Experimental investigation of fibrous reinforced concrete beams under torsion loads | ||||
| Engineering Research Journal (Shoubra) | ||||
| Volume 52, Issue 2, April 2023, Page 172-176 PDF (1.15 MB) | ||||
| Document Type: Research articles | ||||
| DOI: 10.21608/erjsh.2023.191020.1138 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Mohamed Said Abdel-Ghaffar1; Ahmed Mohamed Salah-Eldin2; abeer Medhat erfan2; Ahmed Esam Salem  3
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| 1Department of civil engineering, Faculty of engineering at shoubra, Benha university, Cairo, Egypt. | ||||
| 2Department of civil engineering, Faculty of engineering at shoubra, Benha university, Cairo, Egypt | ||||
| 3Department of civil engineering, Higher Institute of Engineering, Shorouk City, Cairo, Egypt. | ||||
| Abstract | ||||
| This experimental work investigates the effect of hybrid fiber between polypropylene fiber (PPF), and glass fiber (GF) on the torsional behavior of fiber-reinforced concrete (FRC) beams. Five reinforced concrete (RC) beams were subjected to a test of pure torsion and loaded until failure. The tested beams had various fiber contents: Specimen 1 is a control beam (without fiber), specimen 2 contains 1% GF, specimen 3 contains 1% PPF, specimen 4 contains 1% GF and 1% PPF, and specimen 5 contains 1.5% GF and 1.5% PPF in terms of volume. In the experimental tests, the torsional moment, crack pattern, ductility, and energy absorption of specimens were determined. Tests demonstrated that using a hybrid of PPF and GF enhanced the torsional moment, ductility, and energy absorption of RC beams. Consequently, the maximum torsional strength increased by 29.14%, and 39.43% when (1% PPF and 1% GF), and (1.5% PPF and 1.5% GF) were added, respectively. | ||||
| Keywords | ||||
| Torsional behavior; hybrid fiber reinforced concrete beams; polypropylene fiber; and glass fiber | ||||
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