The effects of nodes and resin on the mechanical properties of laminated bamboo timber produced from Gigantochloa scortechinii

Anokye, Rogerson; Bakar, Edi Suhaimi; Ratnasingam, Jegatheswaran; Yong, Adrian Choo Cheng; Bakar, Nova Noliza

doi:10.1016/j.conbuildmat.2015.12.083

Cited by 24 publications

(11 citation statements)

References 10 publications

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“…Therefore, these results demonstrate our reconfigured UF resin can reduce the amount of glue spread to 60 g m −2 , while the products prepared by the initial UF resin are unable to meet the standard. In addition, by comparing the results with the previously reported literature, the amount of adhesive used in this study is much lower than the previous amounts (including 200 g m −2 , 220 g m −2 , and 250 g m −2 ) [ 48 , 49 , 50 ], together with maintaining excellent gluability performance. These aspects prove that our method provides a way to reduce production costs.…”

Section: Resultsmentioning

confidence: 59%

Surfactant-Induced Reconfiguration of Urea-Formaldehyde Resins Enables Improved Surface Properties and Gluability of Bamboo

Liang

Zheng

et al. 2021

Polymers

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The high-efficiency development and utilization of bamboo resources can greatly alleviate the current shortage of wood and promote the neutralization of CO2. However, the wide application of bamboo-derived products is largely limited by their unideal surface properties with adhesive as well as poor gluability. Herein, a facile strategy using the surfactant-induced reconfiguration of urea-formaldehyde (UF) resins was proposed to enhance the interface with bamboo and significantly improve its gluability. Specifically, through the coupling of a variety of surfactants, the viscosity and surface tension of the UF resins were properly regulated. Therefore, the resultant surfactant reconfigured UF resin showed much-improved wettability and spreading performance to the surface of both bamboo green and bamboo yellow. Specifically, the contact angle (CA) values of the bamboo green and bamboo yellow decreased from 79.6° to 30.5° and from 57.5° to 28.2°, respectively, with the corresponding resin spreading area increasing from 0.2 mm2 to 7.6 mm2 and from 0.1 mm2 to 5.6 mm2. Moreover, our reconfigured UF resin can reduce the amount of glue spread applied to bond the laminated commercial bamboo veneer products to 60 g m−2, while the products prepared by the initial UF resin are unable to meet the requirements of the test standard, suggesting that this facile method is an effective way to decrease the application of petroleum-based resins and production costs. More broadly, this surfactant reconfigured strategy can also be performed to regulate the wettability between UF resin and other materials (such as polypropylene board and tinplate), expanding the application fields of UF resin.

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Section: Resultsmentioning

confidence: 59%

Surfactant-Induced Reconfiguration of Urea-Formaldehyde Resins Enables Improved Surface Properties and Gluability of Bamboo

Liang

Zheng

et al. 2021

Polymers

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“…Bamboo can be used as reinforcement material of composite in various forms, such as bamboo powder [27], bamboo strips [28][29][30], bamboo fibres [31,32], bamboo fabrics [33] and bamboo woven mat [34]. Figure 2 shows an example of a laminate composite consisted of epoxy resin as the matrix and bamboo woven mat as the filler.…”

Section: Figure 1 Worldwide Bamboo Production (26)mentioning

confidence: 99%

Treatment of bamboo fibres in improving mechanical performance of polymer composites – A review

Widiastuti

Solikhun

Cahyo

et al. 2018

AIP Conference Proceedings

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The use of bamboo fiber in reinforced concrete beam to reduce crack AIP Conference Proceedings 1887, 020003 (2017) Abstract. The hydrophilic character is a major concern in the development of natural fibre reinforced-polymer composites. As hydrophilic material which easily absorbs water, the water content inside bamboo fibres should be carefully controlled to produce bamboo composite possessing acceptable mechanical properties. The bamboo fibres provide a reservoir of water which diffuses into the interfacial region of epoxy matrix. Different hydrophilicity between bamboo fibres and the polymer matrix affects the fibre matrix adhesion which in turn influences the physical and mechanical performances of the composites. This article provides a short review on the current progress of bamboo-based polymer composite development. Further this present review discusses several treatments for bamboo fibres in order to improve the fibre-matrix adhesion and the effects on the moisture sensitivity mechanical performance of resulted composites. Those treatments aim not only to change the hydrophilic character of bamboo fibre but also to bring about the hydrophobic properties to the fibres. It is expected that the potential of bamboo material could be fully exploited as an alternative natural fibre reinforced material for polymer-based composites in wider application.

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“…Timber has been used as a construction material for thousands of years [1][2][3][4][5], however, bamboo [6][7][8][9][10][11][12][13] as a green and natural material that can be harvested in 4-5 years combined with its excellent mechanical properties, has more potential for popularization. Laminated bamboo lumber (LBL) [14][15][16][17][18] is a type of engineered bamboo [19][20][21][22][23] that can be made into structural elements of different sizes according to construction needs while making up the organic limitations of natural bamboo and maintaining the excellent mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Slenderness Ratio Effect on the Eccentric Compression Performance of Chamfered Laminated Bamboo Lumber Columns

Zhou¹,

Li²,

Dauletbek³

et al. 2022

Journal of Renewable Materials

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Eccentric compression tests on 15 chamfered laminated bamboo lumber (LBL) columns with a height ranging from 600 to 3000 mm were conducted in order to study the eccentric mechanical performance. The failure of all specimens was caused by the crack of bamboo fiber in the tensile region. When the ultimate strength was reached, except specimens with a height of 600 mm, all other specimens could bear large deformation, showing good ductility. The lateral displacements of the specimens under eccentric compression were approximately parabolic in the direction of column height. The ultimate bending moment of LBL columns with different slenderness ratios under compression with the same initial eccentricity was a fixed value. The relationship between ultimate capacity, axial displacement, lateral displacement, and slenderness ratio was analyzed based on test results. It was found that the plane section assumption could be used to express the stress and strain distribution of chamfered LBL columns under eccentric compression. A method for calculating the ultimate bearing capacity was proposed using a constitutive model based on the Ramberg-Osgood relation and the empirical formula for calculating the ultimate capacity was given on the basis of the former research as well as the test results in this paper.

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The effects of nodes and resin on the mechanical properties of laminated bamboo timber produced from Gigantochloa scortechinii

Cited by 24 publications

References 10 publications

Surfactant-Induced Reconfiguration of Urea-Formaldehyde Resins Enables Improved Surface Properties and Gluability of Bamboo

Surfactant-Induced Reconfiguration of Urea-Formaldehyde Resins Enables Improved Surface Properties and Gluability of Bamboo

Treatment of bamboo fibres in improving mechanical performance of polymer composites – A review

Slenderness Ratio Effect on the Eccentric Compression Performance of Chamfered Laminated Bamboo Lumber Columns

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