COMPARATIVE SEM-EDS CHARACTERIZATION OF CLINKER, CALCINED KAOLIN CLAY AND IRON-RICH TECHNOGENIC MATERIAL FOR LOW-CARBON COMPOSITE CEMENT
Authors
Abilova Amina Janabaevna, Najimova Sarbinaz Karamatdinovna, Niyazimbetova Saltanat Alliyarovna, Abilov Jenis Janabaevich, Utemuratov Salamat Murat uli
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Reducing Portland clinker content is one approach to lowering the environmental impact of cement production. This study used scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy (SEM-EDS) to examine Portland clinker (KR), kaolin clay calcined at 800 °C (MK-800), and iron-rich technogenic material from titanomagnetite beneficiation (TMT). The analysis covered particle morphology, local elemental composition, and spatial distribution of selected elements. KR contained 41.0 wt.% Ca, whereas MK-800 contained 27.8 wt.% Si and 10.9 wt.% Al. TMT contained 13.3 wt.% Fe, together with 15.8 wt.% Si, 6.5 wt.% Mg, 5.5 wt.% Al, and 1.4 wt.% Ti. Elemental maps showed Fe-enriched regions within TMT. The components were considered for a composite cement formulation containing 80 wt.% clinker, 12 wt.% calcined kaolin clay, 5 wt.% TMT, and 3 wt.% gypsum. The results characterize the local elemental features of the individual starting materials; SEM–EDS alone cannot assign specific mineral phases or hydration products.
Keywords
Authors
Abilova Amina Janabaevna, Najimova Sarbinaz Karamatdinovna, Niyazimbetova Saltanat Alliyarovna, Abilov Jenis Janabaevich, Utemuratov Salamat Murat uli
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