20–23 Sept 2023
Metropol Lake Resort, Ohrid
Europe/Skopje timezone

Preparation and performance of low content carbon geopolymer

Not scheduled
20m
Metropol Lake Resort, Ohrid

Metropol Lake Resort, Ohrid

Poster presentation

Speaker

Dr Jelena Gulicovski (VINČA" Institute of Nuclear Sciences -National Institute of thе Republic of Serbia, University of Belgrade, Belgrade, Serbia)

Description

Due to the low CO2 emission of geopolymers compared to Portland cement, interest in their use as binding cement has increased in recent years. The main goal of this research is to relate the green and sustainable characteristics to the good mechanical and chemical properties of fly ash-based geopolymers. For those purposes, samples of different ratios of fly ash (FA) and metakaolin (MK) were prepared. Mineralogical characterization of the geopolymer samples conducted using X-ray powder diffraction (XRD) showed that in the geopolymer synthesis reaction new amorphous phase was formed. Diffuse reflectance infrared Fourier transform spectroscopy (DRIFT) confirmed characteristic bands of 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, while X-ray photoelectron spectroscopy (XPS) analysis revealed the total reduction of carbon content in the alkali activated geopolymer with optimal stoichiometry 50:50. The results of this research indicates the possibility to obtain a geopolymer material with almost complete absence of carbon, which implies further application as a material with very high environmental potential and zero carbon emission.

Primary author

Dr Jelena Gulicovski (VINČA" Institute of Nuclear Sciences -National Institute of thе Republic of Serbia, University of Belgrade, Belgrade, Serbia)

Co-authors

Dr Miloš Nenadović (VINČA" Institute of Nuclear Sciences -National Institute of thе Republic of Serbia, University of Belgrade, Belgrade, Serbia) Dr Miljana Mirković (VINČA" Institute of Nuclear Sciences -National Institute of thе Republic of Serbia, University of Belgrade, Belgrade, Serbia) Dr Ljiljana Kljajević (VINČA" Institute of Nuclear Sciences -National Institute of thе Republic of Serbia, University of Belgrade, Belgrade, Serbia) Dr Ivana Bošković (Faculty of Metallurgy and Technology, University of Montenegro, Cetinjski put bb, 81000 Podgorica, Montenegro) Dr Mira Vukčević (Faculty of Metallurgy and Technology, University of Montenegro, Cetinjski put bb, 81000 Podgorica, Montenegro) Dr Snežana Nenadović (VINČA" Institute of Nuclear Sciences -National Institute of thе Republic of Serbia, University of Belgrade, Belgrade, Serbia)

Presentation materials