698
    Journal articles | 2022
    Hamdan A; Kim T; Hajimohammadi A, 2022, 'Quantitative description of the effect of slag surface area on its reaction kinetics in sodium silicate‐activated materials', RILEM Technical Letters, 7, pp. 150 - 158, http://dx.doi.org/10.21809/rilemtechlett.2022.167
    Journal articles | 2022
    Siddika A; Hajimohammadi A; Mamun MAA; Alyousef R; Ferdous W, 2022, 'Correction to: Siddika et al. Waste Glass in Cement and Geopolymer Concretes: A Review on Durability and Challenges. (Polymers (2021), 13, 2071', Polymers, 14, http://dx.doi.org/10.3390/polym14061068
    Journal articles | 2022
    Siddika A; Hajimohammadi A; Sahajwalla V, 2022, 'Powder sintering and gel casting methods in making glass foam using waste glass: A review on parameters, performance, and challenges', Ceramics International, 48, pp. 1494 - 1511, http://dx.doi.org/10.1016/j.ceramint.2021.10.066
    Journal articles | 2022
    Siddika A; Hajimohammadi A; Sahajwalla V, 2022, 'Stabilisation of pores in glass foam by using a modified curing-sintering process: sustainable recycling of automotive vehicles’ waste glass', Resources, Conservation and Recycling, 179, http://dx.doi.org/10.1016/j.resconrec.2021.106145
    Journal articles | 2021
    Alnahhal MF; Hamdan A; Hajimohammadi A; Kim T, 2021, 'Effect of rice husk ash-derived activator on the structural build-up of alkali activated materials', Cement and Concrete Research, 150, http://dx.doi.org/10.1016/j.cemconres.2021.106590
    Journal articles | 2021
    Alnahhal MF; Kim T; Hajimohammadi A, 2021, 'Distinctive rheological and temporal viscoelastic behaviour of alkali-activated fly ash/slag pastes: A comparative study with cement paste', Cement and Concrete Research, 144, http://dx.doi.org/10.1016/j.cemconres.2021.106441
    Journal articles | 2021
    Alnahhal MF; Kim T; Hajimohammadi A, 2021, 'Waste-derived activators for alkali-activated materials: A review', Cement and Concrete Composites, 118, http://dx.doi.org/10.1016/j.cemconcomp.2021.103980
    Journal articles | 2021
    Heydari S; Hajimohammadi A; Haji Seyed Javadi N; Khalili N, 2021, 'The use of plastic waste in asphalt: A critical review on asphalt mix design and Marshall properties', Construction and Building Materials, 309, http://dx.doi.org/10.1016/j.conbuildmat.2021.125185
    Journal articles | 2021
    Siddika A; Hajimohammadi A; Ferdous W; Sahajwalla V, 2021, 'Roles of waste glass and the effect of process parameters on the properties of sustainable cement and geopolymer concrete—a state-of-the-art review', Polymers, 13, http://dx.doi.org/10.3390/polym13223935
    Journal articles | 2021
    Siddika A; Hajimohammadi A; Mamun MAA; Alyousef R; Ferdous W, 2021, 'Waste glass in cement and geopolymer concretes: A review on durability and challenges', Polymers, 13, http://dx.doi.org/10.3390/polym13132071
    Journal articles | 2021
    Siddika A; Mamun MAA; Aslani F; Zhuge Y; Alyousef R; Hajimohammadi A, 2021, 'Cross-laminated timber–concrete composite structural floor system: A state-of-the-art review', Engineering Failure Analysis, 130, http://dx.doi.org/10.1016/j.engfailanal.2021.105766
    Journal articles | 2020
    Alnahhal MF; Kim T; Hajimohammadi A, 2020, 'Evolution of flow properties, plastic viscosity, and yield stress of Alkali-activated fly ash/slag pastes', RILEM Technical Letters, 5, pp. 141 - 149, http://dx.doi.org/10.21809/rilemtechlett.2020.123
    Journal articles | 2020
    Delhomme F; Hajimohammadi A; Almeida A; Jiang C; Moreau D; Gan Y; Wang X; Castel A, 2020, 'Physical properties of Australian hurd used as aggregate for hemp concrete', Materials Today Communications, 24, http://dx.doi.org/10.1016/j.mtcomm.2020.100986
    Journal articles | 2020
    Kashani A; Ngo TD; Nguyen TN; Hajimohammadi A; Sinaie S; Mendis P, 2020, 'The effects of surfactants on properties of lightweight concrete foam', Magazine of Concrete Research, 72, pp. 163 - 172, http://dx.doi.org/10.1680/jmacr.18.00242
    Journal articles | 2019
    Hajimohammadi A; Ngo T; Provis JL; Kim T; Vongsvivut J, 2019, 'High strength/density ratio in a syntactic foam made from one-part mix geopolymer and cenospheres', Composites Part B: Engineering, 173, http://dx.doi.org/10.1016/j.compositesb.2019.106908
    Journal articles | 2019
    Hajimohammadi A; Ngo T; Vongsvivut J, 2019, 'Interfacial chemistry of a fly ash geopolymer and aggregates', Journal of Cleaner Production, 231, pp. 980 - 989, http://dx.doi.org/10.1016/j.jclepro.2019.05.249
    Journal articles | 2019
    Kashani A; Ngo TD; Hajimohammadi A, 2019, 'Effect of recycled glass fines on mechanical and durability properties of concrete foam in comparison with traditional cementitious fines', Cement and Concrete Composites, 99, pp. 120 - 129, http://dx.doi.org/10.1016/j.cemconcomp.2019.03.004
