Manufacturing Technology 2024, 24(4):567-577 | DOI: 10.21062/mft.2024.071

Ultimate Response of Strengthened RC Beams in the Flexural Using Plain Cementitious Composites Layer

Ashraf M. Heniegal ORCID...1, Hamdy M. Afefy ORCID...2,3, Ahmed T. Baraghith ORCID...2, Mostafa Eldwiny ORCID...4, Omar Mohamed Omar Ibrahim ORCID...5
1 Faculty of Engineering, Suez University, Egypt
2 Faculty of Engineering, Tanta University, Tanta, Egypt
3 Faculty of Engineering, Pharos University, Alexandria, Egypt
4 Faculty of Technology and Education, Beni-Suef University, Egypt
5 Faculty of Technology and Education, Suez University, Egypt

This paper aims to study the efficiency of using prefabricated layers made from plain cementitious composite materials for enhancing the flexural behavior of reinforced concrete (RC) continuous beams. The strengthening system was applied at 20 mm thickness, 150 mm width, and adequate development length. The prefabricated layers were placed in the tension cover in the positive and negative zones. All beams have the same geometric dimensions and positive and negative steel reinforcement ratios. The results showed that the prefabricated layer was deformed with the RC specimen without debonding, which enhanced the cracking patterns and distributed the crack width. A slight improvement in the strengthened beam capacity was 7% for the yielding load and 6% for the ultimate load. The energy absorption capacity of the strengthened beam decreased by 30.67%, whereas both beams achieved the same ductility index.

Keywords: Continuous beams, Prefabricated layers, Cementitious composite materials

Received: April 12, 2024; Revised: July 11, 2024; Accepted: August 6, 2024; Prepublished online: August 6, 2024; Published: September 1, 2024  Show citation

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Heniegal AM, Afefy HM, Baraghith AT, Eldwiny M, Ibrahim OMO. Ultimate Response of Strengthened RC Beams in the Flexural Using Plain Cementitious Composites Layer. Manufacturing Technology. 2024;24(4):567-577. doi: 10.21062/mft.2024.071.
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