Wood-cement boards with addition of coconut husk

Wood-cement boards with addition of coconut husk

The present work evaluates the production of wood-cement particleboards (WCBs) with addition of coconut-husk fibers. Trees of a Eucalyptus urophylla × Eucalyptus grandis hybrid were used as wood source. Boards were produced with addition of five coconut-fiber levels (0%, 10%, 20%, 30%, 40% and 50%)...

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Bibliographic Details
Published in:Wood material science and engineering Vol. 17; no. 6; pp. 617 - 626
Main Authors: de Souza, Maila Janaína Coêlho, de Melo, Rafael Rodolfo, Guimarães, José Benedito, Carnaval, Tatiane Kelly Barbosa de Azevedo, Pimenta, Alexandre Santos, Mascarenhas, Adriano Reis Prazeres
Format: Journal Article
Language:English
Published: Abingdon Taylor & Francis 02-11-2022
Taylor & Francis Ltd
Subjects:
Absorption
agro-industrial residue
Bend strength
Boards
Bonding strength
Cement
Chemical bonds
Composites
Compression
Compressive strength
Dimensional stability
Eucalyptus
Fibers
Hardwoods
Mechanical properties
Mechanical tests
Physical properties
recycling
sustainable construction
Swelling
Thickness
Water absorption
Wood
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Summary:The present work evaluates the production of wood-cement particleboards (WCBs) with addition of coconut-husk fibers. Trees of a Eucalyptus urophylla × Eucalyptus grandis hybrid were used as wood source. Boards were produced with addition of five coconut-fiber levels (0%, 10%, 20%, 30%, 40% and 50%) to replace the original wood, in a completely randomized design. From each board, specimens were taken to perform physical-mechanical tests (density, water absorption, thickness swelling, static bending, compression strength, and internal bond strength). The chemical characterization of the coconut fiber - in particular the total amount of extractives - in cold and hot water and an organic solvent, along with determination of lignin, holocellulose and ash amounts. The results showed that the addition of coconut fibers significantly affected the physical-mechanical properties of the boards. For the physical properties, the addition of coconut fibers improved the dimensional stability with the respective decrease in water absorption and thickness swelling. For mechanical properties, a decrease in the MOR and MOE was observed as the percentage of coconut fibers increased, most likely due to a poor interaction between the particles and the cementitious matrix. The resulting WCBs were suitable for nonstructural and indoor uses.
ISSN:1748-0272
1748-0280
DOI:10.1080/17480272.2021.1914722