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Numerical simulation on the square column's strengthening characteristics utilizing the SCC jacketing

  • Ammar Tawashi (Department of Structural Engineering, Al-Baath University, Faculty of Civil Engineering) ;
  • Soleman Alamoudi (Department of Structural Engineering, Al-Baath University, Faculty of Civil Engineering) ;
  • Abdulkadir Aljundi (Department of Civil Engineering, Al-Wataniya Private University, Faculty of Engineering)
  • Received : 2023.07.08
  • Accepted : 2023.12.16
  • Published : 2023.12.25
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Abstract

This research aims to simulate and investigate the efficiency of strengthening damaged concrete columns using concrete jacketing.The numerical program included unjacketed reference column made of ordinary RC concrete had a cross-sectional dimension of (100×100) mm and 560 mm long reinforced concrete. These cores were damaged by loading them with approximately 60% of their actual ultimate load capacities as a service load. Then, column specimens were strengthened by applying two types of self-compacting concrete SCC jacketing, which were 25 and 30 mm thick, on all four sides. Exposed to external loads at different directions vertically and horizontally simulate to the seismic load. The 3D Finite Element (FE) simulation is used to predict of three structural criteria that were selected and evaluated (deflection, stress, cracks). The results show that the failure of the strengthening columns is interesting and corresponds to the characteristics of the cracks formed in the concrete section,which was documented numerically using 3D Finite Element (FE). A significant improvement of deflection has been noted at the values at the top SECTION of columns compared to the reference sample reaching an average of up to 36.6% when using a 25 mm thick SCC-3500 jacket.

Keywords

References

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