Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/68150
Título: | Bond behaviour of NSM CFRP laminate strip systems in concrete using stiff and flexible adhesives |
Autor(es): | Ricardo Cruz, José Sena-Cruz, José Rezazadeh, Mohammadali Seręga, Szymon Pereira, Eduardo Kwiecień, Arkadiusz Zając, Bogusław |
Palavras-chave: | CFRP composite materials NSM technique Stiff and flexible adhesives Bond behaviour Analytical model Numerical simulations Simple uncoupled interface model |
Data: | Nov-2020 |
Editora: | Elsevier 1 |
Revista: | Composite Structures |
Citação: | Cruz, J. R., Sena-Cruz, J., Rezazadeh, M., Seręga, S., Pereira, E., Kwiecień, A., & Zając, B. (2020). Bond behaviour of NSM CFRP laminate strip systems in concrete using stiff and flexible adhesives. Composite Structures, 112369 |
Resumo(s): | The influence of the adhesive type on bond behaviour between concrete and Carbon Fibre Reinforced Polymers (CFRP) laminate strips, in the context of Near Surface Mounted (NSM) strengthening technique, is considered as crucial for an efficient design. Thus, direct pullout tests were carried out to assess the influence of i) type of adhesive ii) CFRP cross-section and (iii) bond length on behaviour of NSM-CFRP system. Two types of stiff adhesives and one type of flexible adhesive were studied. For similar bond lengths, significantly higher maximum pullout force and bond stiffness were observed in the case of stiff adhesives, while noticeably higher slip at maximum force was achieved with the flexible adhesive. Analytical and numerical investigations were carried out in order to determine the local bond stress-slip relationships for both stiff and flexible adhesives. After demonstrating its good predictive performance, the analytical approach was used to design curves of the required anchorage lengths of NSM-CFRP system at ultimate limit state conditions. For the analytically calibrated mechanical parameters of NSM bond-slip law a two-dimensional numerical model of the direct pullout tests was worked out. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/68150 |
DOI: | 10.1016/j.compstruct.2020.112369 |
ISSN: | 0263-8223 |
e-ISSN: | 1879-1085 |
Versão da editora: | https://www.sciencedirect.com/science/article/pii/S0263822319347737 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | ISISE - Artigos em Revistas Internacionais |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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COST_2019_4520_Manuscript_R1_RepositoriUM.pdf | Artigo | 3,26 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons