20.500.12556/DiRROS-16326 The Incorporation of steel slag into belite-sulfoaluminate cement clinkers The potential use of steel slag from treated steel slag in belite-sulfoaluminate cements was investigated in this study. Cement clinkers with two phase compositions were synthesized, allowing the incorporation of different amounts of steel slag. The phase composition and microstructure of cement clinkers at three different sintering temperatures were studied by X-ray powder diffraction and the Rietveld method, as well as scanning electron microscopy with energy dispersive spectrometry. The results showed that the targeted phase composition of clinkers was achieved at a sintering temperature of 1250%C. However, a higher amount of perovskite instead of ferrite was detected in the clinker with a higher content of Ti-bearing bauxite. Apart from the main phases, such asbelite, calcium sulfoaluminate, and ferrite, several minor phases were identified, including mayenite, perovskite, periclase, and alkali sulfates. In both clinker mixtures, a higher content of MgO in the steelslags resulted in the formation of periclase. Furthermore, the hydration kinetics and compressive strength at 7 and 28 days were studied in two cements prepared from clinkers sintered at 1250%C. As evidenced by the results of isothermal calorimetry, the hydration kinetics were also influenced by the minor clinker phases. Cement with a higher content of calcium sulfoaluminate phase developed a higher compressive strength. cements BCSA steel slag secundary row materials microstructure clinker phase cement BCSA jeklarska žlindra sekundarne surovine mikrostruktura klinker true false true MDPI Angleški jezik Slovenski jezik © 2021 by the authors. Licensee MDPI, Basel, Switzerland. Neznano 2023-03-01 14:26:26 2023-08-01 08:02:12 2023-08-02 03:36:45 0000-00-00 00:00:00 2021 0 0 Nasl. z nasl. zaslona; Opis vira z dne 2. 3. 2021; str. 1-14 iss. 4 Vol. 11 2021 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2021-02-19 624 2076-3417 53480195 https://www.mdpi.com/2076-3417/11/4/1840 Odprti dostop 1 4a4ac5e6-b82c-11ed-b359-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=21804 RAZ_Zibret_Lea_2021.pdf RAZ_Zibret_Lea_2021.pdf 1 3F76F4DC007217D1006CB14305EEB00D 3e4abcffb801e1c3927cf98a0f1dd3d338799b206635e0fd3ce9058dc07b67ca 91e4b4f7-b82d-11ed-b359-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=21805 Zavod za gradbeništvo Slovenije 0 0 0