An Experimental Study on Bond Behavior of Rebar and High-Performance Fiber Reinforced Cementitious Composite (HPFRCC) at High Temperatures
In this work, it was attempted to explore the bond behavior of rebars in high-performance fiber-reinforced cementitious composite (HPFRCC) consisting of hybrid fibers with 1 and 2% by weight of binder for steel and 0.1, 0.2, 0.3, and 0.4% by weight of binder for polypropylene (PP) and polyvinyl alco...
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Semnan University
2024-02-01
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| Series: | Journal of Rehabilitation in Civil Engineering |
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| Online Access: | https://civiljournal.semnan.ac.ir/article_7972_67c9a1e7e490539dfbf684eb3bbaf3b4.pdf |
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| author | Salim Karimpour Rahmat Madandous Malek Mohammad Ranjbar Habib Akbarzadeh Bengar |
| author_facet | Salim Karimpour Rahmat Madandous Malek Mohammad Ranjbar Habib Akbarzadeh Bengar |
| author_sort | Salim Karimpour |
| collection | DOAJ |
| description | In this work, it was attempted to explore the bond behavior of rebars in high-performance fiber-reinforced cementitious composite (HPFRCC) consisting of hybrid fibers with 1 and 2% by weight of binder for steel and 0.1, 0.2, 0.3, and 0.4% by weight of binder for polypropylene (PP) and polyvinyl alcohol (PVA) fibers along with the compressive and tensile strengths after exposure to high temperature. From 19 mix designs, four superior ones which experienced lower reduction in compressive strength at 400 and 600 oC was selected in order to investigate the bond behavior of rebar in HPFRCC specimens using direct pullout and RILEM beam tests. The experimental results revealed that the HPFRCC specimens with 1% steel fiber combined with 0.2% PP fiber and 0.3% PVA fiber, separately, had the minimum compressive strength loss at 400 and 600 °C. For the HPFRCC with 2% steel fiber, the higher compressive strength at the given temperatures was observed for those with 0.3% PP and 0.2% PVA fiber, separately. The specimens with higher compressive strength at the given temperatures were those that had 2% steel fibers, 0.3% PP, and 0.2% PVA fibers. The specimen with 1% steel fibers and 0.3% polypropylene fibers had a greater tensile strength with a value of 14.2 MPa compared to other specimens. Furthermore, the bond capacity of rebar in HPFRCC continues to decline with temperature rise up to 600 °C to the point where this reduction for the chosen specimens is approximately 62% of the bond strength of the specimens at the room temperature (i.e., 23 °C). The maximum pull-out force has a significant relationship with the type and proportion of fibers, as demonstrated by the RILEM beam's results. Compared to specimens containing PP fibers, those with PVA fibers at high temperatures were able to tolerate higher bond strength. |
| format | Article |
| id | doaj-art-21b346fe0cbe4bb1bf37e564d26e1310 |
| institution | Kabale University |
| issn | 2345-4415 2345-4423 |
| language | English |
| publishDate | 2024-02-01 |
| publisher | Semnan University |
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| series | Journal of Rehabilitation in Civil Engineering |
| spelling | doaj-art-21b346fe0cbe4bb1bf37e564d26e13102025-01-21T20:47:24ZengSemnan UniversityJournal of Rehabilitation in Civil Engineering2345-44152345-44232024-02-01121779110.22075/jrce.2023.29856.18107972An Experimental Study on Bond Behavior of Rebar and High-Performance Fiber Reinforced Cementitious Composite (HPFRCC) at High TemperaturesSalim Karimpour0Rahmat Madandous1Malek Mohammad Ranjbar2Habib Akbarzadeh Bengar3Ph.D. Student, Department of Civil Engineering, University of Guilan, Rasht, IranProfessor, Department of Civil Engineering, University of Guilan, Rasht, IranAssociate Professor, Department of Civil Engineering, University of Guilan, Rasht, IranAssociate Professor, Department of Civil Engineering, University of Mazandaran, Babolsar, IranIn this work, it was attempted to explore the bond behavior of rebars in high-performance fiber-reinforced cementitious composite (HPFRCC) consisting of hybrid fibers with 1 and 2% by weight of binder for steel and 0.1, 0.2, 0.3, and 0.4% by weight of binder for polypropylene (PP) and polyvinyl alcohol (PVA) fibers along with the compressive and tensile strengths after exposure to high temperature. From 19 mix designs, four superior ones which experienced lower reduction in compressive strength at 400 and 600 oC was selected in order to investigate the bond behavior of rebar in HPFRCC specimens using direct pullout and RILEM beam tests. The experimental results revealed that the HPFRCC specimens with 1% steel fiber combined with 0.2% PP fiber and 0.3% PVA fiber, separately, had the minimum compressive strength loss at 400 and 600 °C. For the HPFRCC with 2% steel fiber, the higher compressive strength at the given temperatures was observed for those with 0.3% PP and 0.2% PVA fiber, separately. The specimens with higher compressive strength at the given temperatures were those that had 2% steel fibers, 0.3% PP, and 0.2% PVA fibers. The specimen with 1% steel fibers and 0.3% polypropylene fibers had a greater tensile strength with a value of 14.2 MPa compared to other specimens. Furthermore, the bond capacity of rebar in HPFRCC continues to decline with temperature rise up to 600 °C to the point where this reduction for the chosen specimens is approximately 62% of the bond strength of the specimens at the room temperature (i.e., 23 °C). The maximum pull-out force has a significant relationship with the type and proportion of fibers, as demonstrated by the RILEM beam's results. Compared to specimens containing PP fibers, those with PVA fibers at high temperatures were able to tolerate higher bond strength.https://civiljournal.semnan.ac.ir/article_7972_67c9a1e7e490539dfbf684eb3bbaf3b4.pdfbond behaviorhpfrccpva fibrerilem testpullout test |
| spellingShingle | Salim Karimpour Rahmat Madandous Malek Mohammad Ranjbar Habib Akbarzadeh Bengar An Experimental Study on Bond Behavior of Rebar and High-Performance Fiber Reinforced Cementitious Composite (HPFRCC) at High Temperatures Journal of Rehabilitation in Civil Engineering bond behavior hpfrcc pva fibre rilem test pullout test |
| title | An Experimental Study on Bond Behavior of Rebar and High-Performance Fiber Reinforced Cementitious Composite (HPFRCC) at High Temperatures |
| title_full | An Experimental Study on Bond Behavior of Rebar and High-Performance Fiber Reinforced Cementitious Composite (HPFRCC) at High Temperatures |
| title_fullStr | An Experimental Study on Bond Behavior of Rebar and High-Performance Fiber Reinforced Cementitious Composite (HPFRCC) at High Temperatures |
| title_full_unstemmed | An Experimental Study on Bond Behavior of Rebar and High-Performance Fiber Reinforced Cementitious Composite (HPFRCC) at High Temperatures |
| title_short | An Experimental Study on Bond Behavior of Rebar and High-Performance Fiber Reinforced Cementitious Composite (HPFRCC) at High Temperatures |
| title_sort | experimental study on bond behavior of rebar and high performance fiber reinforced cementitious composite hpfrcc at high temperatures |
| topic | bond behavior hpfrcc pva fibre rilem test pullout test |
| url | https://civiljournal.semnan.ac.ir/article_7972_67c9a1e7e490539dfbf684eb3bbaf3b4.pdf |
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