Performance of Under Shear Reinforced Concrete Beams with Varying Strength against Static and Impact Load

Document Type : Research Papers

Authors

1 Assistant Professor, Department of Civil Engineering, Dr. B.R. Ambedkar National Institute of Technology, Jalandhar, Punjab, India.

2 Research Scholar, Department of Civil Engineering, Dr. B.R. Ambedkar National Institute of Technology, Jalandhar, Punjab, India.

Abstract

An attempt has been made to study the response of under shear Reinforced Concrete (RC) beams with varying strength concrete under static and impact loads. The experiment has been performed on beam strength as 20, 30, 40, and 50 MPa having cross sections of 50 × 100 mm with a span of 1.1 m. Also, a benchmark study was performed under a four-point bending static test, and further, three-point bending was converted theoretically in order to keep the test configuration equivalent to a three-point impact load test for comparison. The resistance of RC beams was studied in terms of impact force versus time and the deformed profile. It was observed that the resistance of beams was found to increase with increasing the strength of concrete; however, the beams were failed by shear. The reason may be due to the lack of shear capacity. The peak static force by four-point bending tests was found to be 33% higher than that of three-point bending tests. It was also observed that the Dynamic Amplification Factor (DAF) increases with an increase of concrete strength, and the highest DAF was found to be 4.75, corresponding to M50 concrete, whereas the same was found to be 3.5, corresponding to M20 concrete.

Keywords

References

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Civil Engineering Infrastructures Journal
Volume 59, Issue 1
June 2026
Pages 189-206

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History

  • Receive Date: 30 July 2024
  • Revise Date: 14 October 2024
  • Accept Date: 08 November 2024

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