Development of a penetration test for timber impregnation products for use in old buildings

Detalhes bibliográficos
Autor(a) principal: Henriques, M. D.
Data de Publicação: 2010
Outros Autores: Nunes, L., Brito, J.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://repositorio.lnec.pt:8080/jspui/handle/123456789/18202
Resumo: As concerns for the quality and durability of buildings are grow¬ing. solutions are needed to increase the likelihood of being able to preserve the physical and mechanical integrity of constructions. and this is more demanding when the building has historical value (1). Conspicuous among the anomalies currently most observed in buildings' timber structures are those caused by xylotrophic organ¬isms such as rot fungi and subterranean termites. as well as dry¬wood termites and woodworms, The first two occur in timber with high moisture content and the second two in dry timber Keeping timber in a good state of preservation and remediate an infection 01' infestation both normally require the use of chemical compounds [2], Treating the wood or using treated wood not only helps homeowners save money but also conserves forests (3.4], Details of these treatment products should nevertheless be duly noted after application Until the early 1990s the use of CCA (chromated copper arse¬nate) compounds and active substances such as pentachlorophe¬nol. copper, tin or lindane applied in organic solvents (LOSP) was generalized [2-41. Although some of these formulations were very efficient at extending the life of wood. the health hazard to workers and the risk of environmental impact on the soil and landscape has to be seriously considered [3.4]. In the last few decades severe restrictions were therefore imposed on the use of many of the sub¬stances mentioned above in Europe [51. and in the USA where for instance, CCA was phased out of all new residential uses. from Jan¬uary 2004 [61, Some traditional products based on established practices are also in general use, They include linseed oil, a good water repellent finishing, and used motor oil. which is often applied (particularly in Portugal) in the preventive treatment of wood. though with very arguable effectiveness. Present day maintenance or rehabilitation interventions in old buildings will necessarily lead to the use of newer and more envi¬ronmentally benign products on existing timber (Fig. 1). However, the effectiveness of curative/preventive measures is often impaired by the presence of previous treatments or finishes, not always well documented and difficult to characterize. In this context. there is a need for a penetration test that would allow swift evaluation whether a particular new wood preserva¬tive eao be used, The test should also be of minimum disturbance to the structure under rehabilitation,
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spelling Development of a penetration test for timber impregnation products for use in old buildingsWoodTreatmentsOld buildingsPenetration testAs concerns for the quality and durability of buildings are grow¬ing. solutions are needed to increase the likelihood of being able to preserve the physical and mechanical integrity of constructions. and this is more demanding when the building has historical value (1). Conspicuous among the anomalies currently most observed in buildings' timber structures are those caused by xylotrophic organ¬isms such as rot fungi and subterranean termites. as well as dry¬wood termites and woodworms, The first two occur in timber with high moisture content and the second two in dry timber Keeping timber in a good state of preservation and remediate an infection 01' infestation both normally require the use of chemical compounds [2], Treating the wood or using treated wood not only helps homeowners save money but also conserves forests (3.4], Details of these treatment products should nevertheless be duly noted after application Until the early 1990s the use of CCA (chromated copper arse¬nate) compounds and active substances such as pentachlorophe¬nol. copper, tin or lindane applied in organic solvents (LOSP) was generalized [2-41. Although some of these formulations were very efficient at extending the life of wood. the health hazard to workers and the risk of environmental impact on the soil and landscape has to be seriously considered [3.4]. In the last few decades severe restrictions were therefore imposed on the use of many of the sub¬stances mentioned above in Europe [51. and in the USA where for instance, CCA was phased out of all new residential uses. from Jan¬uary 2004 [61, Some traditional products based on established practices are also in general use, They include linseed oil, a good water repellent finishing, and used motor oil. which is often applied (particularly in Portugal) in the preventive treatment of wood. though with very arguable effectiveness. Present day maintenance or rehabilitation interventions in old buildings will necessarily lead to the use of newer and more envi¬ronmentally benign products on existing timber (Fig. 1). However, the effectiveness of curative/preventive measures is often impaired by the presence of previous treatments or finishes, not always well documented and difficult to characterize. In this context. there is a need for a penetration test that would allow swift evaluation whether a particular new wood preserva¬tive eao be used, The test should also be of minimum disturbance to the structure under rehabilitation,2010-04-09T14:12:21Z2010-04-22T16:58:46Z2014-10-09T14:54:59Z2017-04-12T14:56:37Z2010-07-01T00:00:00Z2010-07info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://repositorio.lnec.pt:8080/jspui/handle/123456789/18202eng0950-0618Henriques, M. D.Nunes, L.Brito, J.info: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:RCAAP2024-01-13T03:02:27Zoai:localhost:123456789/18202Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:38:34.039771Repositório 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 Development of a penetration test for timber impregnation products for use in old buildings
title Development of a penetration test for timber impregnation products for use in old buildings
spellingShingle Development of a penetration test for timber impregnation products for use in old buildings
Henriques, M. D.
