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A novel strengthening technique against short column failure in RC structures: SIFCON panels

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Abstract

In this study, a new strengthening method has been developed against possible short column damage, which is one of the dangerous damages that may cause the collapse of buildings in reinforced concrete columns. For this purpose, 14 reinforced concrete frame tests with 1/3 geometric scale, which differ from each other in the ground floor infill wall lengths, were carried out. 5 of the reinforced concrete frames were produced as reference specimens, and in 9 specimens, short columns in reinforced concrete frames were strengthened with various panel types produced using SIFCON (Slurry Infiltrated Fiber Concrete), an ultra-performance special concrete. In the study, the effects of SIFCON panels on short column damages were examined by evaluating the test results in terms of strength, energy consumption, stiffness, ductility and damage formation. Against the short column effects, it was determined that the specimens strengthened with S3 type panels placed along the short column showed the best performance. The load carrying capacities of the strengthened specimens were found to be higher, varying between 34 and 80%, compared to the reference specimens with the same characteristics. In addition, it was observed that the initial stiffness and cumulative energy consumption values of strengthened specimens reached up to 2 and 2.25 times, respectively, compared to the reference specimens with the same characteristics.

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Acknowledgements

This study was prepared from the master thesis of Fatih Kayacık with the advisor of Alptuğ Ünal and co-advisor of Gamze Doğan, which was accepted by Konya Technical University, Graduate Education Institute, Department of Civil Engineering.

Funding

This research was supported by TUBITAK (The Scientific and Technological Research Council of Turkey) under grant number 120M029.

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Authors and Affiliations

  1. Konya Technical University, Konya, Turkey

    Fatih Kayacık, Alptuğ Ünal & Gamze Doğan

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  1. Fatih Kayacık
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  2. Alptuğ Ünal
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  3. Gamze Doğan
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Correspondence to Gamze Doğan.

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Kayacık, F., Ünal, A. & Doğan, G. A novel strengthening technique against short column failure in RC structures: SIFCON panels. Bull Earthquake Eng 21, 2013–2044 (2023). https://doi.org/10.1007/s10518-022-01603-9

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