20.500.12556/RUL-153108 Formation and evolution of the hydrotalcite-like phase during ageing of dolomite-cement mortars under various conditions This work considers the reactions of dolomite powder mixed with Portland cement during ageing under accelerating conditions (60 °C, water or alkaline medium). The phase composition and microstructure of cement-dolomite mortars were studied using X-ray diffraction (XRD), thermogravimetric analysis (TGA), and scanning electron microscopy with X-ray microanalysis (SEM-EDS). The results showed that the alkalinity of the medium increased the dolomite reaction degree but did not affect the reaction products’ composition. The formation of the hydrotalcite-like phase with the gen-eral formula $Mg_4Al_2(CO_3)_{1−x}(OH)_{12+2x}·nH_2O$ proved to be the predominant route of dolomite consumption in the pres-ence of available aluminium in the hardened cement paste. Then, after three months of ageing, an interlayer anions re-placement became noticeable: carbonate anions in the structure of hydrotalcite are gradually replaced by hydroxide ones. dolomite-cement mortars accelerating ageing conditions dedolomitisation hydrotalcite-like phase interlayer anions replacement dolomitno cementne malte pogoji pospešenega staranje dedolomitizacija hidrotalcitne faze anionska medplastna izmenjava true false true Angleški jezik Slovenski jezik Članek v reviji 2023-12-18 10:36:46 2023-12-18 10:36:48 2023-12-19 03:44:20 0000-00-00 00:00:00 2023 0 0 Str. 371-379 no. 3 Vol. 70 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2023-01-01 666.971.4 1580-3155 10.17344/acsi.2022.7907 177681923 RAZ_Sutormina_Elena_2023.pdf RAZ_Sutormina_Elena_2023.pdf 1 3BD9B3211DE6DF167CF1535694F9282D d4a3b86deb6679baa09ab064e828df2809f782d851f588e261de3e87987c1a9a d2fa0a38-9d89-11ee-a59a-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=178990 https://acsi-journal.eu/index.php/ACSi/article/view/7907/9996 1 f7a5f2a1-9d88-11ee-a59a-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=178988 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0