Please use this identifier to cite or link to this item: http://repositorio.lnec.pt:8080/jspui/handle/123456789/1013606
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dc.contributor.authorSousa, J.pt_BR
dc.contributor.authorGarrido, M.pt_BR
dc.contributor.authorCorreia, J. R.pt_BR
dc.contributor.authorCabral-Fonseca, S.pt_BR
dc.date.accessioned2021-03-24T19:14:24Zpt_BR
dc.date.accessioned2021-04-01T10:34:59Z-
dc.date.available2021-03-24T19:14:24Zpt_BR
dc.date.available2021-04-01T10:34:59Z-
dc.date.issued2020-11-06pt_BR
dc.identifier.citation10.1016/j.compositesa.2020.106193pt_BR
dc.identifier.urihttps://repositorio.lnec.pt/jspui/handle/123456789/1013606-
dc.description.abstractThe durability of pultruded GFRP composites is critical to their performance in civil engineering applications, for which comprehensive and validated data is limited. To address this issue, this study presents an extensive experimental programme on the effects of hygrothermal ageing on the performance of pultruded GFRP profiles made of two alternative resin systems – unsaturated polyester (UP) and vinyl ester (VE) – both comprising identical fibre architecture. The ageing environments included immersion in demineralised and salt water at three different temperatures (20°C, 40°C, and 60°C), and continuous condensation at 40°C, for durations up to two years. Physical, viscoelastic and mechanical (tensile, flexural, in-plane and interlaminar shear) properties were assessed after a desorption period. As expected, the VE profile had overall better performance than the UP profile. After 24 months, the highest reductions in tensile strength occurred for water immersion at 60°C, namely 45% and 33% for the UP and VE profiles, respectively. This paper provides a wealth of test data that can be used for degradation models for the prediction of their long-term mechanical property retention.pt_BR
dc.language.isoengpt_BR
dc.publisherElsevier Ltdpt_BR
dc.rightsrestrictedAccesspt_BR
dc.subjectPolymer-matrix composites (PMCs)pt_BR
dc.subjectEnvironmental degradationpt_BR
dc.subjectMechanical testingpt_BR
dc.subjectPultrusionpt_BR
dc.titleHygrothermal ageing of pultruded GFRP profiles: Comparative study of unsaturated polyester and vinyl ester resin matricespt_BR
dc.typeworkingPaperpt_BR
dc.description.pages106193pt_BR
dc.description.volume140pt_BR
dc.description.sectorDM/NMOpt_BR
dc.description.magazineComposites Part Apt_BR
dc.contributor.peer-reviewedSIMpt_BR
dc.contributor.academicresearchersSIMpt_BR
dc.contributor.arquivoNAOpt_BR
Appears in Collections:DM/NMO - Comunicações a congressos e artigos de revista

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