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Publicação
Experimental and numerical evaluation of bond properties between reinforcement and concrete
Orientador(es)
Resumo(s)
A study of the bond behaviour between steel reinforcement bars and four different types of
surrounding concrete: normal strength concrete (NSC), steel fibber reinforced concrete
(SFRC) and two structural lightweight aggregate concretes (SLWAC) is here presented. Five
beam-tests according to Standard RILEM (1982) [5] were conducted on specimens under
monotonously increased loading. Bond-slip response curves between concretes and
reinforcement are obtained and discussed.
The results obtained show that standard bond length of 10∅d is not adequate to determine
bond characteristics of reinforcement in concretes with grades higher than C 25/30. Bond
failure of the NSC beam did not occur but the bar itself failed. Bond failure was observed for
NSC beam and for LWAC and SFRC beams when reduced bond length of 5∅d was used.
A numerical simulation of the beam tests using the finite element method analysis, using
bond-slip model of CEB-FIP Model Code 1990 [1] and real properties of test materials, was
also carried out and the results are compared with the experimental values.
Descrição
Palavras-chave
Bond Slip Bond stress Normal-strength concrete RILEM beam test
Contexto Educativo
Citação
Moreno, Carlos; Bastos, Ana Sarmento (2006). Experimental and numerical evaluation of bond properties between reinforcement and concrete. In 5th International Conference on Mechanics and Materials in Design. Porto. p.37-38