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Natural Fiber-Stabilized Geopolymer Foams—A Review

  • The development of sustainable, environmentally friendly insulation materials with a reduced carbon footprint is attracting increased interest. One alternative to conventional insulation materials are foamed geopolymers. Similar to foamed concrete, the mechanical properties of geopolymer foams can also be improved by using fibers for reinforcement. This paper presents an overview of the latest research findings in the field of fiber-reinforced geopolymer foam concrete with special focus on natural fibers reinforcement. Furthermore, some basic and background information of natural fibers and geopolymer foams are reported. In most of the research, foams are produced either through chemical foaming with hydrogen peroxide or aluminum powder, or through mechanical foaming which includes a foaming agent. However, previous reviews have not sufficiently addresses the fabrication of geopolymer foams by syntactic foams. Finally, recent efforts to reduce the fiber degradation in geopolymer concrete are discussed along with challenges for natural fiber reinforced-geopolymer foam concrete.

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Document Type:Article
Author:Katharina Walbrück, Felicitas Maeting, Steffen Witzleben, Dietmar Stephan
Parent Title (English):Materials
Article Number:3198
Place of publication:Basel
Publishing Institution:Hochschule Bonn-Rhein-Sieg
Date of first publication:2020/07/17
Copyright:© 2020 by the authors. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.
Funding:This research was funded by European Regional Development Fund (EFRE.NRW), grant number EFRE 0500035.
Keyword:geopolymer foam; natural fiber; thermal insulation material
Departments, institutes and facilities:Fachbereich Angewandte Naturwissenschaften
Projects:Biobasierte Produkte (EFRE/0500035)
Dewey Decimal Classification (DDC):6 Technik, Medizin, angewandte Wissenschaften / 66 Chemische Verfahrenstechnik / 660 Chemische Verfahrenstechnik
Entry in this database:2020/07/22
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International