Bending Behaviour of Glulam Beams Reinforced With Carbon FRP Plates

Glišović, Ivan; Stevanović, Boško; Petrović, Miloš

doi:10.3846/13923730.2014.897969

Cited by 25 publications

(17 citation statements)

References 15 publications

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“…No visible local curvature or breakage was detected in the compression zone. A similar failure mechanism appeared in the studies of timber glulam beams by Glišović et al [25]. The final failure mode of CBSC beam 2-1 is shown in Fig.…”

Section: Failure Modessupporting

confidence: 79%

Flexural Performance of CFRP-Bamboo Scrimber Composite Beams

Wu¹,

Huang²,

Li³

2019

Journal of Renewable Materials

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This study presents a new structure made up of bamboo scrimber and carbon fiber reinforced polymer (CFRP) to address the low stiffness and strength of bamboo scrimbers. Three-point bending test and finite element model were conducted to study the failure mode, strain-displacement relationship, load-displacement relationship and relationships between strain distribution, contact pressure and deflection, and adhesive debonding. The results indicated that the flexural modulus and static flexural strength of the composite beams were effectively increased thanks to the CFRP sheets. The flexural modulus of the composite specimens were 2.33-2.94 times that of bamboo scrimber beams, and the flexural strength were 1.49-1.58 times that of bamboo scrimber beams. Adhesive debonding had a great influence on the strain distribution and deflection of the composite specimens. It was an important factor for the failure of the CFRP-bamboo scrimber composite specimens. According to the finite element simulation, the strain distribution, contact pressure and deflection also greatly changed with the adhesive debonding. After complete peeling, the deflection of the specimen was 3.09 times that of the unpeeled because it was no longer an integral beam.

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Section: Failure Modessupporting

confidence: 79%

Flexural Performance of CFRP-Bamboo Scrimber Composite Beams

Wu¹,

Huang²,

Li³

2019

Journal of Renewable Materials

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“…The low increases were attributed to the higher grammage of synthetic fibers that hindered the adhesive penetration, reducing its adhesion into the timber, consequently resulting in lower values of resistance. However, the decrease in shear strength on T3 and T5 are not observed in the literature when using the epoxy resin (RAFTERY; WHELAN, 2014;GLIŠOVIĆ et al, 2015a;GLIŠOVIĆ et al, 2015b;CHEW et al, 2015). As the ruptures starting in the laminated timbers, it can explain the loss of resistance.…”

Section: Discussionmentioning

confidence: 98%

“…Although Paricá GLULAM is significantly better than sawn timber (TEREZO; SZÜCS, 2010), the ultimate displacement in GLULAM element remains higher than in the other materials such as concrete (GLIŠOVIĆ et al, 2015a). The presence of timber defects, caused by natural variations, can impair the final Paricá timber used in this research was from planted forests of Amazon in northeast region of Pará State (PA).…”

Section: Introductionmentioning

confidence: 95%

Glued Laminated Timber of Paricá Reinforced With Synthetic Fibers

Rosa

Terezo

Mascia

et al. 2019

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Madeira laminada colada de paricá reforçada com fibras sintéticas. O objetivo foi avaliar o desempenho de madeiras laminada (MLC) de Schizolobium parahyba var. amazonicum (paricá) reforçadas com fibras de vidro ou carbono coladas com adesivo resorcinol através de ensaios de flexão estática, cisalhamento e tração paralela e perpendicular às fibras e linha de colagem e comparar os resultados experimentais com os analíticos. Os ensaios de flexão foram divididos em 5 Tratamentos (T) compostos por 6 corpos de prova, sendo T1 o controle sem reforço de fibras, T2 com fibra de vidro de 110 g•m-2 de gramatura, T3 com fibra de vidro de 200 g•m-2 , T4 fibra de vidro de 330 g•m-2 e T5 com reforço de fibra de carbono de 200 g•m-2. O Módulo de Elasticidade Longitudinal-EW dos ensaios de flexão foi estimado por cálculos analítico e experimental. Os resultados foram analisados pelo teste de Tukey com 5% de significância. Não houve um aumento significativo no valor do EW e na resistência à flexão, na resistência à tração paralela, perpendicular ou cisalhamento na linha de colagem para todos os tratamentos. O cálculo analítico resultou num deslocamento significativamente menor do que o experimental. O adesivo resorcinol teve desempenho satisfatório à flexão, sem rupturas por tração ou cisalhamento.

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“…Based on Eq. (1) and the plane section assumption, the elastic deformation caused by the actual initial prestressed force ὔ is calculated in equations (5) and (6).…”

Section: Measurement Of Prestress Lossmentioning

confidence: 99%

“…e wood, as a typical biological material, has been widely used in civil construction, car industry, furniture industry [1][2][3], which promotes extensive studies on wood structures [4]. ere are still many disadvantages of wood including a long growth, slow regeneration, a signi cant shortage, and a low utilization rate of the raw materials [5,6]. erefore, it is necessary to explore more feasible and appropriate materials similar to the wood, and the bamboo is attracting researchers' attention.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Nonprestressed/Prestressed BFRP Bar on Flexural Performance of the Bamboo Beam

Ding

Liu

2019

Advances in Polymer Technology

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Until now, the systematical and comprehensive strengthening techniques have not been formed for the bamboo structure. Under such background, this paper aims to explore the e ects of the application of the nonprestressed and prestressed basalt ber-reinforced polymer (BFRP) bars on the exural performance of the beams made of the laminated bamboo and reconstituted bamboo materials. Two series of four-point bending tests were thus conducted. In the rst series of tests, the pure laminated bamboo beam and the laminated bamboo beam applied with nonprestressed BFRP bar were compared. Test results showed that the ultimate load and deformation capacity of the laminated bamboo beam was improved due to the existence of the BFRP bar. In the second series of tests, the reconstituted bamboo beams applied with nonprestressed and prestressed BFRP bars were compared. It is found that the ultimate load of the reconstituted bamboo beam was not improved by the application of the prestressed force. e further analysis related to the prestress loss demonstrated that the prestress loss before the release of the prestressed BFRP bar could reach up to 31.8-37.3% compared with the design initial prestressed stress. e prestress loss caused by the elastic deformation of the bamboo beam can be neglected. For all tested specimens, the plane section assumption was acceptable and the position of the neutral axis of the beam gradually moved down with the increase of the applied load.

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Bending Behaviour of Glulam Beams Reinforced With Carbon FRP Plates

Cited by 25 publications

References 15 publications

Flexural Performance of CFRP-Bamboo Scrimber Composite Beams

Flexural Performance of CFRP-Bamboo Scrimber Composite Beams

Glued Laminated Timber of Paricá Reinforced With Synthetic Fibers

Effect of the Nonprestressed/Prestressed BFRP Bar on Flexural Performance of the Bamboo Beam

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