    Journal articles | 2019
    Kim T; Alnahhal MF; Nguyen QD; Panchmatia P; Hajimohammadi A; Castel A, 2019, 'Initial sequence for alkali-silica reaction: Transport barrier and spatial distribution of reaction products', Cement and Concrete Composites, 104, pp. 103378 - 103378, http://dx.doi.org/10.1016/j.cemconcomp.2019.103378
    Journal articles | 2019
    Kristombu Baduge S; Mendis P; San Nicolas R; Nguyen K; Hajimohammadi A, 2019, 'Performance of lightweight hemp concrete with alkali-activated cenosphere binders exposed to elevated temperature', Construction and Building Materials, 224, pp. 158 - 172, http://dx.doi.org/10.1016/j.conbuildmat.2019.07.069
    Journal articles | 2019
    Liu L; Miramini S; Hajimohammadi A, 2019, 'Characterising fundamental properties of foam concrete with a non-destructive technique', Nondestructive Testing and Evaluation, 34, pp. 54 - 69, http://dx.doi.org/10.1080/10589759.2018.1525378
    Journal articles | 2018
    Bagheri A; Nazari A; Hajimohammadi A; Sanjayan JG; Rajeev P; Nikzad M; Ngo T; Mendis P, 2018, 'Microstructural study of environmentally friendly boroaluminosilicate geopolymers', Journal of Cleaner Production, 189, pp. 805 - 812
    Journal articles | 2018
    Hajimohammadi A; Ngo T; Kashani A, 2018, 'Glass waste versus sand as aggregates: The characteristics of the evolving geopolymer binders', Journal of Cleaner Production, 193, pp. 593 - 603
    Journal articles | 2018
    Hajimohammadi A; Ngo T; Kashani A, 2018, 'Sustainable one-part geopolymer foams with glass fines versus sand as aggregates', Construction and Building Materials, 171, pp. 223 - 231
    Journal articles | 2018
    Hajimohammadi A; Ngo T; Mendis P, 2018, 'Enhancing the strength of pre-made foams for foam concrete applications', Cement and Concrete Composites, 87, pp. 164 - 171
    Journal articles | 2018
    Kashani A; Ngo TD; Hemachandra P; Hajimohammadi A, 2018, 'Effects of surface treatments of recycled tyre crumb on cement-rubber bonding in concrete composite foam', Construction and Building Materials, 171, pp. 467 - 473
    Journal articles | 2018
    Kashani A; Ngo TD; Nguyen TN; Hajimohammadi A; Sinaie S; Mendis P, 2018, 'The effects of surfactants on properties of lightweight concrete foam', Magazine of Concrete Research, pp. 1 - 10
    Journal articles | 2018
    Liu L; Miramini S; Hajimohammadi A, 2018, 'Characterising fundamental properties of foam concrete with a non-destructive technique', Nondestructive Testing and Evaluation, pp. 1 - 16
    Journal articles | 2017
    Hajimohammadi A; Ngo T; Mendis P; Kashani A; van Deventer JSJ, 2017, 'Alkali activated slag foams: the effect of the alkali reaction on foam characteristics', Journal of Cleaner Production, 147, pp. 330 - 339
    Journal articles | 2017
    Hajimohammadi A; Ngo T; Mendis P; Nguyen T; Kashani A; van Deventer JSJ, 2017, 'Pore characteristics in one-part mix geopolymers foamed by H2O2: The impact of mix design', Materials & Design, 130, pp. 381 - 391
    Journal articles | 2017
    Hajimohammadi A; Ngo T; Mendis P; Sanjayan J, 2017, 'Regulating the chemical foaming reaction to control the porosity of geopolymer foams', Materials & Design, 120, pp. 255 - 265
    Journal articles | 2017
    Hajimohammadi A; Ngo T; Mendis P, 2017, 'How does aluminium foaming agent impact the geopolymer formation mechanism?', Cement and Concrete Composites, 80, pp. 277 - 286
    Journal articles | 2017
    Hajimohammadi A; van Deventer JSJ, 2017, 'Characterisation of one-part geopolymer binders made from fly ash', Waste and Biomass Valorization, 8, pp. 225 - 233
    Journal articles | 2017
    Hajimohammadi A; van Deventer JSJ, 2017, 'Solid reactant-based geopolymers from rice hull ash and sodium aluminate', Waste and Biomass Valorization, 8, pp. 2131 - 2140
    Journal articles | 2017
    Kashani A; Ngo TD; Mendis P; Black JR; Hajimohammadi A, 2017, 'A sustainable application of recycled tyre crumbs as insulator in lightweight cellular concrete', Journal of cleaner production, 149, pp. 925 - 935
    Journal articles | 2017
    Ngo T; Hajimohammadi A; Sanjayan J; Mendis P, 2017, 'Characterisation tests and design of foam concrete for prefabricated modular construction', Concrete Institute of Australia, 43, pp. 43 - 50
    Journal articles | 2016
    Hajimohammadi A; van Deventer JSJ, 2016, 'Dissolution behaviour of source materials for synthesis of geopolymer binders: a kinetic approach', International Journal of Mineral Processing, 153, pp. 80 - 86
    Journal articles | 2013
    Hajimohammadi AR; Khojasteh A; Rahimian M; Pak RYS, 2013, 'Vertical vibration of a rigid circular disc at the interface of a transversely isotropic bi-material', International Journal of Solids and Structures, 50, pp. 2772 - 2780, http://dx.doi.org/10.1016/j.ijsolstr.2013.04.024