Wood
Treatments
Old buildings
Penetration test
title_short Development of a penetration test for timber impregnation products for use in old buildings
title_full Development of a penetration test for timber impregnation products for use in old buildings
title_fullStr Development of a penetration test for timber impregnation products for use in old buildings
title_full_unstemmed Development of a penetration test for timber impregnation products for use in old buildings
title_sort Development of a penetration test for timber impregnation products for use in old buildings
author Henriques, M. D.
author_facet Henriques, M. D.
Nunes, L.
Brito, J.
author_role author
author2 Nunes, L.
Brito, J.
author2_role author
author
dc.contributor.author.fl_str_mv Henriques, M. D.
Nunes, L.
Brito, J.
dc.subject.por.fl_str_mv Wood
Treatments
Old buildings
Penetration test
topic Wood
Treatments
Old buildings
Penetration test
description As concerns for the quality and durability of buildings are grow¬ing. solutions are needed to increase the likelihood of being able to preserve the physical and mechanical integrity of constructions. and this is more demanding when the building has historical value (1). Conspicuous among the anomalies currently most observed in buildings' timber structures are those caused by xylotrophic organ¬isms such as rot fungi and subterranean termites. as well as dry¬wood termites and woodworms, The first two occur in timber with high moisture content and the second two in dry timber Keeping timber in a good state of preservation and remediate an infection 01' infestation both normally require the use of chemical compounds [2], Treating the wood or using treated wood not only helps homeowners save money but also conserves forests (3.4], Details of these treatment products should nevertheless be duly noted after application Until the early 1990s the use of CCA (chromated copper arse¬nate) compounds and active substances such as pentachlorophe¬nol. copper, tin or lindane applied in organic solvents (LOSP) was generalized [2-41. Although some of these formulations were very efficient at extending the life of wood. the health hazard to workers and the risk of environmental impact on the soil and landscape has to be seriously considered [3.4]. In the last few decades severe restrictions were therefore imposed on the use of many of the sub¬stances mentioned above in Europe [51. and in the USA where for instance, CCA was phased out of all new residential uses. from Jan¬uary 2004 [61, Some traditional products based on established practices are also in general use, They include linseed oil, a good water repellent finishing, and used motor oil. which is often applied (particularly in Portugal) in the preventive treatment of wood. though with very arguable effectiveness. Present day maintenance or rehabilitation interventions in old buildings will necessarily lead to the use of newer and more envi¬ronmentally benign products on existing timber (Fig. 1). However, the effectiveness of curative/preventive measures is often impaired by the presence of previous treatments or finishes, not always well documented and difficult to characterize. In this context. there is a need for a penetration test that would allow swift evaluation whether a particular new wood preserva¬tive eao be used, The test should also be of minimum disturbance to the structure under rehabilitation,
publishDate 2010
dc.date.none.fl_str_mv 2010-04-09T14:12:21Z
2010-04-22T16:58:46Z
2010-07-01T00:00:00Z
2010-07
2014-10-09T14:54:59Z
2017-04-12T14:56:37Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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dc.identifier.uri.fl_str_mv http://repositorio.lnec.pt:8080/jspui/handle/123456789/18202
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dc.relation.none.fl_str_mv 0950-0618
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