Physico-chemical and mechanical properties of geopolymer/zircon composites
| Autor: | Kljajević Ljiljana, Nenadović Miloš, Petković Marijana, Bučevac Dušan, Pavlović Vladimir, Mladenović-Nikolić Nataša, Nenadović Snežana |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Science of Sintering, Vol 54, Iss 1, Pp 11-24 (2022) |
| Druh dokumentu: | article |
| ISSN: | 0350-820X 1820-7413 |
| DOI: | 10.2298/SOS2201011K |
| Popis: | The effect of zircon (ZrSiO4) on the physico-chemical and mechanical properties of geopolymer/zircon composites was examined in this study. Four geopolymer/zircon composites containing 10, 20, 30 and 40 wt.% zircon were prepared from metakaolin with alkali activators. Characterization of the obtained geopolymers was performed by X-ray diffraction (XRD), Scanning electron microscope (SEM-EDS), Fourier transform infrared spectroscopy (FTIR) and Matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF). XRD results did not confirmed the formation of interconnected phases between added zircon, starting aluminum silicates and alkali activators. Compressive strength of prepared geopolymer was examined. The maximum obtained compressive strength of 70.15 MPa was measured in sample containing the smallest fraction of zircon, i.e., 10 wt.%. Addition of larger amount of zircon (20 wt.%) hinders the progress of geopolymerization reaction and consequently decreases compressive strength. |
| Databáze: | Directory of Open Access Journals |
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