Utilize este identificador para referenciar este registo: http://hdl.handle.net/1822/42059

TítuloInfluence of temperature on the curing of an epoxy adhesive and its influence on bond behaviour of NSM-CFRP systems
Autor(es)Benedetti, Andrea
Fernandes, Pedro Miguel Gomes
Granja, José Luís Duarte
Sena-Cruz, José
Azenha, Miguel
Palavras-chaveCarbon fibre
Theromosetting resin
Cure behaviour
Non-destructive testing
Near-surface mounted reinforcement
A. Carbon fibre
A. Theromosetting resin
B. Cure behaviour
D. Non-destructive testing
Data2016
EditoraElsevier
RevistaComposites Part B: Engineering
Resumo(s)In NSM-CFRP installations, the mechanical behaviour of the strengthening system is strongly influenced by the epoxy adhesive, particularly at early ages. In the present work, the influence of temperature on the curing process of the epoxy was investigated. Three distinct temperatures were studied: 20, 30 and 40 °C. The elastic modulus of the adhesive was monitored through EMM-ARM (Elasticity Modulus Monitoring through Ambient Response Method). Direct pull-out tests with concrete specimens strengthened with NSM CFRP strips were carried out at the same three distinct temperatures to compare the evolution of bond performance with the E-modulus of epoxy since early ages. The results showed that increasing the curing temperature significantly accelerated both the curing process of the epoxy adhesive and the evolution of bond performance. The EMM-ARM technique has revealed its ability in clearly identifying the hardening kinetics of epoxy adhesives, allowing also thermal activation analysis. Finally, existing models for predicting temperature-dependent mechanical properties were extended to also describe the bond behaviour of NSM-CFRP applications.
Tipoarticle
URIhttp://hdl.handle.net/1822/42059
DOI10.1016/j.compositesb.2015.11.034
ISSN1359-8368
Arbitragem científicayes
AcessoopenAccess
Aparece nas coleções:ISISE - Artigos em Revistas Internacionais

Ficheiros deste registo:
Ficheiro Descrição TamanhoFormato 
JCOMB-D-15-01555_Revised Manuscript_TO_REP.pdf1,5 MBAdobe PDFVer/Abrir

Partilhe no FacebookPartilhe no TwitterPartilhe no DeliciousPartilhe no LinkedInPartilhe no DiggAdicionar ao Google BookmarksPartilhe no MySpacePartilhe no Orkut
Exporte no formato BibTex mendeley Exporte no formato Endnote Adicione ao seu Currículo DeGóis