Carbon fibre reinforced polymer (CFRP) has been used frequently to retrofit concrete structures. Strengthening efficiency is related to the CFRP application process and the characteristics of the bonding agent. In this paper the mechanism of interface shear behaviour in CFRP to concrete beams is discussed considering previous test observations and mathematical models. This paper then discusses the consequences of introducing interface slip which reduces the integrity of the composite section, however improve ductility and delay debonding failure. The paper suggests that using softer bonding agent as well as setting limits on the interface slip could ensure acceptable serviceability and ductile behaviour.
History
Event
Concrete Institute of Australia. Conference (25th : 2011 : Perth, W. A.)
Pagination
1 - 10
Publisher
Concrete Institute of Australia
Location
Perth, W. A.
Place of publication
[Perth, W. A.]
Start date
2011-10-12
End date
2011-10-14
Language
eng
Publication classification
E1 Full written paper - refereed
Copyright notice
2011, Concrete Institute of Australia
Title of proceedings
Concrete 2011 : Proceedings of the 25th Biennial Conference of the Concrete Institute of Australia : Building a Sustainable Future