The paper presents a part of an experimental program performed on composite steel-concrete slender shear walls, retrofitted using CFRP composites. The reinforced concrete (RC) elements were tested initially cyclic under lateral loads. The experimental program was performed on two shear walls with steel encased profiles tested prior to failure, thereafter retrofitted and retested. The retrofitting solution consists in rehabilitation of tested elements using Carbon Fiber Reinforced Polymer (CFRP) composites. Before retrofitting, the damaged specimens were repaired by replacing the crushed concrete with high-strength repair mortar. The experimental specimens were provided with CFRP strips and plates, to restore the bending resistance of the walls and to provide confinement effect at the ends. The aim of this study is to analyze the possibilities of using CFRP materials for strengthening the shear walls affected by seismic action. The retrofitting solution used and the failure mode is presented for each tested element. The behavior and envelope curves, ductility and energy dissipation and the stiffness degradation are presented comparatively for the strengthened and for the reference elements.
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