Behavior of Repaired Reinforced Normal and High Strength Concrete Beams Failed in Shear

Authors

  • Bayan S. Al-Nu’man Civil Engineering Dept., College of Engineering, Al-Mustansiriya University, Baghdad, Iraq Author
  • Mohammed Hashim Al-Sahlani Civil Engineering Dept., College of Engineering, Al-Mustansiriya University, Baghdad, Iraq Author
  • Suha Rasheed Abbas Civil Engineering Dept., College of Engineering, Al-Mustansiriya University, Baghdad, Iraq Author

Keywords:

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Abstract

This paper presents investigation on the strength and deformation characteristics of reinforced normal and high strength concrete rectangular beams failed in shear and repaired by epoxy injection.Eight simply supported reinforced concrete beams without shear reinforcement are tested, four of which are made with normal-strength concrete (NSC) and four with high-strength concrete (HSC). The span of the simply supported beams is 1.28 m with 100 mm wide by 200 mm deep cross section. All are tested under two-point loads.Method of epoxy injection is used to repair cracks in the failed-in-shear beams. Careful repair process is adopted and proved successful.Main conclusions are: successful repair method is used to increase or at least restore shear capacity of beams; the increase is observed higher in normal-strength beams; repaired diagonal shear cracks do not reopen (generally) after retesting, instead, new nearby diagonal shear cracks are developed and the repaired beams show a lower stiffness and greater ductility than original beams.

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Key Dates

Published

2007-12-01

Issue

Vol. 11 No. 3 (2007): Journal of Engineering and Development

Section

Articles

License

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

The Journal of Engineering and Sustainable Development is an open-access journal that all contents are free of charge. Articles of this journal are licensed under the terms of the Creative Commons Attribution International Public License CC-BY 4.0 (https://creativecommons.org/licenses/by/4.0/legalcode) that licensees are unrestrictly allowed to search, download, share, distribute, print, or link to the full texts of the articles, crawl them for indexing and reproduce any medium of the articles provided that they give the author(s) proper credits (citation). The journal allows the author(s) to retain the copyright of their published article.
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How to Cite

Behavior of Repaired Reinforced Normal and High Strength Concrete Beams Failed in Shear. (2007). Journal of Engineering and Sustainable Development, 11(3), 39-60. https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1743