Study of strengthening solutions for glued-laminated wood beams of maritime pine wood

Ribeiro, Alfredo S.; Jesus, Abílio M.P. De; Lima, Antônio Marcos Gonçalves de; Lousada, J.

doi:10.1016/j.conbuildmat.2009.02.042

Cited by 51 publications

(30 citation statements)

References 9 publications

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“…The density uniformity within a panel has been considered as one of the most key attributes in determining the mechanical properties and quality control (Winistorfer et al 2000;Ribeiro et al 2009;Vengala et al 2011). Particularly for the biomass resource, reasonable density distribution and homogenous control are essential to make products with high performance and low cost Qiu et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Uniformity of Density and Mechanical Properties of Bamboo-Bundle Laminated Veneer Lumber (BLVL)

Chen¹,

Jiang²,

Deng³

et al. 2013

BioResources

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The objective of this study was to evaluate the uniformity of density distribution for Bamboo-bundle Laminated Veneer Lumber (BLVL) and its relationship to the stability of mechanical performance. A novel assembly style called one-piece veneer formation technology was developed to enhance the density uniformity, and four different density levels for BLVL were examined by X-ray scanning. The results indicated that the homogeneity of density, the stability of mechanical performance, and the mechanical properties for BLVL could be effectively improved by assembling the bamboo bundles into layers and then combining the layers to make the lumber. The density uniformity in width and thickness directions increased with increasing target density. A negatively linear correlation between density and Coefficient of Variation (COV) of MOR and shearing strength was observed. Partial correlation analysis revealed that when controlling for the variability of density, the linear relationship between density and the COV of MOR became insignificant, and the degree of linear correlation between density and the COV of shearing strength decreased.

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Section: Introductionmentioning

confidence: 99%

Evaluation of the Uniformity of Density and Mechanical Properties of Bamboo-Bundle Laminated Veneer Lumber (BLVL)

Chen¹,

Jiang²,

Deng³

et al. 2013

BioResources

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show abstract

“…However, it can be further described as an orthotropic material with unique and independent mechanical properties in the longitudinal, radial, and tangential directions (Ribeiro et al 2009). Due to its unidirectional structure, LVL also has orthotropic characteristics.…”

Section: Modeling Of Bending Moe Of Cfrp Reinforced Lvlmentioning

confidence: 99%

“…According to the theory of laminated beams in pure flexure, the overall stiffness, , is equal to the sum of the components' stiffness (Shen and Hu 2006;Ribeiro et al 2009), or:…”

Section: Reinforcement Of Cfrpmentioning

confidence: 99%

“…The advantages of these materials are more uniform physical and mechanical properties compared with solid wood because of their reconstitution and densification (Burdurlu et al 2007;Ribeiro et al 2009;Kılıç 2011).…”

Section: Introductionmentioning

confidence: 99%

“…In addition, laminated wood reinforced with horizontal and vertical pultruded materials exhibits a higher MOR than solid wood or controls. Compared to laminated wood with vertically pultruded materials, the horizontal solution is satisfactory, as it uses only one layer of composite to yield the same MOR of laminated wood with two layers of vertical composites (Ribeiro et al 2009). As a result, reinforcing with FRPs has emerged as a new solution that permits the use of low-grade wood for highperformance glulam or LVL manufacturing.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical Properties of Poplar Laminated Veneer Lumber Modified by Carbon Fiber Reinforced Polymer

Wei¹,

Wang²,

Zhou³

et al. 2013

BioResources

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a Poplar (Populus euramericana cv.) is one of the most important fastgrowing tree species in China, but so far its utilization has been limited to nonstructural wood-based panels. The objective of this work was to develop a good understanding of how to improve the mechanical properties of poplar laminated veneer lumber (LVL) with carbon fiber reinforced polymer (CFRP). A theoretical model was successfully developed to predict the bending modulus of elasticity (MOE) of LVL reinforced by CFRP. To validate the model, two different configurations of LVL were made in the laboratory: LVL reinforced with a single layer of CFRP on one side (LVL-SR) and LVL reinforced with a single layer of CFRP on each side (LVL-DR). It was found that the model prediction of the LVL MOE agreed well with the experimental results. LVL reinforced with CFRP had a greater MOE and modulus of rupture (MOR) than the control LVL. The MOE of the LVL-SR and LVL-DR increased by 40% and 67%, respectively.

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Bottom‐Up Film‐to‐Bulk Assembly Toward Bioinspired Bulk Structural Nanocomposites

Chen,

Zhang,

Gao

et al. 2024

Advanced Materials

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Biological materials, although composed of meager minerals and biopolymers, often exhibit amazing mechanical properties far beyond their components due to hierarchically ordered structures. Understanding their structure‐properties relationships and replicating them into artificial materials would boost the development of bulk structural nanocomposites. Layered microstructure widely exists in biological materials, serving as the fundamental structure in nanosheet‐based nacres and nanofiber‐based Bouligand tissues, and implying superior mechanical properties. High‐efficient and scalable fabrication of bioinspired bulk structural nanocomposites with precise layered microstructure is therefore important yet remains difficult. Here, we focus on one straightforward bottom‐up film‐to‐bulk assembly strategy for fabricating bioinspired layered bulk structural nanocomposites. The bottom‐up assembly strategy inherently offers a methodology for precise construction of bioinspired layered microstructure in bulk form, availability for fabrication of bioinspired bulk structural nanocomposites with large sizes and complex shapes, possibility for design of multiscale interfaces, feasibility for manipulation of diverse heterogeneities. Not limited to discussing what has been achieved by using the current bottom‐up film‐to‐bulk assembly strategy, we also envision how to promote such an assembly strategy to better benefit the development of bioinspired bulk structural nanocomposites. Compared to other assembly strategies, the highlighted strategy provides great opportunities for creating bioinspired bulk structural nanocomposites on demand.This article is protected by copyright. All rights reserved

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Study of strengthening solutions for glued-laminated wood beams of maritime pine wood

Cited by 51 publications

References 9 publications

Evaluation of the Uniformity of Density and Mechanical Properties of Bamboo-Bundle Laminated Veneer Lumber (BLVL)

Evaluation of the Uniformity of Density and Mechanical Properties of Bamboo-Bundle Laminated Veneer Lumber (BLVL)

Mechanical Properties of Poplar Laminated Veneer Lumber Modified by Carbon Fiber Reinforced Polymer

Bottom‐Up Film‐to‐Bulk Assembly Toward Bioinspired Bulk Structural Nanocomposites

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