    Journal articles | 2013
    Provis JL; Hajimohammadi A; White CE; Bernal SA; Myers RJ; Winarski RP; Rose V; Proffen TE; Llobet A; van Deventer JSJ, 2013, 'Nanostructural characterization of geopolymers by advanced beamline techniques', Cement and Concrete Composites, 36, pp. 56 - 64
    Journal articles | 2011
    Hajimohammadi A; Provis JL; Van Deventer JSJ, 2011, 'Time-resolved and spatially-resolved infrared spectroscopic observation of seeded nucleation controlling geopolymer gel formation', Journal of colloid and interface science, 357, pp. 384 - 392
    Journal articles | 2011
    Hajimohammadi A; Provis JL; van Deventer JSJ, 2011, 'The effect of silica availability on the mechanism of geopolymerisation', Cement and Concrete Research, 41, pp. 210 - 216
    Journal articles | 2010
    Hajimohammadi A; Provis JL; Van Deventer JSJ, 2010, 'Effect of alumina release rate on the mechanism of geopolymer gel formation', Chemistry of Materials, 22, pp. 5199 - 5208
    Journal articles | 2010
    Mir Mohammad Hosseini SM; Hajimohammadi AA; Hajimohammadi AR, 2010, 'The validity assesment of laboratory shear modolus using in-situ seismic piezocone test results', International Journal of Civil Engineering, 8, pp. 134 - 142
    Journal articles | 2008
    Hajimohammadi A; Provis JL; Van Deventer JSJ, 2008, 'One-part geopolymer mixes from geothermal silica and sodium aluminate', Industrial & Engineering Chemistry Research, 47, pp. 9396 - 9405
    Journal articles | 2006
    Hajimohammadi A; Taghikhani V; Ghotbi, Cyrus, Nemati Lay, Ebrahim , 2006, 'On the Selection of Proper Thermodynamic Conditions for the Gas Antisolvent Process (GAS) at Nearcritical and Supercritical Conditions', Iranian Journal of Chemical Engineering, 3, pp. 17 - 22
  • Conference Papers | 2022
    Li J; Hajimohammadi A; Kim T, 2022, 'The influence of PVA fibres on mechanical properties of foam concrete', in fib Symposium, pp. 721 - 727
    Conference Papers | 2021
    Siddika A; Hajimohammadi A; Sahajwalla V, 2021, 'Recycling of Automotive Vehicle’s Waste Glass to Develop Sustainable Glass Foam using a Curing-Sintering Process', Concrete Institute of Australia, Australia, presented at Concrete Institute of Australia’s Biennial National Conference (Concrete 2021), Australia, 05 September 2021 - 08 September 2021, http://www.ciaconference.com.au/concrete2021/pdf/full-paper_168.pdf
    Conference Papers | 2020
    Alnahhal M; Kim T; Hajimohammadi A, 2020, 'Rheological Behaviour and Flow Properties of Alkali-Activated Materials', Guimaraes, Portugal, presented at the 3rd RILEM Spring Convention and Conference (RSCC 2020), Guimaraes, Portugal, 09 March 2020 - 14 March 2020, http://dx.doi.org/10.1007/978-3-030-76551-4_24
    Conference Papers | 2018
    Al-Dujaili A; N. E; Sanjayan J; A. H, 2018, 'Effect of Shrinkage and Density on the Fire Insulation of Lightweight Composite Sandwich Panels', presented at Fib congress 2018
    Conference Papers | 2018
    Al-Dujaili A; Neghban E; Sanjayan J; Hajimohammadi A, 2018, 'Effect of shrinkage and density on the fire insulation of lightweight composite sandwich panels', in fib Symposium, pp. 2361 - 2376
    Conference Papers | 2018
    Hajimohammadi A; Ngo T, 2018, 'A Novel Non-Combustible Lightweight Core for Prefabricated Sandwich Panels', presented at fib Congress 2018
    Conference Papers | 2018
    Hajimohammadi A; Ngo T, 2018, 'A novel non-combustible lightweight core for prefabricated sandwich panels', in fib Symposium, pp. 3851 - 3854
    Conference Papers | 2016
    Hajimohammadi A; Ngo T; Mendis P, 2016, 'The effect of aluminium reaction on formation mechanism and structural properties of geopolymers', CRC Press, pp. 433, presented at Mechanics of Structures and Materials XXIV: Proceedings of the 24th Australian Conference on the Mechanics of Structures and Materials (ACMSM24, Perth, Australia, 6-9 December 2016)
    Conference Papers | 2009
    Hajimohammadi A; Provis JL; van Deventer JSJ, 2009, 'The effect of nanoparticle seeding on the mechanism of one-part geopolymer gel formation', pp. 23 - 27, presented at proceedings of 8th World Congress of Chemical Engineering (WCCE8), Montreal, Canada
    Preprints |
    Hamdan APS; Hajimohammadi A; Njegic B; Kim T, The Changes in the Reaction Kinetics and Phase Assemblage of Sodium Silicate-Activated Cao-Mgo-Al2o3-Sio2 Glasses Induced by the Al Replacement by Mg, , http://dx.doi.org/10.2139/ssrn.4290392
    Preprints |
    Hamdan APS; Hajimohammadi A; Rawal A; Kim T, The Intrinsic Role of Network Modifiers (Ca Versus Mg) in the Reaction Kinetics and Microstructure of Sodium Silicate-Activated Cao-Mgo-Al2o3-Sio2 Glasses, , http://dx.doi.org/10.2139/ssrn.4211338

