Flexural and Shear Strengthening of High-Strength Concrete Beams Using near Surface Basalt Fiber Bars
Strengthening of reinforced concrete (RC) structures has become a primary challenge in civil engineering. Different materials and procedures have been used in order to repair or strengthen RC structures. In this research, the NSM-Basalt Bar (NSM-BFRP) technique was used to strengthen high-strength r...
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MDPI AG
2024-12-01
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| Series: | Infrastructures |
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| Online Access: | https://www.mdpi.com/2412-3811/10/1/1 |
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| author | Ahmed Ashteyat Ala’ Taleb Obaidat Ahmad Al-Khreisat Mu’tasime Abdel-Jaber |
| author_facet | Ahmed Ashteyat Ala’ Taleb Obaidat Ahmad Al-Khreisat Mu’tasime Abdel-Jaber |
| author_sort | Ahmed Ashteyat |
| collection | DOAJ |
| description | Strengthening of reinforced concrete (RC) structures has become a primary challenge in civil engineering. Different materials and procedures have been used in order to repair or strengthen RC structures. In this research, the NSM-Basalt Bar (NSM-BFRP) technique was used to strengthen high-strength reinforced concrete beams in flexure and shear. Twelve beams were designed, constructed, and tested under four-point loads. Six of them were designed to have insufficient longitudinal steel reinforcement to make sure that the failure would be a flexural failure in the control beam. Whereas, the other six specimens were designed to have insufficient transverse steel reinforcement to make sure that the failure will be a shear failure in the control beam. All RC beams were strengthened using NSM-BFRP with different configurations except control specimens. The load deflection curve, the cracking pattern and the failure mode were evaluated. The experimental results reveal that NSM-BFRP bars significantly enhance the ultimate load capacity of high-strength concrete beams, with flexural capacity improvements of up to 33.33% and shear capacity enhancements of up to 63.5%. However, the use of BFRP bars also led to a shift in failure modes from flexural to shear, particularly in specimens with increased flexural reinforcement. The findings suggest that while NSM-BFRP bars are highly effective in strengthening concrete beams, careful consideration of the reinforcement configuration is necessary to avoid premature shear failure and ensure balanced structural performance. |
| format | Article |
| id | doaj-art-02007c0ee1414feb8e024f1723573c54 |
| institution | Kabale University |
| issn | 2412-3811 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Infrastructures |
| spelling | doaj-art-02007c0ee1414feb8e024f1723573c542025-01-24T13:35:21ZengMDPI AGInfrastructures2412-38112024-12-01101110.3390/infrastructures10010001Flexural and Shear Strengthening of High-Strength Concrete Beams Using near Surface Basalt Fiber BarsAhmed Ashteyat0Ala’ Taleb Obaidat1Ahmad Al-Khreisat2Mu’tasime Abdel-Jaber3Civil Engineering Department, The University of Jordan, Amman 11942, JordanCivil Engineering Department, Philadelphia University, Amman 19392, JordanCivil Engineering Department, Cairo University, Cairo 12613, EgyptCivil Engineering Department, The University of Jordan, Amman 11942, JordanStrengthening of reinforced concrete (RC) structures has become a primary challenge in civil engineering. Different materials and procedures have been used in order to repair or strengthen RC structures. In this research, the NSM-Basalt Bar (NSM-BFRP) technique was used to strengthen high-strength reinforced concrete beams in flexure and shear. Twelve beams were designed, constructed, and tested under four-point loads. Six of them were designed to have insufficient longitudinal steel reinforcement to make sure that the failure would be a flexural failure in the control beam. Whereas, the other six specimens were designed to have insufficient transverse steel reinforcement to make sure that the failure will be a shear failure in the control beam. All RC beams were strengthened using NSM-BFRP with different configurations except control specimens. The load deflection curve, the cracking pattern and the failure mode were evaluated. The experimental results reveal that NSM-BFRP bars significantly enhance the ultimate load capacity of high-strength concrete beams, with flexural capacity improvements of up to 33.33% and shear capacity enhancements of up to 63.5%. However, the use of BFRP bars also led to a shift in failure modes from flexural to shear, particularly in specimens with increased flexural reinforcement. The findings suggest that while NSM-BFRP bars are highly effective in strengthening concrete beams, careful consideration of the reinforcement configuration is necessary to avoid premature shear failure and ensure balanced structural performance.https://www.mdpi.com/2412-3811/10/1/1basalt barnear surfaceflexural strengtheningshear strengthening |
| spellingShingle | Ahmed Ashteyat Ala’ Taleb Obaidat Ahmad Al-Khreisat Mu’tasime Abdel-Jaber Flexural and Shear Strengthening of High-Strength Concrete Beams Using near Surface Basalt Fiber Bars Infrastructures basalt bar near surface flexural strengthening shear strengthening |
| title | Flexural and Shear Strengthening of High-Strength Concrete Beams Using near Surface Basalt Fiber Bars |
| title_full | Flexural and Shear Strengthening of High-Strength Concrete Beams Using near Surface Basalt Fiber Bars |
| title_fullStr | Flexural and Shear Strengthening of High-Strength Concrete Beams Using near Surface Basalt Fiber Bars |
| title_full_unstemmed | Flexural and Shear Strengthening of High-Strength Concrete Beams Using near Surface Basalt Fiber Bars |
| title_short | Flexural and Shear Strengthening of High-Strength Concrete Beams Using near Surface Basalt Fiber Bars |
| title_sort | flexural and shear strengthening of high strength concrete beams using near surface basalt fiber bars |
| topic | basalt bar near surface flexural strengthening shear strengthening |
| url | https://www.mdpi.com/2412-3811/10/1/1 |
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