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Performance of concrete-filled SHCC tubes under axial compression: Numerical investigation
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Volume Title: ICASGE2023
DOI: ICASGE-RCS
Authors
Faculty of Engineering, Tanta University, Egypt
Abstract
It is well known that conventional concrete columns suffer from durability and strength issues. That is because of the brittleness of concrete and its low tensile strength. In order to enhance the behavior of such columns, new materials that outperform concrete, such as ultra-high performance (UHP) concrete, reactive powder concrete (RPC), and strain-hardening cementitious composite (SHCC), are utilized. However, the cost of these materials restricts their application. In this paper, the behavior of a new composite column consisting of a prefabricated SHCC tube filled with concrete is investigated numerically using commercially available finite element analysis software. The finite element (FE) method was first verified by experimental results and showed good agreement. Then, with confidence in the FE model, a comprehensive parametric study was conducted. The effects of the type (tied/spiral) and the ratio of transverse reinforcement embedded in the SHCC tube on the performance of the composite column are evaluated. Various thicknesses of the tube were taken to optimize the material cost while maintaining performance. In addition, various concrete strengths of the filling NSC were studied.
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