Composition of red mud and/or metakaolin-based modified geopolymers

There is potential use of red mud for synthesis of inorganic polymeric materials through a geopolymerization process as an alternative in the sectors of construction and building materials. By introducing of inorganic and organic modificators of microstructure (calcium hydroxide, bifunctional epoxy resins, or various types of alkoxylanes) during the geopolymer synthesis the enhanced values of ductility and strength can be obtained. Research was performed on alumosilicate material (red mud and metakaolin) and alkali activator raw mixture with defined quantity of modificator. The best sinthesys conditions were identified. Post-synthesis curing also play important role in obtaining of good-performing geopolymers. Characteristics of geopolymers were defined by measuring of compressive strength, N2-physisorption, as well as by SEM analysis, X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). In addition the lower value of zeta potential was identified as the assisting factor for the specific structure domains formation (within the certain range of pH) accompanied by the high compressive strength.

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Author:Mira Vukčević, Ivana Bošković, Snežana Nenadović, Miljana Mirković, Bojan Čalija, Vladimir B. Pavlović, Ljiljana Kljajević
Parent Title (English):Programme and The Book of Abstracts / Nineteenth Annual Conference YUCOMAT 2017, Herceg Novi, September 4-8, 2017
Publisher:Materials Research Society of Serbia
Place of publication:Belgrade
Editor:Dragan Uskoković, Velimir R. Radmilović
Document Type:Conference Proceeding
Date of Publication (online):28.11.2017
Year of first Publication:2017
Tag:geopolymers; metakaolin; microstructure; mud
First Page:72
Last Page:72
Institutes:Institute of Technical Sciences of the Serbian Academy of Sciences and Arts
University of Belgrade, Vinča Institute of Nuclear Sciences
University of Belgrade, Faculty of Pharmacy
University of Podgorica, Faculty of Metallurgy and Technology
open_access (DINI-Set):
Conference abstracts
Licence (English):License LogoCreative Commons - Attribution-Noncommercial-No Derivative Works 3.0 Serbia