The impact of utilizing ultra-high performance fiber-reinforced concrete in beam-column joints with different patterns of transverse reinforcement
This research studies and assesses the possibility of employing ultra-high performance fiber reinforced concrete (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. No...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2023-04-01
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| Series: | Frattura ed Integrità Strutturale |
| Subjects: | |
| Online Access: | https://www.fracturae.com/index.php/fis/article/view/3995/3774 |
| _version_ | 1797815101939515392 |
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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 |
| description | This research studies and assesses the possibility of employing ultra-high performance fiber reinforced concrete (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 cast UHPFRC in the joint zone only and reduce or eliminate these stirrups in the case of UHPFRC. |
| first_indexed | 2024-03-13T08:17:42Z |
| format | Article |
| id | doaj.art-6425c86ffdb64a498de83f257e179e3f |
| institution | Directory Open Access Journal |
| issn | 1971-8993 |
| language | English |
| last_indexed | 2024-03-13T08:17:42Z |
| publishDate | 2023-04-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Frattura ed Integrità Strutturale |
| spelling | doaj.art-6425c86ffdb64a498de83f257e179e3f2023-05-31T13:13:32ZengGruppo Italiano FratturaFrattura ed Integrità Strutturale1971-89932023-04-011764113010.3221/IGF-ESIS.64.0210.3221/IGF-ESIS.64.02The impact of utilizing ultra-high performance fiber-reinforced concrete in beam-column joints with different patterns of transverse reinforcementAyman AbdoHeba A. MohamedTalaat RyadSayed AhmedThis research studies and assesses the possibility of employing ultra-high performance fiber reinforced concrete (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 cast UHPFRC in the joint zone only and reduce or eliminate these stirrups in the case of UHPFRC.https://www.fracturae.com/index.php/fis/article/view/3995/3774uhpfrcbcjrepeated loadingshear reinforcementcrack pattern |
| spellingShingle | Ayman Abdo Heba A. Mohamed Talaat Ryad Sayed Ahmed The impact of utilizing ultra-high performance fiber-reinforced concrete in beam-column joints with different patterns of transverse reinforcement Frattura ed Integrità Strutturale uhpfrc bcj repeated loading shear reinforcement crack pattern |
| title | The impact of utilizing ultra-high performance fiber-reinforced concrete in beam-column joints with different patterns of transverse reinforcement |
| title_full | The impact of utilizing ultra-high performance fiber-reinforced concrete in beam-column joints with different patterns of transverse reinforcement |
| title_fullStr | The impact of utilizing ultra-high performance fiber-reinforced concrete in beam-column joints with different patterns of transverse reinforcement |
| title_full_unstemmed | The impact of utilizing ultra-high performance fiber-reinforced concrete in beam-column joints with different patterns of transverse reinforcement |
| title_short | The impact of utilizing ultra-high performance fiber-reinforced concrete in beam-column joints with different patterns of transverse reinforcement |
| title_sort | impact of utilizing ultra high performance fiber reinforced concrete in beam column joints with different patterns of transverse reinforcement |
| topic | uhpfrc bcj repeated loading shear reinforcement crack pattern |
| url | https://www.fracturae.com/index.php/fis/article/view/3995/3774 |
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