Effects of Locations of Adhesive Hollows on Interfacial Stress


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Fiber Reinforced Polymer (FRP) has been effectively used for strengthening concrete beams. In this study, nonlinear finite element (FE) model of the beam strengthened with CFRP is established to analyze the debonding failure caused by the adhesive hollow defects. The constitutive relationship of the adhesive layer in the FE models is similar to Monti’s bi-linear mode. Three different locations of the hollows are considered in the FE models. The principal stresses in the concrete, the debonding stresses in the adhesive and the stress in CFRP are calculated. The results show that the effect of the locations of the hollow is marginal on the principal stresses in the concrete. When the hollow appears close to the interfacial end, the debonding stresses in the adhesive and the shear stress in the CFRP are significant, which easily causes the debonding failure.



Key Engineering Materials (Volumes 462-463)

Edited by:

Ahmad Kamal Ariffin, Shahrum Abdullah, Aidy Ali, Andanastuti Muchtar, Mariyam Jameelah Ghazali and Zainuddin Sajuri






Z. H. Xie et al., "Effects of Locations of Adhesive Hollows on Interfacial Stress", Key Engineering Materials, Vols. 462-463, pp. 172-176, 2011

Online since:

January 2011




[1] J. Yao and J.G. Teng: Engineering Structures Vol. 29 (2007), p.2457.

[2] L.J. Li, Y.C. Guo, F Liu and J. Deng: Construction and Building Materials Vol. 23 (2009), p.2394.

[3] H. Niu, V.M. Karbhari and Z. Wu: Composites: Part B Vol. 37 (2006), p.627.

[4] J. Pan, K. Christopher and Y. Leung: Engineering Fracture Mechanics Vol. 74 (2007), p.132.

[5] J.G. Teng, S.T. Smith and J. Yao: Construction and Building Materials Vol. 17 (2003), p.447.

[6] C. Au, O. Buyukozturk: Engineering Fracture Mechanics Vol. 73 (2006), p.348.

[7] M. Monti, M. Renzelli and P. Luciani, in: Proc. of 6th International Symposium on FRP Reinforcement for Concrete Structures World, edited by Kiang Hwee Tan. Scientific Publications, Singapore (2003).

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