Editor - Andrie Harmaji

Dr. Andrie Harmaji, S.T., M.T.
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. | Year | Publication Title | Journal / 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 |
| | Indonesian Journal of Dentistry (IJD) ISSN: 2775-0159
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