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Earthquakes and Structures
  Volume 15, Number 2, August 2018 , pages 165-178

A new method for repair of fiber reinforced concrete corbels using steel threaded rods
Mehmet Eren Gulsan and Mustafa A. Shaikhan

    The aim of this study is to investigate the efficiency of using threaded rods and steel profiles to produce a steel confining system for rehabilitation of damaged concrete corbels for the first time in literature. Some of the specimens were repaired by crack repair epoxy before being confined for further enhancement. A total of 19 two sided damaged corbels were used in the study with different mechanical properties and parameters but similar dimensions. The differences were in rehabilitation style, shear span, fiber percentage, reinforcement steel diameter, and concrete strength. The rehabilitated specimens were loaded with vertical load until failure. Four different configurations were used in the investigation. Test results show that the proposed rehabilitation technique is effective to enhance the load capacity of the corbels and to improve their ductility. Moreover, new formulations were proposed to calculate the load capacity of the rehabilitated corbels. A good fit was observed between numerical and experimental results.
Key Words
    corbels; rehabilitation; external steel; epoxy; threaded rods; repair; concrete; load capacity; ductility
Mehmet Eren Gulsan and Mustafa A. Shaikhan: Department of Civil Engineering, Gaziantep University, University Avenue, Central Campus, Gaziantep, Turkey

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