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A Design Method to Induce Ductile Failure of Flexural Strengthened One-Way RC Slabs
Huy Q Nguyen1, Tri N M Nguyen2, Do Hyung Lee3
1Department of Civil Engineering, Kyungnam University, Changwon-si 51767, Korea.
Abstract:
Strengthening existing reinforced concrete (RC) slabs using externally bonded materials is increasingly popular due to its adaptability and versatility. Nevertheless, ductility reduction of the rehabilitated flexural members with these materials can lead to brittle shear failure. Therefore, a new approach for strengthening is necessary. This paper presents a methodology to induce ductile failure of flexural strengthened one-way RC slabs. Ultimate failure loads can be considered to develop the proposed design methodology. Different failure modes corresponding to ultimate failure loads for RC slabs are addressed. Flexural and shear failure regions of RC slabs can be established by considering the failure modes. The end span of the concrete slab is shown for a case study, and numerical examples are solved to prove the essentiality of this methodology.
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