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Article

Polymeric Coatings for AR-Glass Fibers in Cement-Based Matrices: Effect of Nanoclay on the Fiber-Matrix Interaction

1
Department of Materials, Environmental Sciences and Urban Planning, Università Politecnica delle Marche, 60131 Ancona, Italy
2
Leibniz-Institut für Polymerforschung Dresden, Hohe Strasse 6, 01069 Dresden, Germany
*
Author to whom correspondence should be addressed.
Academic Editor: Ioannis Kartsonakis
Appl. Sci. 2021, 11(12), 5484; https://doi.org/10.3390/app11125484
Received: 27 May 2021 / Revised: 8 June 2021 / Accepted: 9 June 2021 / Published: 13 June 2021
(This article belongs to the Special Issue Surface Modification of Glass Fibers)
Polymeric coatings are widely used to enhance the load bearing capacity and chemical durability of alkali-resistant glass (AR-glass) textile in cement-based composites. The contact zone between coated yarns and concrete matrix plays a major role to enable the stress transfer and has still to be improved for the full exploitation of the mechanical behavior of the composite. As a new approach, this paper studies how the addition of nanoclay particles in the polymer coating formulation can increase the chemical bond between organic coating and inorganic matrix. This includes the description of the water-based coating preparation by dispersing sodium montmorillonites, whereby the resulting coating nanostructure is characterized by X-ray diffraction and energy dispersive X-ray spectroscopy. Single glass fibers were treated by dip-coating. Atomic force microscopy was used to determine the surface roughness, and the effect on the fiber tensile properties was studied. Moreover, the morphological and chemical characteristics of the coatings were compared with the results obtained from single fiber pull-out (SFPO) tests. It was shown that the incorporation of nanoclays leads to increased interfacial shear strength arising from the ability of nanoclay particles to nucleate hydration products in the fiber-matrix contact zone. View Full-Text
Keywords: alkali-resistant glass fiber; polymer coating; nanoclay; interface; cement-based matrix; glass fiber reinforced concrete composites alkali-resistant glass fiber; polymer coating; nanoclay; interface; cement-based matrix; glass fiber reinforced concrete composites
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MDPI and ACS Style

Bompadre, F.; Scheffler, C.; Utech, T.; Donnini, J. Polymeric Coatings for AR-Glass Fibers in Cement-Based Matrices: Effect of Nanoclay on the Fiber-Matrix Interaction. Appl. Sci. 2021, 11, 5484. https://doi.org/10.3390/app11125484

AMA Style

Bompadre F, Scheffler C, Utech T, Donnini J. Polymeric Coatings for AR-Glass Fibers in Cement-Based Matrices: Effect of Nanoclay on the Fiber-Matrix Interaction. Applied Sciences. 2021; 11(12):5484. https://doi.org/10.3390/app11125484

Chicago/Turabian Style

Bompadre, Francesca, Christina Scheffler, Toni Utech, and Jacopo Donnini. 2021. "Polymeric Coatings for AR-Glass Fibers in Cement-Based Matrices: Effect of Nanoclay on the Fiber-Matrix Interaction" Applied Sciences 11, no. 12: 5484. https://doi.org/10.3390/app11125484

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