Shear performance of the interface of sandwich specimens with fabric-reinforced cementitious matrix vegetal fabric skins
The utilization of the vegetal fabric-reinforced cementitious matrix (FRCM) represents an innovative approach to composite materials, offering distinct sustainable advantages when compared to traditional steel-reinforced concrete and conventional FRCM composites employing synthetic fibers. This arti...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2024 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/400286 |
| Acceso en línea: | https://hdl.handle.net/2117/400286 https://dx.doi.org/10.3390/app14020883 |
| Access Level: | acceso abierto |
| Palabra clave: | Plant fibers Plant cells and tissues Fiber-reinforced plastics Sandwich panels FRCM Cementitious matrix Vegetal fibers Shear test Fibres vegetals Plantes -- Cèl·lules i teixits Plàstics reforçats amb fibra Àrees temàtiques de la UPC::Enginyeria dels materials::Materials compostos Àrees temàtiques de la UPC::Enginyeria tèxtil::Fibres tèxtils |
| Sumario: | The utilization of the vegetal fabric-reinforced cementitious matrix (FRCM) represents an innovative approach to composite materials, offering distinct sustainable advantages when compared to traditional steel-reinforced concrete and conventional FRCM composites employing synthetic fibers. This article introduces a design for sandwich solutions based on a core of extruded polystyrene and composite skins combining mortar as a matrix and diverse vegetal fabrics as fabrics such as hemp and sisal. The structural behavior of the resulting sandwich panel is predominantly driven by the interaction between materials (mortar and polyurethane) and the influence of shear connectors penetrating the insulation layer. This study encompasses an experimental campaign involving double-shear tests, accompanied by heuristic bond-slip models for the potential design of sandwich solutions. The analysis extends to the examination of various connector types, including hemp, sisal, and steel, and their impact on the shear performance of the sandwich specimens. The results obtained emphasize the competitiveness of vegetal fabrics in achieving an effective composite strength comparable to other synthetic fabrics like glass fiber. Nevertheless, this study reveals that the stiffness of steel connectors outperforms vegetal connectors, contributing to an enhanced improvement in both stiffness and shear strength of the sandwich solutions. |
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