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Review

A Review on Natural Fiber-Reinforced Geopolymer and Cement-Based Composites

1
Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany
2
Institute of Technology, School of Mechanical and Industrial Engineering, Addis Ababa University, Addis Ababa 7754, Ethiopia
3
Institute of Polymer Materials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany
*
Author to whom correspondence should be addressed.
The two authors contributed equally to this paper and share first co-authorship.
Materials 2020, 13(20), 4603; https://doi.org/10.3390/ma13204603
Received: 13 August 2020 / Revised: 28 September 2020 / Accepted: 6 October 2020 / Published: 16 October 2020
(This article belongs to the Special Issue Sustainability in Construction and Building Materials)
The use of ecological materials for building and industrial applications contributes to minimizing the environmental impact of new technologies. In this context, the cement and geopolymer sectors are considering natural fibers as sustainable reinforcement for developing composites. Natural fibers are renewable, biodegradable, and non-toxic, and they exhibit attractive mechanical properties in comparison with their synthetic fiber counterparts. However, their hydrophilic character makes them vulnerable to high volumes of moisture absorption, thus conferring poor wetting with the matrix and weakening the fiber–matrix interface. Therefore, modification and functionalization strategies for natural fibers to tailor interface properties and to improve the durability and mechanical behavior of cement and geopolymer-based composites become highly important. This paper presents a review of the physical, chemical and biological pre-treatments that have been performed on natural fibers, their results and effects on the fiber–matrix interface of cement and geopolymer composites. In addition, the degradation mechanisms of natural fibers used in such composites are discussed. This review finalizes with concluding remarks and recommendations to be addressed through further in-depth studies in the field. View Full-Text
Keywords: geopolymers; fibers; composites; interphases; surface treatments geopolymers; fibers; composites; interphases; surface treatments
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MDPI and ACS Style

Camargo, M.M.; Adefrs Taye, E.; Roether, J.A.; Tilahun Redda, D.; Boccaccini, A.R. A Review on Natural Fiber-Reinforced Geopolymer and Cement-Based Composites. Materials 2020, 13, 4603. https://doi.org/10.3390/ma13204603

AMA Style

Camargo MM, Adefrs Taye E, Roether JA, Tilahun Redda D, Boccaccini AR. A Review on Natural Fiber-Reinforced Geopolymer and Cement-Based Composites. Materials. 2020; 13(20):4603. https://doi.org/10.3390/ma13204603

Chicago/Turabian Style

Camargo, Marfa M., Eyerusalem Adefrs Taye, Judith A. Roether, Daniel Tilahun Redda, and Aldo R. Boccaccini 2020. "A Review on Natural Fiber-Reinforced Geopolymer and Cement-Based Composites" Materials 13, no. 20: 4603. https://doi.org/10.3390/ma13204603

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