Editor - Andrie Harmaji

Dr. Andrie Harmaji, S.T., M.T.

Dr. Andrie Harmaji, S.T., M.T.

Department of Applied Sciences, Université du Québec à Chicoutimi, Canada
Expertise: Geopolymer, Dental Material, Materials Characterization
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Dr. Andrie Harmaji, S.T., M.T. is an Indonesian academic, engineer, and senior researcher with a deep specialization in the field of Materials Engineering, particularly in geopolymer-based eco-friendly materials and industrial waste valorization. His academic journey is deeply rooted in the Bandung Institute of Technology (ITB), where he completed his Bachelor's (S.T.) in 2012 and Master's (M.T.) in 2015 at the Department of Materials Engineering. Driven by a commitment to advancing global circular technology, he expanded his academic horizons to the international level by pursuing a Doctor of Philosophy (PhD) at the Université du Québec à Chicoutimi (UQAC), Canada, with a cutting-edge research focus on the development of multifunctional geopolymer materials sourced from bauxite residue.

In the professional realm, he has a solid track record as an educator and structural engineering practitioner. He served for a considerable time in the Department of Metallurgical Engineering at the Institut Teknologi Sains Bandung (ITSB), holding various strategic positions ranging from Assistant Professor and Department Secretary to Head of the Heat Treatment Laboratory. His professional contributions are also reflected through his roles as a senior researcher at the Advanced Materials Processing Laboratory at ITB and a material strength testing engineer at the ITB Structural Engineering Laboratory. His globally recognized research reputation led him to engage in international research collaborations, one of which was at the Concrete Laboratory, Yokohama National University (YNU), Japan.

As a highly dedicated scientist, he actively strengthens the materials research ecosystem through the Indonesian Geopolymer Research Consortium (KORIGI) as a senior researcher. His scientific portfolio includes dozens of publications in reputable international journals focusing on eco-friendly cement, alkali activation, and the recycling of plastic waste into sustainable construction materials. Thanks to his scientific dedication, he has successfully achieved various prestigious awards and grants, including the Mitacs Globalink Research Award which supported his research in Japan, as well as international research funding from the Fonds de recherche du Québec during his doctoral studies in Canada. This dedication affirms his position as one of Indonesia's sustainable materials experts who actively bridges laboratory innovations with the ecological solutions of modern industry.

List of Scientific Publications

No.YearPublication TitleJournal / Publisher
1 2026 Performance of self-compacting geopolymer incorporating untreated volcanic mud as partial fine aggregate replacement Next Materials 13, 103546
2 2026 Enhancing Properties of Metakaolin-Based Geopolymers: The Effect of Zirconia and Silica Nanosphere Additions Physics and Chemistry of Solid State 27 (1), 35-43
3 2026 Effect of Chemical Admixtures on the Setting Time and Freeze–Thaw Resistance of Waste-Based Geopolymers Journal of Sustainable Metallurgy, 1-10
4 2025 Durable bauxite-residue geopolymers: Enhancing scaling resistance with fly ash and waste glass powder Construction and Building Materials 491, 142661
5 2025 Development of Multifunctional Slag and Bauxite Residue-Based Geopolymers with Heavyweight Aggregate Enhancement Materials 18 (17), 4087
6 2025 Effect of Copper-Oxide-Nanoparticles'-Modified Paints to Properties of Cement-Based Mortar Exposed to Seawaters Nanosistemi, Nanomateriali, Nanotehnologii 23 (3), 895-903
7 2025 Characterization and drug release evaluation of chlorhexidine-encapsulated silica nanoparticles for potential root canal disinfection Makara Journal of Science 29 (2), 13
8 2025 Mitigating Strength Loss in Geopolymers in Low-Temperature Environments by Sodium Nitrite Addition Materials 18 (17), 3987
9 2024 Mechanical and Physical Properties of Cement Mortar with Recausticizing Solid Byproduct Semesta Teknika 27 (2), 138-147
10 2024 Valorization of residue from aluminum industries: a review Materials 17 (21), 5152
11 2024 Machine learning to predict workability and compressive strength of low-and high-calcium fly ash–based geopolymers Crystals 14 (10), 830
12 2024 Geopolymer for medical application: a review Physics and Chemistry of Solid State 25 (3), 626-638
13 2024 Characterization of MgO and Al2O3 based Refractory waste as partial replacement for Fly ash based Geopolymer Physics and Chemistry of Solid State 25 (2), 289-296
14 2023 Chitosan-Modified Alumina–Zirconia–Carbonate Apatite Nanoparticles-Filled Dental Restorative Composite Materials: Characterization and Mechanical Properties Nanosistemi, Nanomateriali, Nanotehnologii 21 (4), 817
15 2023 Flexural Strength of Pineapple Leaf Fiber Reinforced Metakaolin Zirconia Carbonate Apatite Geopolymer Composite Jurnal Teknologi 15 (2), 237-246
16 2023 Impact of Reduced Activator Concentration and Curing Method on Compressive Strength of Metakaolin/Fly Ash-based Geopolymer Mortar Jurnal Riset Teknologi Pencegahan Pencemaran Industri 14 (1), 19-28
17 2023 Mechanical And Microstructural Assessment Of Synthetic Aluminosilicate Based Geopolymer Dental Material Fullerene Journal of Chemistry 7 (2), 52-60
18 2023 Effect of Quenching Medium and Tempering Temperature on Microstructure and Hardness of JIS SUP 9 Steel: Pengaruh Media Pendingin dan Temperatur Tempering pada Mikrostruktur dan … Journal of Renewable Energy and Mechanics 6 (01)
19 2023 Properties and characterization of magnesium oxychloride cement as carbon capture material ASEAN Eng. J 13, 113-117
20 2022 Properties of Calcined Oebelo Red Soil Modified Fly Ash based Geopolymer Jurnal Rekayasa Sipil (JRS-Unand) 18 (3), 222-229
21 2022 Utilization of Grits and Dreg Wastes for Ceramics Raw Material Semesta Teknika 25 (2)
22 2022 The Effect of Tapioca on Morphological and Mechanical Properties of Metakaolin–Zirconia Geopolymer for Dental Restorative Nanocomposite Nanosistemi, Nanomateriali, Nanotehnologii 20 (4), 895
23 2022 The application of microbes to the fly ash-based alkali-activated material performance containing slag Green Materials and Electronic Packaging Interconnect Technology Symposium …
24 2022 Properties and morphological of Mortar containing used engine oil International Journal of Innovation in Mechanical Engineering and Advanced …
25 2022 Morphological and Properties of Portland-Composite Cements with Class C Fly Ash International Journal of Innovation in Mechanical Engineering and Advanced …
26 2022 Seawater as Alkali Activator in Fly Ash Based Geopolymer Engineering, MAthematics and Computer Science (EMACS) Journal 4 (2), 45-49
27 2021 Hydroxyapatite synthesize from Pugilina cochlidium and Babylonia spirata, L shells as bone graft materials candidates in periodontics Journal of Applied Science (Japps) 3 (1), 059-063
28 2020 Studi Penambahan Reduced Graphene Oxide Terhadap Konduktivitas Listrik Dan Kuat Lentur Geopolimer Berbasis Metakaolin Jurnal Keramik dan Gelas Indonesia Vol 29 (1), 28-44
29 2020 Synthesis of porous metakaolin geopolymer as bone substitute materials Key Engineering Materials 829, 182-187