A semi-destructive assessment method to estimate the residual strength of maritime pine structural elements degraded by anobiids

Detalhes bibliográficos
Autor(a) principal: Parracha, João L.
Data de Publicação: 2019
Outros Autores: Pereira, Manuel F. C., Maurício, António, Machado, José Saporiti, Faria, Paulina, Nunes, Lina
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: https://doi.org/10.1617/s11527-019-1354-9
Resumo: In this article, an assessment method to estimate the residual strength of pine structural elements degraded by anobiids is presented. This novel method was developed in the laboratory to be used in situ and is based on the strength required to withdraw a screw on the surface of degraded timber. Samples of degraded maritime pine (Pinus pinaster Ait.) were submitted to micro-computed tomography (μ-XCT) to quantify density loss. This parameter is highly correlated with mechanical properties thus central for the assessment of timber structural capacity. Density loss values have been correlated with both screw withdrawal force and shear parallel to the grain strength showing significant relationships between these parameters. Using these correlations, the density loss of a degraded element and its shear strength parallel to the grain via the screw withdrawal force can be estimated enabling a valid quantitative assessment of the timber elements residual strength and, therefore, contributing to reduce unnecessary replacement, to boost eco-efficient interventions and to provide foundations required to perform experimental modelling tests.
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spelling A semi-destructive assessment method to estimate the residual strength of maritime pine structural elements degraded by anobiidsAnobiid infestationDamage assessmentMicro-computed tomographyScrew withdrawalTimberCivil and Structural EngineeringBuilding and ConstructionMaterials Science(all)Mechanics of MaterialsIn this article, an assessment method to estimate the residual strength of pine structural elements degraded by anobiids is presented. This novel method was developed in the laboratory to be used in situ and is based on the strength required to withdraw a screw on the surface of degraded timber. Samples of degraded maritime pine (Pinus pinaster Ait.) were submitted to micro-computed tomography (μ-XCT) to quantify density loss. This parameter is highly correlated with mechanical properties thus central for the assessment of timber structural capacity. Density loss values have been correlated with both screw withdrawal force and shear parallel to the grain strength showing significant relationships between these parameters. Using these correlations, the density loss of a degraded element and its shear strength parallel to the grain via the screw withdrawal force can be estimated enabling a valid quantitative assessment of the timber elements residual strength and, therefore, contributing to reduce unnecessary replacement, to boost eco-efficient interventions and to provide foundations required to perform experimental modelling tests.DEC - Departamento de Engenharia CivilRUNParracha, João L.Pereira, Manuel F. C.Maurício, AntónioMachado, José SaporitiFaria, PaulinaNunes, Lina2022-03-25T01:31:01Z2019-06-012019-06-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://doi.org/10.1617/s11527-019-1354-9eng1359-5997PURE: 13757969http://www.scopus.com/inward/record.url?scp=85064700005&partnerID=8YFLogxKhttps://doi.org/10.1617/s11527-019-1354-9info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-05-22T17:41:08Zoai:run.unl.pt:10362/81690Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-05-22T17:41:08Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv A semi-destructive assessment method to estimate the residual strength of maritime pine structural elements degraded by anobiids
title A semi-destructive assessment method to estimate the residual strength of maritime pine structural elements degraded by anobiids
spellingShingle A semi-destructive assessment method to estimate the residual strength of maritime pine structural elements degraded by anobiids
Parracha, João L.
Anobiid infestation
Damage assessment
Micro-computed tomography
Screw withdrawal
Timber
Civil and Structural Engineering
Building and Construction
Materials Science(all)
Mechanics of Materials
title_short A semi-destructive assessment method to estimate the residual strength of maritime pine structural elements degraded by anobiids
title_full A semi-destructive assessment method to estimate the residual strength of maritime pine structural elements degraded by anobiids
title_fullStr A semi-destructive assessment method to estimate the residual strength of maritime pine structural elements degraded by anobiids
title_full_unstemmed A semi-destructive assessment method to estimate the residual strength of maritime pine structural elements degraded by anobiids
title_sort A semi-destructive assessment method to estimate the residual strength of maritime pine structural elements degraded by anobiids
author Parracha, João L.
author_facet Parracha, João L.
Pereira, Manuel F. C.
Maurício, António
Machado, José Saporiti
Faria, Paulina
Nunes, Lina
author_role author
author2 Pereira, Manuel F. C.
Maurício, António
Machado, José Saporiti
Faria, Paulina
Nunes, Lina
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv DEC - Departamento de Engenharia Civil
RUN
dc.contributor.author.fl_str_mv Parracha, João L.
Pereira, Manuel F. C.
Maurício, António
Machado, José Saporiti
Faria, Paulina
Nunes, Lina
dc.subject.por.fl_str_mv Anobiid infestation
Damage assessment
Micro-computed tomography
Screw withdrawal
Timber
Civil and Structural Engineering
Building and Construction
Materials Science(all)
Mechanics of Materials
topic Anobiid infestation
Damage assessment
Micro-computed tomography
Screw withdrawal
Timber
Civil and Structural Engineering
Building and Construction
Materials Science(all)
Mechanics of Materials
description In this article, an assessment method to estimate the residual strength of pine structural elements degraded by anobiids is presented. This novel method was developed in the laboratory to be used in situ and is based on the strength required to withdraw a screw on the surface of degraded timber. Samples of degraded maritime pine (Pinus pinaster Ait.) were submitted to micro-computed tomography (μ-XCT) to quantify density loss. This parameter is highly correlated with mechanical properties thus central for the assessment of timber structural capacity. Density loss values have been correlated with both screw withdrawal force and shear parallel to the grain strength showing significant relationships between these parameters. Using these correlations, the density loss of a degraded element and its shear strength parallel to the grain via the screw withdrawal force can be estimated enabling a valid quantitative assessment of the timber elements residual strength and, therefore, contributing to reduce unnecessary replacement, to boost eco-efficient interventions and to provide foundations required to perform experimental modelling tests.
publishDate 2019
dc.date.none.fl_str_mv 2019-06-01
2019-06-01T00:00:00Z
2022-03-25T01:31:01Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://doi.org/10.1617/s11527-019-1354-9
url https://doi.org/10.1617/s11527-019-1354-9
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 1359-5997
PURE: 13757969
http://www.scopus.com/inward/record.url?scp=85064700005&partnerID=8YFLogxK
https://doi.org/10.1617/s11527-019-1354-9
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv mluisa.alvim@gmail.com
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