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|Title: ||Suitability of sawdust from three tropical timbers for wood-cement composites|
|Authors: ||Antwi-Boasiako, Charles|
Boadu, Kwadwo B.
|Keywords: ||Cement hydration|
|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|
|Appears in Collections:||College of Agric and Natural Resources|
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