Structural, Mechanical and Chemical Properties of Low Content Carbon Geopolymer

Snežana Nenadović, Jelena Gulicovski, Miljana Mirković, Ljiljana Kljajević, Ivana Bošković, Mira Vukčević and Miloš Nenadović
Additional contact information
Snežana Nenadović: Department of Materials Science, “VINČA” Institute of Nuclear Science, National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia
Jelena Gulicovski: Department of Materials Science, “VINČA” Institute of Nuclear Science, National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia
Miljana Mirković: Department of Materials Science, “VINČA” Institute of Nuclear Science, National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia
Ljiljana Kljajević: Department of Materials Science, “VINČA” Institute of Nuclear Science, National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia
Ivana Bošković: Faculty of Metallurgy and Technology, University of Montenegro, Cetinjski Put bb, 81000 Podgorica, Montenegro
Mira Vukčević: Faculty of Metallurgy and Technology, University of Montenegro, Cetinjski Put bb, 81000 Podgorica, Montenegro
Miloš Nenadović: Department of Atomic Physics, “VINČA” Institute of Nuclear Science, National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia

Sustainability, 2022, vol. 14, issue 9, 1-13

Abstract: In recent years geopolymers have shown increased interest as binders with low CO 2 emission compared to Portland cement. The main goal of this research is focused on connecting green and sustainable characteristics with the mechanical and chemical properties of fly ash-based geopolymer. The samples of different ratios of fly ash (FA) and metakaolin (MK) were prepared. X-ray powder diffraction (XRD) showed that in the geopolymer synthesis reaction a new amorphous phase was formed. Diffuse reflectance infrared Fourier transform spectroscopy (DRIFT) confirmed characteristic bands of the Si-O and O-Si-O groups at 1045 cm −1 . Compressive strength analysis revealed that the optimal ratio of FA and MK is 50:50 and exhibits the highest value. X-ray photoelectron spectroscopy (XPS) analysis revealed the total reduction of carbon content in the alkali-activated geopolymer with the optimal stoichiometry of 50:50. This indicates the possibility of obtaining a geopolymer material with an almost complete absence of carbon, which implies further application as a material with a very high environmental potential and of zero carbon emissions.

Keywords: carbon reduction; compressive strength; geopolymer; metakaolin; fly ash; XPS (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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