  • 72 hours of beamtime (PDF-CT), Advance Photon Source,  USA (~$57,600)
  • School of Engineering International Fellowship ($8000)
  • 24 hours of Neutron beamtime, Oak Ridge National Lab, USA (~$45,269)
  • 96 hours of Australian Synchrotron beamtime (~$76,800 )
  • Dyson Fellowship, international mobility grant (~5000)
  • Sustainability Victoria research grant ($100,000) 
  • 96 hours Synchrotron FTIR beamtime, Australian Synchrotron (~$76,800)

  • The Award of Excellence, Aspen Technology Field Operations, industry award ($5000)
  • $1250 MATS travel scholarship, University of Melbourne
  • $1000 RT-CAS travel scholarship, University of Melbourne
  • $1000 travel assistance scholarship, PFPC centre
  • $2000 travel grant, Geopolymer Alliance
  • one of the positions for the Cheiron Synchrotron School at Spring 8 in Japan ($5000)
  • $30,000 Scholarship from industry “Geopolymer Alliance”
  •  $1200 Travelling scholarship, NSRRC (Taiwan).
  • Ian Potter Foundation $1500 travel grant

Research interests:

Sustainable and resilient construction materials 

  • Geopolymers
  • Alkali activated binders 
  • Blended cements
  • Carbon negative construction elements

Waste minimization and resource recovery in civil and construction

  • Circular economy in civil and construction projects
  • Prefabrication and 3D printing
  • Uptake of wastes in construction
  • Converting wastes into useful products

Advanced materials for sustainable infrastructure

  • Cement foam, geopolymer foam
  • Thermal Insulators and acoustic barriers 
  • Impact resistance
  • Fire resistance