Enhancement of fabric–mortar interfacial adhesion by particle decoration: insights from pull-off measurements
Author(s): |
Matan Birenboim
Amr Alatawna Raghu Sripada Lior Nahum Lucas Luciano Cullari Alva Peled Oren Regev |
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Medium: | journal article |
Language(s): | English |
Published in: | Materials and Structures, 20 November 2021, n. 6, v. 54 |
DOI: | 10.1617/s11527-021-01789-5 |
Abstract: |
Polymer-impregnated carbon fabric is used as an alternative to metallic reinforcement bars in cementitious materials, which is then termed textile-reinforced concrete (TRC). In this study, the bond strength between the cement-based matrix and the fabric was enhanced by decorating the polymer (an epoxy) coating the carbon fabric with hydrophilic micron-size particles (cement or silica) or nanocarbons (functionalized carbon nanotubes or graphene oxide). Cement powder decoration led to a 25% increase in the bond strength (measured by a pull-off test) and a 30% improvement in the mechanical properties of the composite. At the micron scale, the decoration resulted in the formation of a 100-μm thick interlayer between the decorated fabric and the cement-based matrix. Unexpectedly, exposure of the cement-decorated samples to a NaCl environment (as in off-shore constructions) resulted in enhanced bond strength due to the growth of salt crystals at the fabric–matrix interface. |
Copyright: | © The Author(s) 2021 |
License: | This creative work has been published under the Creative Commons Attribution 4.0 International (CC-BY 4.0) license which allows copying, and redistribution as well as adaptation of the original work provided appropriate credit is given to the original author and the conditions of the license are met. |
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data sheet - Reference-ID
10637040 - Published on:
30/11/2021 - Last updated on:
02/12/2021