Experimental and Numerical Investigation of Steel- and GFRP-Reinforced Concrete Beams Subject to Fire Exposure
This study investigates the behavior of three concrete beams reinforced with steel and GFRP bars under fire exposure. The fire tests of three beams were conducted including one control steel-reinforced concrete (RC) beam and two GFRP-RC beams. The beams were exposed to fire according to the standard...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-02-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/13/3/609 |
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| author | Chanachai Thongchom Linh Van Hong Bui Natthanuch Poonpan Natcha Phudtisarigorn Phuoc Trong Nguyen Suraparb Keawsawasvong Saeed Mousa |
| author_facet | Chanachai Thongchom Linh Van Hong Bui Natthanuch Poonpan Natcha Phudtisarigorn Phuoc Trong Nguyen Suraparb Keawsawasvong Saeed Mousa |
| author_sort | Chanachai Thongchom |
| collection | DOAJ |
| description | This study investigates the behavior of three concrete beams reinforced with steel and GFRP bars under fire exposure. The fire tests of three beams were conducted including one control steel-reinforced concrete (RC) beam and two GFRP-RC beams. The beams were exposed to fire according to the standard fire curve ISO 834 for 3 h. The investigation parameters included the reinforcement types (i.e., steel and GFRP bars) and diameter of GFRP bars. Based on the experimental results, during fire exposure, the deflection rate of the steel-RC beam was lower than the ones reinforced with GFRP bars. The critical temperatures measured at steel and GFRP bars in the steel-RC and GFRP-RC beams were 593 °C and 300–330 °C, respectively along with the fire durations of 83 and 33–36.4 min, respectively. The different GFRP bar sizes did not affect the fire resistance process. The steel-RC beam had greater fire resistance than the GFRP-RC beams. All test specimens had a fire resistance time lower than two hours. In addition, the 2D simplified finite element method (FEM) using commercial software ANSYS was performed to predict the thermal response of the beam section. Compared with experimental results, the FE model can reasonably predict the thermal responses of the beam sections. |
| first_indexed | 2024-03-11T06:50:28Z |
| format | Article |
| id | doaj.art-4963d35809574d7a86c21e5282c6f3aa |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-11T06:50:28Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-4963d35809574d7a86c21e5282c6f3aa2023-11-17T10:01:38ZengMDPI AGBuildings2075-53092023-02-0113360910.3390/buildings13030609Experimental and Numerical Investigation of Steel- and GFRP-Reinforced Concrete Beams Subject to Fire ExposureChanachai Thongchom0Linh Van Hong Bui1Natthanuch Poonpan2Natcha Phudtisarigorn3Phuoc Trong Nguyen4Suraparb Keawsawasvong5Saeed Mousa6Department of Civil Engineering, Faculty of Engineering, Thammasat School of Engineering, Thammasat University, Pathumthani 12120, ThailandAdvanced Retrofit Technology International Center, Advanced Research Laboratories, Tokyo City University, 1-28-1 Tamazutsumi, Tokyo 158-8557, JapanDepartment of Civil Engineering, Faculty of Engineering, Thammasat School of Engineering, Thammasat University, Pathumthani 12120, ThailandDepartment of Civil Engineering, Faculty of Engineering, Thammasat School of Engineering, Thammasat University, Pathumthani 12120, ThailandFaculty of Civil Engineering, Ho Chi Minh City Open University, 97 Vo Van Tan, District 3, Ho Chi Minh City 700000, VietnamDepartment of Civil Engineering, Faculty of Engineering, Thammasat School of Engineering, Thammasat University, Pathumthani 12120, ThailandFaculty of Engineering, Jazan University, Jazan 706, Saudi ArabiaThis study investigates the behavior of three concrete beams reinforced with steel and GFRP bars under fire exposure. The fire tests of three beams were conducted including one control steel-reinforced concrete (RC) beam and two GFRP-RC beams. The beams were exposed to fire according to the standard fire curve ISO 834 for 3 h. The investigation parameters included the reinforcement types (i.e., steel and GFRP bars) and diameter of GFRP bars. Based on the experimental results, during fire exposure, the deflection rate of the steel-RC beam was lower than the ones reinforced with GFRP bars. The critical temperatures measured at steel and GFRP bars in the steel-RC and GFRP-RC beams were 593 °C and 300–330 °C, respectively along with the fire durations of 83 and 33–36.4 min, respectively. The different GFRP bar sizes did not affect the fire resistance process. The steel-RC beam had greater fire resistance than the GFRP-RC beams. All test specimens had a fire resistance time lower than two hours. In addition, the 2D simplified finite element method (FEM) using commercial software ANSYS was performed to predict the thermal response of the beam section. Compared with experimental results, the FE model can reasonably predict the thermal responses of the beam sections.https://www.mdpi.com/2075-5309/13/3/609glass fiber-reinforced polymerfire resistanceconcrete beamfinite elementfire |
| spellingShingle | Chanachai Thongchom Linh Van Hong Bui Natthanuch Poonpan Natcha Phudtisarigorn Phuoc Trong Nguyen Suraparb Keawsawasvong Saeed Mousa Experimental and Numerical Investigation of Steel- and GFRP-Reinforced Concrete Beams Subject to Fire Exposure Buildings glass fiber-reinforced polymer fire resistance concrete beam finite element fire |
| title | Experimental and Numerical Investigation of Steel- and GFRP-Reinforced Concrete Beams Subject to Fire Exposure |
| title_full | Experimental and Numerical Investigation of Steel- and GFRP-Reinforced Concrete Beams Subject to Fire Exposure |
| title_fullStr | Experimental and Numerical Investigation of Steel- and GFRP-Reinforced Concrete Beams Subject to Fire Exposure |
| title_full_unstemmed | Experimental and Numerical Investigation of Steel- and GFRP-Reinforced Concrete Beams Subject to Fire Exposure |
| title_short | Experimental and Numerical Investigation of Steel- and GFRP-Reinforced Concrete Beams Subject to Fire Exposure |
| title_sort | experimental and numerical investigation of steel and gfrp reinforced concrete beams subject to fire exposure |
| topic | glass fiber-reinforced polymer fire resistance concrete beam finite element fire |
| url | https://www.mdpi.com/2075-5309/13/3/609 |
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