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Dr Mohammed Alnahhal

Dr Mohammed Alnahhal

Research Associate

2022  PhD (Civil Engineering) - University of New South Wales, Sydney, Australia

2017  MEngSc (Structural Engineering & Materials) - University of Malaya, Kuala Lumpur, Malaysia

2015 Bachelor of Civil Engineering - The Islamic University of Gaza, Gaza, Palestine

Engineering
Civil and Environmental Engineering

Dr Mohammed Alnahhal is a Postdoctoral Research Associate at the School of Civil & Environmental Engineering, UNSW Sydney, specialising in the development of innovative construction materials. He completed his PhD in Structural Engineering & Materials from UNSW in 2022. His expertise includes rheology of cementitious materials, concrete durability, alkali-activated materials, and microstructural analysis.
E-mail
m.alnahhal@unsw.edu.au
Location
Civil Engineering Building (H20) Kensington Campus
  • Book Chapters | 2023
    Nguyen Q; Gomes S; Alnahhal M; Li W; Kim T; Castel A, 2023, 'Testing Geopolymer Concrete Performance in Chloride Environment', in International RILEM Conference on Synergising expertise towards sustainability and robustness of CBMs and concrete structures Volume 2, Springer Link, http://dx.doi.org/10.1007/978-3-031-33187-9_111
  • 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; 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, pp. 107311, http://dx.doi.org/10.1016/j.cemconres.2023.107311
    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 | 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 | 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 | 2019
    Ghayeb HH; Razak HA; Sulong NHR; Hanoon AN; Abutaha F; Ibrahim HA; Gordan M; Alnahhal MF, 2019, 'Predicting the mechanical properties of concrete using intelligent techniques to reduce CO2 emissions', Materiales de Construccion, 69, http://dx.doi.org/10.3989/mc.2019.07018
    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 | 2018
    Alnahhal MF; Alengaram UJ; Jumaat MZ; Abutaha F; Alqedra MA; Nayaka RR, 2018, 'Assessment on engineering properties and CO2 emissions of recycled aggregate concrete incorporating waste products as supplements to Portland cement', Journal of Cleaner Production, 203, pp. 822 - 835, http://dx.doi.org/10.1016/j.jclepro.2018.08.292
    Journal articles | 2018
    Alnahhal MF; Alengaram UJ; Jumaat MZ; Alsubari B; Alqedra MA; Mo KH, 2018, 'Effect of aggressive chemicals on durability and microstructure properties of concrete containing crushed new concrete aggregate and non-traditional supplementary cementitious materials', Construction and Building Materials, 163, pp. 482 - 495, http://dx.doi.org/10.1016/j.conbuildmat.2017.12.106
    Journal articles | 2018
    Alsubari B; Shafigh P; Ibrahim Z; Alnahhal MF; Jumaat MZ, 2018, 'Properties of eco-friendly self-compacting concrete containing modified treated palm oil fuel ash', Construction and Building Materials, 158, pp. 742 - 754, http://dx.doi.org/10.1016/j.conbuildmat.2017.09.174
    Journal articles | 2018
    Nayaka RR; Alengaram UJ; Jumaat MZ; Yusoff SB; Alnahhal MF, 2018, 'High volume cement replacement by environmental friendly industrial by-product palm oil clinker powder in cement – lime masonry mortar', Journal of Cleaner Production, 190, pp. 272 - 284, http://dx.doi.org/10.1016/j.jclepro.2018.03.291
    Journal articles | 2017
    Alnahhal MF; Alengaram UJ; Jumaat MZ; Alqedra MA; Mo KH; Sumesh M, 2017, 'Evaluation of industrial by-products as sustainable pozzolanic materials in recycled aggregate concrete', Sustainability (Switzerland), 9, http://dx.doi.org/10.3390/su9050767
    Journal articles | 2017
    Sumesh M; Alengaram UJ; Jumaat MZ; Mo KH; Alnahhal MF, 2017, 'Incorporation of nano-materials in cement composite and geopolymer based paste and mortar – A review', Construction and Building Materials, 148, pp. 62 - 84, http://dx.doi.org/10.1016/j.conbuildmat.2017.04.206
  • 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

2022 Global Talent Independent program (GTI)

2018  Australian Government Research Training Program (RTP) Scholarship

2018 ITEX 2018 Gold Medal

2015 Graduate Research Assistantship Scheme (GRAS)

 

My research focuses on the development and optimisation of innovative construction materials with a strong emphasis on sustainability and performance enhancement. I am actively involved in the following areas:

  1. Rheology of Cement and Alkali-Activated Materials: I conduct experimental and analytical investigations to understand the flow behaviour of cementitious and alkali-activated materials, aiming to optimise the workability and performance of fresh concrete.

  2. Concrete Durability and Microstructural Analysis: I explore the long-term durability properties of traditional and alternative concrete materials, focusing on factors like resistance to chemical attacks. Through microstructural analysis using advanced techniques (SEM, XRD, etc.), I examine the internal structure and composition of these materials to enhance their durability and service life.

  3. Sustainability and CO2 Reduction: Assessing the potential for using industrial by-products to reduce CO2 emissions and enhance the eco-friendliness of concrete.