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Commenced in January 2007 Frequency: Monthly Edition: International Publications Count: 29414

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Time-Dependent Behavior of Damaged Reinforced Concrete Shear Walls Strengthened with Composite Plates Having Variable Fibers Spacing
In this study, the time-dependent behavior of damaged reinforced concrete shear wall structures strengthened with composite plates having variable fibers spacing was investigated to analyze their seismic response. In the analytical formulation, the adherent and the adhesive layers are all modeled as shear walls, using the mixed Finite Element Method (FEM). The anisotropic damage model is adopted to describe the damage extent of the Reinforced Concrete shear walls. The phenomenon of creep and shrinkage of concrete has been determined by Eurocode 2. Large earthquakes recorded in Algeria (El-Asnam and Boumerdes) have been tested to demonstrate the accuracy of the proposed method. Numerical results are obtained for non-uniform distributions of carbon fibers in epoxy matrices. The effects of damage extent and the delay mechanism creep and shrinkage of concrete are highlighted. Prospects are being studied.
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[1] S. Benyoucef, A. Tounsi, S. A. Meftah, E.A. Adda Bedia "Approximate analysis of the interfacial stress concentrations in FRP-RC hybrid beams". Composite Interface Journal, 13, 561-571, (2006).
[2] A. Tounsi "Improved theoretical solution for interfacial stresses in concrete beams strengthened with FRP plates", International Journal of Solids and Structures, 43, 4154- 4174, (2006).
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[4] S.A. Meftah, R. Yeghnem, A. Tounsi, E.A. AddaBedia "Seismic behavior of RC coupled shear walls repaired with CFRP laminates having variable fibres spacing", Journal of Construction and building materials, 21, 1661-1671, (2007).
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