Bending and Bonding Properties of Mixed-Species Glued Laminated Timber From Merpauh, Jelutong and Sesendok

Mohamad, Wan Munirah Wan; Bhkari, Norshariza Mohamad; Ahmad, Zakiah

doi:10.11113/jt.v81.12557

Cited by 5 publications

(3 citation statements)

References 10 publications

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“…A ductile failure was observed specifically in dabema glulams. These modes are similar to those described by Mohamad et al (2012), Ndong Bidzo et al ( 2021) and Mohamad et al (2019). The GGLT showed a satisfying behaviour in bending.…”

Section: Experimental Responses Of the Green-glued Laminated Beams Un...supporting

confidence: 90%

Mechanical Qualification of Green Glued Laminated Timbers From the Congo Basin Towards Preservation of Forest Species Diversity

Sout¹,

Oum-Lissouck²,

Ngono-Mvondo³

et al. 2022

JTFS

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This study investigates the bending performances of full-size and green glued laminated timber (glulam) beams, manufactured under a tropical climate. Two types of beams were prepared: mono-species and mixedspecies glulam. The mono-species glulam with uniform layup were manufactured using abura (Mitragyna ciliata) and dabema (Piptadeniastrum africanum). The mixed-species glulam with balanced layup were manufactured by associating difou (Morus mesozygia) and abura, and tali (Erythrophleum ivorense) and dabema. These species were selected in the framework of a sustainable development of the glulam industry in Congo Basin, and clustering of their technological properties. A one component polyurethane adhesive was used, and the beams were dried artificially using vacuum. Pure bending tests were performed and the results showed an optimal bondlines thickness that ranged from 0.1 to 0.3 mm. Failure occurred in the solid woods indicating a satisfatory bonding quality of the glulam products. The strength properties of the glulam and solid woods presented compatible trends. Findings of this study showed that it is possible to develop high mechanical performance glulam products while improving the valorisation of lesser-known species, thus preserving the forest diversity in the Congo Basin.

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Section: Experimental Responses Of the Green-glued Laminated Beams Un...supporting

confidence: 90%

Mechanical Qualification of Green Glued Laminated Timbers From the Congo Basin Towards Preservation of Forest Species Diversity

Sout¹,

Oum-Lissouck²,

Ngono-Mvondo³

et al. 2022

JTFS

View full text Add to dashboard Cite

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“…Authors also remarked the high importance of an accurately grading of the planks during the design process. In [ 15 , 16 , 17 ], the authors also combined different species of wood with the same final conclusion of low-grade, high-grade timber distribution for inner and outer parts of the glulam timber, respectively. Furthermore, this conclusion has been recently extended to CLT (Cross Laminated Timber) panels [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, this conclusion has been recently extended to CLT (Cross Laminated Timber) panels [ 18 ]. In [ 16 ], when a high-grade wood such as Merpauh was used for the outer planks, improvements of the modulus of elasticity between 117% and 157% were achieved.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Analysis of Mixed I-214 Poplar/Pinus Sylvestris Laminated Timber Subjected to Bending Loadings

et al. 2020

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The structural use of timber coming from fast growing and low-grade species such as poplar is one of the current challenges in the wood value chains, through the development of engineering products. In this work, a qualitative comparison of the behavior of mixed glued laminated timber made of pine in their outer layers and of poplar in their inner layers is shown and discussed. Single-species poplar and pine laminated timber have been used as control layouts. The investigation includes destructive four-point bending tests and three non-destructive methodologies: finite elements numerical model; semi-analytical model based on the Parallel Axes theorem and acoustic resonance testing. An excellent agreement between experimental and numerical results is obtained. Although few number of samples have been tested, the results indicate that the use of poplar as a low-grade species in the inner layers of the laminated timber can be a promising technology to decrease the weight of the timber maintaining the good mechanical properties of pine. Likewise, the need for the use of the shear modulus in both experimental measurements and numerical analysis is suggested, as well as the need to reformulate the vibration methodology for non-destructive grading in the case of mixed timber.

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Effect of ACQ treatment on surface quality and bonding performance of four Malaysian hardwoods and cross laminated timber (CLT)

et al. 2020

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Bending and Bonding Properties of Mixed-Species Glued Laminated Timber From Merpauh, Jelutong and Sesendok

Cited by 5 publications

References 10 publications

Mechanical Qualification of Green Glued Laminated Timbers From the Congo Basin Towards Preservation of Forest Species Diversity

Mechanical Qualification of Green Glued Laminated Timbers From the Congo Basin Towards Preservation of Forest Species Diversity

Experimental and Numerical Analysis of Mixed I-214 Poplar/Pinus Sylvestris Laminated Timber Subjected to Bending Loadings

Effect of ACQ treatment on surface quality and bonding performance of four Malaysian hardwoods and cross laminated timber (CLT)

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