Abstract
The interfacial fatigue crack growth behavior on the interface between prestressed FRP and concrete of the strengthened beams under cyclic bending loads were studied by fracture mechanics theoretical method and fatigue crack growth testing method. The results showed that the interfacial crack growth process on the RC beams strengthened with prestressed carbon fiber laminate (CFL) under cyclic bending loads could be divided into three stages: 1) rapid growth stage; 2) steady growth stage; 3) unstable growth stage. In the rapid growth stage and steady growth stage, the interfacial fatigue crack growth rate could be described effectively with Paris-Erdogan expression. Where, the stress intensity factor of the interfacial crack, KII, could be obtained by calculating the energy release rate of the interfacial crack, GII, with the fracture mechanics theoretical method.
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© 2011 Tsinghua University Press, Beijing and Springer-Verlag Berlin Heidelberg
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Zhou, H., Huang, P., Li, Z., Zheng, X., Xie, J. (2011). Interfacial Crack Growth Behavior on RC Beams Strengthened with Prestressed CFL under Cyclic Bending Loads. In: Ye, L., Feng, P., Yue, Q. (eds) Advances in FRP Composites in Civil Engineering. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-17487-2_72
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DOI: https://doi.org/10.1007/978-3-642-17487-2_72
Publisher Name: Springer, Berlin, Heidelberg
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