From residue to structurally and economically valuable lumber: Assessment of density, flexural properties, and joint efficiencies of finger-jointed logging residues of Khaya Ivorensis

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dc.contributor.authorAppiah -Kubi,Emmanuel
dc.contributor.authorInyong , Stephen
dc.contributor.authorAsiibe Osei
dc.contributor.authorBoampong, Ernest
dc.contributor.authorDadzie,Kessels Peter
dc.date.accessioned2023-11-23T12:02:50Z
dc.date.available2023-11-23T12:02:50Z
dc.date.issued2023-10-04
dc.description.abstractAbstract One way to reduce forest depletion rate and increase timber availability is to turn logging residues into structurally and economically valuable timber, and finger-jointing (FJ) appears the best technology to adapt. This study centred on Khaya ivorensis with five-fold objectives of assessing the: density; flexural properties; moisture content (MC) and FJ combination effect on density and flexural properties; joint efficiencies in MOE and MOR; and the predictive accuracy of density and MC for MOE and MOR following ISO 3131 − 1975 (for density), and BS 373–1957 (for flexural properties). Branch and stem off-cuts were extracted from two natural forest reserves and finger-jointed at two MCs (18 ± 3%mc and 9 ± 3%mc) using polyvinyl acetate adhesive (PVA). All FJ lumber at 18%mc, and branch & branch FJ lumber at both MCs were significantly (P < 0.05) denser than the rest. All FJ lumber at 18% MC were elastic than their unjointed stemwood. Though branch & branch FJ exhibited lowest elasticity and rupture at both MC levels, samples at 18% MC significantly (P < 0.05) exhibited lower rupture than those at 9%MC. MC and FJ lumber combination significantly (P = 0.000) influenced density and flexural properties. MC and density predicted flexural properties to about 79% accuracy. Relative to their unjointed stemwood, FJ lumber at 18%MC gained over 100% elasticity but had 40 to 70% MOR and 67 to 90% MOE at 9%MC. In conclusion, Finger-jointing branchwood with PVA is possible, but for optimum flexural properties, branch & stem combinations rather than branch & branch are recommended.
dc.identifier.citationDadzie, P. K., Appiah-Kubi, E., Inyong, S., Boampong, E., & Asibe, O. (2023). From residue to structurally and economically valuable lumber: Assessment of density, flexural properties, and joint efficiencies of finger-jointed logging residues of Khaya Ivorensis.
dc.identifier.urihttps://ir.aamusted.edu.gh/handle/123456789/848
dc.language.isoen
dc.publisherResearch Square
dc.titleFrom residue to structurally and economically valuable lumber: Assessment of density, flexural properties, and joint efficiencies of finger-jointed logging residues of Khaya Ivorensis
dc.typeArticle
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