Experimental Study to Improve the Flexural Behavior of Recycled Reinforced Concrete Beams Using Separate and Hybrid Fibers of Steel and Kortta
Due to the fact that concrete is one of the most widely used construction materials and concrete has low ductility, tensile strength and flexural strength along with good compressive strength. To this end, in recent years, by adding fibers to concrete and making reinforced fiber concrete, these weak...
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University of Qom
2022-02-01
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| Series: | پژوهشهای زیرساختهای عمرانی |
| Subjects: | |
| Online Access: | https://cer.qom.ac.ir/article_1939_cfd36f50378b3a4f71d17e4dec7e5e61.pdf |
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| author | Abas Eskandari Fereydoon Omidinasab Ahmad Dalvand |
| author_facet | Abas Eskandari Fereydoon Omidinasab Ahmad Dalvand |
| author_sort | Abas Eskandari |
| collection | DOAJ |
| description | Due to the fact that concrete is one of the most widely used construction materials and concrete has low ductility, tensile strength and flexural strength along with good compressive strength. To this end, in recent years, by adding fibers to concrete and making reinforced fiber concrete, these weaknesses have been greatly improved. In this study, four samples of reinforced concrete beams were made with recycled aggregate and one sample of beams was made with natural aggregate and in real scale with dimensions of 150×50×20 centimeters. Separate and hybrid types of steel and Kortta fibers were used in the manufacture of beams. In three beam specimens, steel and Kortta fibers were used separately and hybrids and no fibers were used in the beam specimen. In fiber beams and one of the beams without fibers, recycled aggregate was used in their concrete and in one of the fabricated beams, neither fiber nor recycled aggregate was used and it was used as a reference sample in the performed studies. Four-point flexural strength test was performed on the samples. Fracture mode, flexural behavior parameters of beams made with recycled aggregates were investigated. The results showed that the addition of hybrid fibers has a very positive effect on improving the flexural behavior of reinforced concrete beams and eliminates the weakness of recycled aggregates in flexural behavior compared to beams made with natural aggregates. |
| first_indexed | 2024-04-24T16:08:35Z |
| format | Article |
| id | doaj.art-277275cd33154958beb09c8f592055cf |
| institution | Directory Open Access Journal |
| issn | 2783-140X |
| language | fas |
| last_indexed | 2024-04-24T16:08:35Z |
| publishDate | 2022-02-01 |
| publisher | University of Qom |
| record_format | Article |
| series | پژوهشهای زیرساختهای عمرانی |
| spelling | doaj.art-277275cd33154958beb09c8f592055cf2024-03-31T19:58:34ZfasUniversity of Qomپژوهشهای زیرساختهای عمرانی2783-140X2022-02-017211910.22091/cer.2021.7119.12661939Experimental Study to Improve the Flexural Behavior of Recycled Reinforced Concrete Beams Using Separate and Hybrid Fibers of Steel and KorttaAbas Eskandari0Fereydoon Omidinasab1Ahmad Dalvand2Master of Structural Engineering, Faculty of Engineering, Lorestan UniversityDepartment of Civil Engineering, Faculty of Engineering, Lorestan University, Khorramabad, IranDepartment of Engineering, Lorestan University, Khorramabad, IranDue to the fact that concrete is one of the most widely used construction materials and concrete has low ductility, tensile strength and flexural strength along with good compressive strength. To this end, in recent years, by adding fibers to concrete and making reinforced fiber concrete, these weaknesses have been greatly improved. In this study, four samples of reinforced concrete beams were made with recycled aggregate and one sample of beams was made with natural aggregate and in real scale with dimensions of 150×50×20 centimeters. Separate and hybrid types of steel and Kortta fibers were used in the manufacture of beams. In three beam specimens, steel and Kortta fibers were used separately and hybrids and no fibers were used in the beam specimen. In fiber beams and one of the beams without fibers, recycled aggregate was used in their concrete and in one of the fabricated beams, neither fiber nor recycled aggregate was used and it was used as a reference sample in the performed studies. Four-point flexural strength test was performed on the samples. Fracture mode, flexural behavior parameters of beams made with recycled aggregates were investigated. The results showed that the addition of hybrid fibers has a very positive effect on improving the flexural behavior of reinforced concrete beams and eliminates the weakness of recycled aggregates in flexural behavior compared to beams made with natural aggregates.https://cer.qom.ac.ir/article_1939_cfd36f50378b3a4f71d17e4dec7e5e61.pdfseparate fibershybrid fibersflexural behaviorreinforced concrete beamrecycled aggregate |
| spellingShingle | Abas Eskandari Fereydoon Omidinasab Ahmad Dalvand Experimental Study to Improve the Flexural Behavior of Recycled Reinforced Concrete Beams Using Separate and Hybrid Fibers of Steel and Kortta پژوهشهای زیرساختهای عمرانی separate fibers hybrid fibers flexural behavior reinforced concrete beam recycled aggregate |
| title | Experimental Study to Improve the Flexural Behavior of Recycled Reinforced Concrete Beams Using Separate and Hybrid Fibers of Steel and Kortta |
| title_full | Experimental Study to Improve the Flexural Behavior of Recycled Reinforced Concrete Beams Using Separate and Hybrid Fibers of Steel and Kortta |
| title_fullStr | Experimental Study to Improve the Flexural Behavior of Recycled Reinforced Concrete Beams Using Separate and Hybrid Fibers of Steel and Kortta |
| title_full_unstemmed | Experimental Study to Improve the Flexural Behavior of Recycled Reinforced Concrete Beams Using Separate and Hybrid Fibers of Steel and Kortta |
| title_short | Experimental Study to Improve the Flexural Behavior of Recycled Reinforced Concrete Beams Using Separate and Hybrid Fibers of Steel and Kortta |
| title_sort | experimental study to improve the flexural behavior of recycled reinforced concrete beams using separate and hybrid fibers of steel and kortta |
| topic | separate fibers hybrid fibers flexural behavior reinforced concrete beam recycled aggregate |
| url | https://cer.qom.ac.ir/article_1939_cfd36f50378b3a4f71d17e4dec7e5e61.pdf |
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