Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/45449
Título: | Time-dependent fibre pull-out behaviour in self-compacting concrete |
Autor(es): | Abrishambaf, Amin Barros, Joaquim A. O. Cunha, Vitor M. C. F. Frazão, Cristina Maria Vieira |
Palavras-chave: | Time-dependent behaviour Long-term load Creep Fibre pull-out Bond Steel fibre reinforced selfcompacting concrete |
Data: | 2017 |
Editora: | Elsevier 1 |
Revista: | Cement and Concrete Composites |
Resumo(s): | In the present study, the effectiveness of a fibre as an element for transferring stresses across cracks under a sustained load was assessed. Single fibre pull-out creep tests were performed, in which fibre slip was monitored as a function of the time. The influence of the fibre orientation angle (0, 30 and 60 degrees), as well as pre-imposed fibre slip levels, spr, 0.3 and 0.5 mm on the creep response was investigated. Additionally, instantaneous fibre pull-out tests were carried out on undamaged-bond specimens in order to quantify the effects of the pull-out creep behaviour. The damage introduced by the pre-slip levels in the bond of the fibre/matrix interface influenced the long-term fibre pull-out behaviour and, consequently, accelerated the creep rate. However, the assembled pull-out creep behaviour did not differ considerably from the instantaneous pull-out behaviour for the adopted pre-imposed fibre slip levels. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/45449 |
DOI: | 10.1016/j.cemconcomp.2016.12.004 |
ISSN: | 0958-9465 |
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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IJ(ISI)_139.pdf | 1,66 MB | Adobe PDF | Ver/Abrir |