Numerical and Experimental Evaluation of the Use of a Glass Fiber Laminated Composite Materials as Reinforcement in Timber Beams

Benedito, Ferreira Mário; Freitas, Correa Gustavo; Hallak, Panzera Túlio; Fiorelli, Juliano; Velloso, Silva Vânia Regina; Rocco, Lahr Francisco Antonio; Luis, Christoforo André

doi:10.5923/j.cmaterials.20140402.06

Cited by 2 publications

(2 citation statements)

References 13 publications

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“…Two pieces of carbon fiber (6 × 5 cm) were glued on each face and in the central region of the fissured specimens. It was used 70% by mass of the bicomponent resin in relation to the mass of the fabrics in fixed carbon fibers, as performed by Ferreira et al (2014).…”

Section: Methodsmentioning

confidence: 99%

“…To increase the adhesion of the composite, the surface preparation was performed after the generation of the cracks in the test specimens (Ferreira et al 2014). Demarcated gluing regions, the sequence was itself used sandpaper to wood on both sides in order to increase the surface area and to remove oil residues and any types of impurities which could affect the adhesion of the bicomponent epoxy adhesive with wood.…”

Section: Methodsmentioning

confidence: 99%

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Carbon fiber-reinforced polymers as a tensile reinforcement of the Pinus elliotti and Manilkara huberi wood species

Bravo

Branco

Chahud

et al. 2020

Maderas, Cienc. tecnol.

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In wood structures, the elements subjected to bending stresses, such as the beams, present a fracture initiated in the tensile region, and under these conditions, the use of laminated composite materials is presented as an alternative solution in the form of repair or reinforcement. This research aimed to evaluate the influence of the use of carbon fibers laminated composites in tensile reinforcement in the direction parallel to grain of Pinus elliotti and Manilkara huberi wood species. The Viapol two-component epoxy adhesive was used in the lamination and fixation of the unidirectional carbon fiber in the wood species. Ten specimens with no defects (reference) and 10 specimens were prepared for each crack length (25 and 50mm) with and without the reinforcement (60mm × 50mm) by the laminated composite. The tensile tests were performed in accordance with the requirements of the Brazilian standard ABNT NBR 7190 (1997). From the results of the statistical analysis, the use of the carbon fiber composite was able to restore the tensile strength of the cracked samples (partial or total) in relation to samples without defects, demonstrating the potential of the laminates in carbon fibers as an alternative solution in repair for both wood species.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Carbon fiber-reinforced polymers as a tensile reinforcement of the Pinus elliotti and Manilkara huberi wood species

Bravo

Branco

Chahud

et al. 2020

Maderas, Cienc. tecnol.

View full text Add to dashboard Cite

show abstract

Timber Beam Repair Based on Polymer-Cementitious Blends

et al. 2017

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This study aims to manufacture and apply polymer-cementitious blends based on a combination of epoxy polymer and Ordinary Portland Cement (OPC) for timber beam repair. The material was used to repair timber beams of "Maçaranduba" (Manilkara sp.) and "Cedro doce" (Cedrella spp) wood species. A full factorial design was conducted to investigate the effect of cement particle content (0wt%, 30wt%, 40wt% and 50wt %), type of cement (ASTM-II and ASTM-III), and pigment addition (0wt% and 0.2wt%) on the physical and mechanical properties of the blend. The cement content factor affected all properties investigated. The highest elastic modulus was achieved by the blends produced with 50wt% of cement and 0.2wt% of pigment inclusion. This condition was used to repair the timber beams evaluated under four-point bending test. The insertion of the blends in timber beams achieved superior load levels to the unreinforced woods in both species, inferior load levels to the reference condition (without defects) in "Cedro doce", and superior to the reference condition in "Maçaranduba". These results were justified by the low density of "Cedro doce", providing a better blend-wood interface adhesion.

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Numerical and Experimental Evaluation of the Use of a Glass Fiber Laminated Composite Materials as Reinforcement in Timber Beams

Cited by 2 publications

References 13 publications

Carbon fiber-reinforced polymers as a tensile reinforcement of the Pinus elliotti and Manilkara huberi wood species

Carbon fiber-reinforced polymers as a tensile reinforcement of the Pinus elliotti and Manilkara huberi wood species

Timber Beam Repair Based on Polymer-Cementitious Blends

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