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Materials 2016, 9(6), 461; doi:10.3390/ma9060461

Innovative Fly Ash Geopolymer-Epoxy Composites: Preparation, Microstructure and Mechanical Properties

1
INSTM Research Group Napoli Parthenope, Centro Direzionale Napoli, Dipartimento di Ingegneria, Università di Napoli ‘Parthenope’, Isola C4, Napoli 80143, Italy
2
Dipartimento di Scienze Chimiche, Università degli Studi di Napoli “Federico II”, Complesso Universitario di Monte S. Angelo, via Cintia, Napoli 80126, Italy
3
Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, p.le Tecchio 80, Napoli 80126, Italy
*
Author to whom correspondence should be addressed.
Academic Editors: Arie van Riessen and Prabir K. Sarker
Received: 14 March 2016 / Revised: 5 May 2016 / Accepted: 2 June 2016 / Published: 9 June 2016
(This article belongs to the Special Issue Advances in Geopolymers and Alkali-Activated Materials)
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Abstract

The preparation and characterization of composite materials based on geopolymers obtained from fly ash and epoxy resins are reported for the first time. These materials have been prepared through a synthetic method based on the concurrent reticulation of the organic and inorganic components that allows the formation of hydrogen bonding between the phases, ensuring a very high compatibility between them. These new composites show significantly improved mechanical properties if compared to neat geopolymers with the same composition and comparable performances in respect to analogous geopolymer-based composites obtained starting from more expensive raw material such as metakaolin. The positive combination of an easy synthetic approach with the use of industrial by-products has allowed producing novel low cost aluminosilicate binders that, thanks to their thixotropicity and good adhesion against materials commonly used in building constructions, could be used within the field of sustainable building. View Full-Text
Keywords: geopolymer; fly ash; composites; epoxy resin; SEM; mechanical properties geopolymer; fly ash; composites; epoxy resin; SEM; mechanical properties
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Roviello, G.; Ricciotti, L.; Tarallo, O.; Ferone, C.; Colangelo, F.; Roviello, V.; Cioffi, R. Innovative Fly Ash Geopolymer-Epoxy Composites: Preparation, Microstructure and Mechanical Properties. Materials 2016, 9, 461.

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