Influence of Fe2O3, MgO and Molarity of NaOH Solution on the Mechanical Properties of Fly Ash-Based Geopolymers

Autor:	Brăduț Alexandru Ionescu, Mihail Chira, Horațiu Vermeșan, Andreea Hegyi, Adrian-Victor Lăzărescu, Gyorgy Thalmaier, Bogdan Viorel Neamțu, Timea Gabor, Ioana Monica Sur
Jazyk:	angličtina
Rok vydání:	2022
Předmět:	geopolymer compressive strength Fe2O3 MgO Technology Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Zdroj:	Materials, Vol 15, Iss 19, p 6965 (2022)
Druh dokumentu:	article
ISSN:	1996-1944
DOI:	10.3390/ma15196965
Popis:	The use of waste from industrial activities is of particular importance for environmental protection. Fly ash has a high potential in the production of construction materials. In the present study, the use of fly ash in the production of geopolymer paste and the effect of Fe2O3, MgO and molarity of NaOH solution on the mechanical strength of geopolymer paste are presented. Samples resulting from the heat treatment of the geopolymer paste were subjected to mechanical tests and SEM, EDS and XRD analyses. Samples were obtained using 6 molar and 8 molar NaOH solution with and without the addition of Fe2O3 and MgO. Samples obtained using a 6 molar NaOH solution where Fe2O3 and MgO were added had higher mechanical strengths compared to the other samples.
Databáze:	Directory of Open Access Journals
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