Enhancement of bending properties of Douglas-fir and poplar laminate veneer lumber (LVL) beams with carbon and basalt fibers reinforcement
This paper presents the experimental results of the bending mechanical behavior (static and dynamic moduli, and maximum stress) of LVL (Laminated Veneer Lumber) beams reinforced with fiber polymer material (FRP). Different variables were studied: i) Wood species (Douglas fir or poplar); ii) Type of...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2020 |
| País: | España |
| Institución: | Consejo General de la Arquitectura Técnica de España (CGATE) |
| Repositorio: | RIARTE |
| OAI Identifier: | oai:www.riarte.es:20.500.12251/1900 |
| Acceso en línea: | http://hdl.handle.net/20.500.12251/1900 https://doi.org/10.1016/j.conbuildmat.2020.120185 |
| Access Level: | acceso abierto |
| Palabra clave: | Material de construcción Resistencia mecánica Resistencia a flexión Residuos - Construcción Fibra de refuerzo Material compuesto Estructuras - Construcción Fibra de carbono Estructura de madera 3305.39 Construcciones de Madera 3312.08 Propiedades de Los Materiales 2211.02 Materiales Compuestos 3305.33 Resistencia de Estructuras 3312.12 Ensayo de Materiales 3312.09 Resistencia de Materiales 2304.11 Fibras Naturales 3106.05 Productos |
| Sumario: | This paper presents the experimental results of the bending mechanical behavior (static and dynamic moduli, and maximum stress) of LVL (Laminated Veneer Lumber) beams reinforced with fiber polymer material (FRP). Different variables were studied: i) Wood species (Douglas fir or poplar); ii) Type of reinforcement (bidirectional carbon, unidirectional carbon or basalt); iii) Veneer quality and iv) Veneers orientation in the beam (flatwise or edgewise). The reinforcement percentages respect to the total cross-section was of 2.17%, 0.89%, and 1.74% for the unidirectional carbon, bidirectional carbon and basalt, respectively. A clear improvement provided by unidirectional carbon has been demonstrated (up to 40% more in the elastic modulus for the flatwise layout and more than 20% of the maximum stress, for both wood species). The influence of the quality of the veneers of the panel was also clearly demonstrated: the weakest wood material obtained the greatest improvements in their mechanical properties when reinforced, allowing to obtain stiff second quality poplar LVL, or strong second quality Douglas fir LVL. © 2020 Elsevier Ltd |
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