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Thermally modified wood: assessing the impact of weathering on mechanical strength and exposure to subterranean termites

2025-01Journal article Open access
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datacite.subject.fosEngenharia e Tecnologia::Engenharia dos Materiais
datacite.subject.fosEngenharia e Tecnologia::Outras Engenharias e Tecnologias
datacite.subject.sdg09:Indústria, Inovação e Infraestruturas
datacite.subject.sdg12:Produção e Consumo Sustentáveis
dc.contributor.authorGodinho, Delfina
dc.contributor.authorLourenco, Ana
dc.contributor.authorAraújo, Solange
dc.contributor.authorMachado, José Saporiti
dc.contributor.authorNunes, Lina
dc.contributor.authorDuarte, Marta
dc.contributor.authorDuarte, Sónia
dc.contributor.authorFerreira, Cristina
dc.contributor.authorQuilhó, Teresa
dc.contributor.authorCunha Diamantino, Teresa
dc.contributor.authorGominho, Jorge
dc.date.accessioned2025-04-11T11:54:44Z
dc.date.available2025-04-11T11:54:44Z
dc.date.issued2025-01
dc.description.abstractABSTRACT: The main objective of this study was to evaluate the mechanical properties of three thermal-modified wood species when exposed to weathering in urban and maritime/industrial environments and their durability against subterranean termites. The wood species studied were Maritime pine, ash, and blackwood acacia. All wood samples were exposed to two different environments (urban and maritime/industrial) for 24 months. Then, its physical and mechanical properties were evaluated (modulus of elasticity (MOE), modulus of rupture (MOR), compression strength (CS), and modulus of compression (MOC). Thermally modified woods revealed a lower density, which could explain the loss of MOE and MOR. In compression, no significant changes were verified. The weathered samples showed changes in mechanical properties, mostly verified in MOE and MOR, where some decreases were reported in both locations. Tests were performed to evaluate biodegradation and the resistance of all wood samples to subterranean termites. The grade of attack (approximate to 4) and termite survival rate were similar in all wood species (above 75% and lower than 80%), except for modified acacia (59%), which could indicate that thermal modification increased toxic substances. The cellulose degradation was reflected in FTIR-ATR and Py-GC/MS in natural and thermally modified woods. Py-GC/MS showed a decrease in levoglucosan, while lignin suffered some modifications with slight changes in monomeric composition reflected by the reduction of the S/G ratio. No changes were found between the two environments, and thermal modification did not give extra protection against termites and weathering.eng
dc.identifier.citationGodinho, D., Lourenço, A., de Oliveira Araújo, S., Machado, J., Nunes, L., Duarte, M., Duarte, S., Ferreira, C., Quilhó, T., Diamantino, T.C. & Gominho, J. (2025) Thermally modified wood: assessing the impact of weathering on mechanical strength and exposure to subterranean termites. In: European Journal of Wood and Wood Products, 2025, vol. 83(1), article 40. https://doi.org/10.1007/s00107-024-02199-4
dc.identifier.doi10.1007/s00107-024-02199-4
dc.identifier.issn0018-3768
dc.identifier.urihttp://hdl.handle.net/10400.9/5644
dc.language.isoeng
dc.peerreviewedyes
dc.publisherSpringer
dc.relationLaboratory for Sustainable Land Use and Ecosystem Services
dc.relationUtilização de espécies de madeira portuguesas termo-modificadas e avaliação da sua durabilidade à exposição atmosférica
dc.relation.hasversionhttps://link.springer.com/article/10.1007/s00107-024-02199-4
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectMaterials
dc.subjectWood
dc.subjectDurability
dc.subjectDegradation
dc.subjectWeathering
dc.subjectThermal modification
dc.subjectMechanical properties
dc.titleThermally modified wood: assessing the impact of weathering on mechanical strength and exposure to subterranean termiteseng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleLaboratory for Sustainable Land Use and Ecosystem Services
oaire.awardTitleUtilização de espécies de madeira portuguesas termo-modificadas e avaliação da sua durabilidade à exposição atmosférica
oaire.awardURIhttp://hdl.handle.net/10400.9/5643
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/OE/PD%2FBD%2F142987%2F2018/PT
oaire.citation.issue1
oaire.citation.titleEuropean Journal of Wood and Wood Products
oaire.citation.volume83
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamOE
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameGodinho
person.familyNameLourenco
person.familyNameAraújo
person.familyNameFerreira
person.familyNameQuilhó
person.familyNameCunha Diamantino
person.givenNameDelfina
person.givenNameAna
person.givenNameSolange
person.givenNameCristina
person.givenNameTeresa
person.givenNameTeresa
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person.identifier.orcid0000-0002-5159-6735
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person.identifier.orcid0000-0002-6100-5353
person.identifier.orcid0000-0002-3710-241X
person.identifier.orcid0000-0001-8353-3459
person.identifier.orcid0000-0002-0481-0460
person.identifier.ridA-7670-2018
person.identifier.ridA-5901-2011
person.identifier.ridP-6986-2017
person.identifier.ridC-6541-2011
person.identifier.ridG-5063-2017
person.identifier.scopus-author-id57190375972
person.identifier.scopus-author-id36877743000
person.identifier.scopus-author-id36620885600
person.identifier.scopus-author-id6602336820
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
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