The impact of utilizing UHPFRC in beam-column joints with different patterns of transverse reinforcement
This research studies and assesses the possibility of employing UHPFRC in exterior beam-column joints (BCJs). Eight specimens with various concrete material characteristics and steel reinforcing details are cast and examined under repeated loads. Normal concrete with seismic reinforcing details is...
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Gruppo Italiano Frattura
2023-03-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://fracturae.com/index.php/fis/article/view/3995 |
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| author | Ayman Abdo Heba A. Mohamed Talaat Ryad Sayed Ahmed |
| author_facet | Ayman Abdo Heba A. Mohamed Talaat Ryad Sayed Ahmed |
| author_sort | Ayman Abdo |
| collection | DOAJ |
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This research studies and assesses the possibility of employing UHPFRC in exterior beam-column joints (BCJs). Eight specimens with various concrete material characteristics and steel reinforcing details are cast and examined under repeated loads. Normal concrete with seismic reinforcing details is used as a control specimen. For certain specimens, UHPC, UHPFRC with 1% steel fiber, and UHPFRC with 2% steel fiber are poured into all BCJs, and others are poured into the critical zone only. The consequences of removing stirrups from the joint were studied. All specimens' crack patterns, hysteresis and envelope curves, ductility factor, stiffness degradation, and energy dissipation are assessed and corresponded to the control sample. The results demonstrate that UHPFRC strengthened the joint, prevented crack development and extension and the shear failure in the joint, and formed the plastic hinge in the beams. UHPFRC outperforms normal concrete with seismic reinforcing details and UHPC without steel fiber in bearing capacity, ductility, stiffness, and energy dissipation. UHPFRC with 1% steel fiber enhanced joint behavior, while UHPFRC with 2% steel fiber was better. Casting the whole sample with UHPFRC achieved very little improvement. The presence of stirrups in the UHPFRC beam-column joint has little effect on its properties. It is more economical to casting UHPFRC in the joint zone only and reduce or eliminate these stirrups in the case of UHPFRC
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| format | Article |
| id | doaj-art-e0e938059fcf4a6fa6a1e46abbd9a178 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2023-03-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-e0e938059fcf4a6fa6a1e46abbd9a1782025-01-02T23:01:41ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932023-03-011764The impact of utilizing UHPFRC in beam-column joints with different patterns of transverse reinforcement Ayman Abdo0Heba A. Mohamed 1Talaat Ryad2Sayed Ahmed3University of Zagazig, Egypt University of Zagazig, Egypt University of Zagazig, Egypt University of Zagazig, Egypt This research studies and assesses the possibility of employing UHPFRC in exterior beam-column joints (BCJs). Eight specimens with various concrete material characteristics and steel reinforcing details are cast and examined under repeated loads. Normal concrete with seismic reinforcing details is used as a control specimen. For certain specimens, UHPC, UHPFRC with 1% steel fiber, and UHPFRC with 2% steel fiber are poured into all BCJs, and others are poured into the critical zone only. The consequences of removing stirrups from the joint were studied. All specimens' crack patterns, hysteresis and envelope curves, ductility factor, stiffness degradation, and energy dissipation are assessed and corresponded to the control sample. The results demonstrate that UHPFRC strengthened the joint, prevented crack development and extension and the shear failure in the joint, and formed the plastic hinge in the beams. UHPFRC outperforms normal concrete with seismic reinforcing details and UHPC without steel fiber in bearing capacity, ductility, stiffness, and energy dissipation. UHPFRC with 1% steel fiber enhanced joint behavior, while UHPFRC with 2% steel fiber was better. Casting the whole sample with UHPFRC achieved very little improvement. The presence of stirrups in the UHPFRC beam-column joint has little effect on its properties. It is more economical to casting UHPFRC in the joint zone only and reduce or eliminate these stirrups in the case of UHPFRC https://fracturae.com/index.php/fis/article/view/3995UHPFRCbeam-column jointsrepeated loadingshear reinforcementcrack patternremoving stirrups |
| spellingShingle | Ayman Abdo Heba A. Mohamed Talaat Ryad Sayed Ahmed The impact of utilizing UHPFRC in beam-column joints with different patterns of transverse reinforcement Fracture and Structural Integrity UHPFRC beam-column joints repeated loading shear reinforcement crack pattern removing stirrups |
| title | The impact of utilizing UHPFRC in beam-column joints with different patterns of transverse reinforcement |
| title_full | The impact of utilizing UHPFRC in beam-column joints with different patterns of transverse reinforcement |
| title_fullStr | The impact of utilizing UHPFRC in beam-column joints with different patterns of transverse reinforcement |
| title_full_unstemmed | The impact of utilizing UHPFRC in beam-column joints with different patterns of transverse reinforcement |
| title_short | The impact of utilizing UHPFRC in beam-column joints with different patterns of transverse reinforcement |
| title_sort | impact of utilizing uhpfrc in beam column joints with different patterns of transverse reinforcement |
| topic | UHPFRC beam-column joints repeated loading shear reinforcement crack pattern removing stirrups |
| url | https://fracturae.com/index.php/fis/article/view/3995 |
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