Enhancement of fabric–mortar interfacial adhesion by particle decoration: insights from pull-off measurements
Auteur(s): |
Matan Birenboim
Amr Alatawna Raghu Sripada Lior Nahum Lucas Luciano Cullari Alva Peled Oren Regev |
---|---|
Médium: | article de revue |
Langue(s): | anglais |
Publié dans: | Materials and Structures, 20 novembre 2021, n. 6, v. 54 |
DOI: | 10.1617/s11527-021-01789-5 |
Abstrait: |
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: | Cette oeuvre a été publiée sous la license Creative Commons Attribution 4.0 (CC-BY 4.0). Il est autorisé de partager et adapter l'oeuvre tant que l'auteur est crédité et la license est indiquée (avec le lien ci-dessus). Vous devez aussi indiquer si des changements on été fait vis-à-vis de l'original. |
1.97 MB
- Informations
sur cette fiche - Reference-ID
10637040 - Publié(e) le:
30.11.2021 - Modifié(e) le:
02.12.2021