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Publikācija: Illite Clays of Latvia as Raw Material for Geopolymer Synthesis

Publication Type Article in a collection of scientific publications or a chapter in a monograph with ISBN or ISSN
Funding for basic activity Unknown
Defending: ,
Publication language English (en)
Title in original language Illite Clays of Latvia as Raw Material for Geopolymer Synthesis
Field of research 2. Engineering and technology
Sub-field of research 2.4 Chemical engineering
Authors Ingunda Šperberga
Gaida Maruta Sedmale
Māris Rundāns
Andris Cimmers
Keywords Mechanical properties, porosimetry, surface morphology
Abstract Illite-based geopolymer products through activating of three Quaternary clays of Latvia by different concentration of KOH solution was investigated. Potassium hydroxide concentration in the aqueous phase of the geopolymeric system acted on the dissolution process, as well as on the bonding of the solid particles in the final structure. Depending on the different SiO2/Al2O3 ratio in the used clays (2,7 for clay K1, 3,5 for clay K2 and 3,8 for clay K3) decreased mechanical strength of the obtained samples. The best mechanical strength (30 MPa) showed clay K1 with the smallest SiO2/Al2O3 ratio. Scanning electron microscopy and mercury porosimetry results confirmed the differences among activated clays developing the diverse mechanical strength of the obtained samples.
Reference Šperberga, I., Sedmale, G., Rundāns, M., Cimmers, A. Illite Clays of Latvia as Raw Material for Geopolymer Synthesis. In: Latvijas derīgie izrakteņi, jaunas tehnoloģijas, materiāli un produkti: zinātnisko rakstu krājums. Rīga: RTU Izdevniecība, 2014, pp.99-105. ISBN 978-9934-10-552-4.
ID 19613