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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/13300

Title: Suitability of sawdust from three tropical timbers for wood-cement composites
Authors: Antwi-Boasiako, Charles
Ofosuhene, Linda
Boadu, Kwadwo B.
Keywords: Cement hydration
composite board
inhibitory chemical
total extractive
wood-cement compatibility
Issue Date: Jan-2018
Publisher: Journal of Sustainable Forestry
Citation: Journal of Sustainable Forestry
Abstract: Construction material rising cost and global demand for economicallysustainable and environmentally-friendly building resources have necessitated the use of sawdust-cement composite. Wood constituents and cement incompatibility hinder its production and need careful selection of the timber. Sawdust suitability from Triplochiton scleroxylon, Entandrophragma cylindricum and Klainedoxa gabonensis for wood-cement composite was determined by identifying their chemical constituents and their composites’ physico-mechanical properties. T. scleroxylon recorded the minimum total extractive (6.12%), lignin (29.89%) and holocellulose (56.38%) and K. gabonensis the maximum (9.31, 31.59 and 57.5% respectively). Ash content was higher for T. scleroxylon (7.6%) but lower for K. gabonensis (1.53%). T. scleroxylon boards were stronger [Modulus of Elasticity (MOE) = 696.1 N/m2] and more moisture-resistant [Moisture Absorption (MA) = 8.8%] than E. cylindricum (MOE = 625.9 N/m2; MA = 9.5%). K. gabonensis boards crushed after manufacturing due to its incompatibility with cement. T. scleroxylon sawdust is suitable for woodcement composites due to its more compatible chemical constituents (i.e., lower extractive, lignin, holocellulose contents and more ash) and its boards’ excellent physico-mechanical properties than those for the other timbers. Its sawdust-cement composites could be utilized for cladding and walling. The use of sawdust would increase green building resource base and reduce environmental pollution
Description: This article is published in Journal of Sustainable Forestry and also available at DOI: 10.1080/10549811.2018.1427112
URI: 10.1080/10549811.2018.1427112
Appears in Collections:College of Agric and Natural Resources

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