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Appl. Sci. 2018, 8(3), 365;

Influence of Size Reduction of Fly Ash Particles by Grinding on the Chemical Properties of Geopolymers

Facultad de Ingeniería Mochis, Universidad Autónoma de Sinaloa, Prol. Ángel Flores y Fuente de Poseidón, S.N., Los Mochis, Sinaloa CP 81223, Mexico
Escuela Politécnica Superior de Edificación de Barcelona, Universidad Politécnica de Cataluña, Av. Doctor Marañón 44-50, 08028 Barcelona, Spain
Author to whom correspondence should be addressed.
Received: 8 January 2018 / Revised: 20 February 2018 / Accepted: 27 February 2018 / Published: 4 March 2018
(This article belongs to the Section Chemistry)
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Chemical properties of geopolymers were evaluated from the reduction of fly ash particle size by grinding. X-ray diffraction determined that at early curing ages new crystalline phases appear in the matrix of the geopolymer and they remain for 28 days, with increases in intensities up to 60%. In Fourier transform infrared spectroscopy, displacements were identified in the main band of the geopolymers at higher wavenumbers, attributed to the greater rigidity in the structures of the aluminosilicate gel due to the increase of the reaction products in the geopolymers obtained through fly ashsubjected to previous grinding, which is observable in the geopolymers matrix. Results indicate that the reduction of fly ash particle size by grinding has an influence on the chemical properties of geopolymers. View Full-Text
Keywords: geopolymers; FT-IR; XRD; fly ash geopolymers; FT-IR; XRD; fly ash

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Rosas-Casarez, C.A.; Arredondo-Rea, S.P.; Cruz-Enríquez, A.; Corral-Higuera, R.; Pellegrini-Cervantes, M.J.; Gómez-Soberón, J.M.; Medina-Serna, T.J. Influence of Size Reduction of Fly Ash Particles by Grinding on the Chemical Properties of Geopolymers. Appl. Sci. 2018, 8, 365.

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