Shear Strength of Reinforced Fibrous-self Compacted Concrete Box Girder using Recycled Concrete Aggregate
Protection of environmental and conservation of natural resources is a fundamental issue in today’s world. In this research, the shear behavior of reinforced concrete box girders with recycled aggregate (RA), steel fiber, and internal diaphragms were investigated. Eleven reinforced concrete box gird...
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| Format: | Article |
| Language: | English |
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Unviversity of Technology- Iraq
2021-08-01
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| Series: | Engineering and Technology Journal |
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| Online Access: | https://etj.uotechnology.edu.iq/article_169023_4e75e1c8a905393fdc9e2a52a3206a8d.pdf |
| _version_ | 1827366722563211264 |
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| author | Mohammed Hadi Eyad Sayhood Ali Resheq |
| author_facet | Mohammed Hadi Eyad Sayhood Ali Resheq |
| author_sort | Mohammed Hadi |
| collection | DOAJ |
| description | Protection of environmental and conservation of natural resources is a fundamental issue in today’s world. In this research, the shear behavior of reinforced concrete box girders with recycled aggregate (RA), steel fiber, and internal diaphragms were investigated. Eleven reinforced concrete box girders with typical longitudinal and transverse reinforcement were tested under two point loading until failure. The RA was prepared by crushing the collected waste of concrete from the laboratory test cylinders and cubes. The experimental variables considered include; RA percent of 50%, 75%, and 100%(replacing from NA), steel fiber with volumetric ratios (Vf) of 0.5%, 1.0%, and 2%, diaphragm numbers (two and three).The test results revealed that the shear strength of the box girders affected by the RA content, the ultimate load was decreased by (32, 25, and 19) % for the (100, 75, and 50) %RA concrete, respectively in compared with the control specimen. In contrast the steel fiber was more effective in strengthening of the RA concrete specimen, for the (Vf) of 0.5%, 1.0%, and 2.0% with non-fibrous 100% RA concrete, the strengthening were (25, 40, and 77) % respectively. Moreover, when 1.0% steel fibers added to the 100%, 75%, and 50%RA concrete respectively, the strengthening were (40 ,45 ,and48 )% compared each with its reference specimen. On the other hand, when two and three diaphragms used, the strengthening for the non-fibrous 100% RA concrete was (6% and 9%) respectively. cracking load, ultimate load, load- deflection, and concrete surface strain has been taken into consideration in this research. |
| first_indexed | 2024-03-08T08:54:45Z |
| format | Article |
| id | doaj.art-c1f7f49d2ede44e69eeb2d43b3723355 |
| institution | Directory Open Access Journal |
| issn | 1681-6900 2412-0758 |
| language | English |
| last_indexed | 2024-03-08T08:54:45Z |
| publishDate | 2021-08-01 |
| publisher | Unviversity of Technology- Iraq |
| record_format | Article |
| series | Engineering and Technology Journal |
| spelling | doaj.art-c1f7f49d2ede44e69eeb2d43b37233552024-02-01T07:18:19ZengUnviversity of Technology- IraqEngineering and Technology Journal1681-69002412-07582021-08-013981307132010.30684/etj.v39i8.2100169023Shear Strength of Reinforced Fibrous-self Compacted Concrete Box Girder using Recycled Concrete AggregateMohammed Hadi0Eyad Sayhood1Ali Resheq2Civil Engineering Department, University of Technology, Baghdad, Iraq.Civil Engineering Department, University of Technology, Baghdad, Iraq.Civil Engineering Department, University of Technology, Baghdad, Iraq.Protection of environmental and conservation of natural resources is a fundamental issue in today’s world. In this research, the shear behavior of reinforced concrete box girders with recycled aggregate (RA), steel fiber, and internal diaphragms were investigated. Eleven reinforced concrete box girders with typical longitudinal and transverse reinforcement were tested under two point loading until failure. The RA was prepared by crushing the collected waste of concrete from the laboratory test cylinders and cubes. The experimental variables considered include; RA percent of 50%, 75%, and 100%(replacing from NA), steel fiber with volumetric ratios (Vf) of 0.5%, 1.0%, and 2%, diaphragm numbers (two and three).The test results revealed that the shear strength of the box girders affected by the RA content, the ultimate load was decreased by (32, 25, and 19) % for the (100, 75, and 50) %RA concrete, respectively in compared with the control specimen. In contrast the steel fiber was more effective in strengthening of the RA concrete specimen, for the (Vf) of 0.5%, 1.0%, and 2.0% with non-fibrous 100% RA concrete, the strengthening were (25, 40, and 77) % respectively. Moreover, when 1.0% steel fibers added to the 100%, 75%, and 50%RA concrete respectively, the strengthening were (40 ,45 ,and48 )% compared each with its reference specimen. On the other hand, when two and three diaphragms used, the strengthening for the non-fibrous 100% RA concrete was (6% and 9%) respectively. cracking load, ultimate load, load- deflection, and concrete surface strain has been taken into consideration in this research.https://etj.uotechnology.edu.iq/article_169023_4e75e1c8a905393fdc9e2a52a3206a8d.pdfshear behaviorbox girderrecycled aggregatesteel fiberinternal diaphragms |
| spellingShingle | Mohammed Hadi Eyad Sayhood Ali Resheq Shear Strength of Reinforced Fibrous-self Compacted Concrete Box Girder using Recycled Concrete Aggregate Engineering and Technology Journal shear behavior box girder recycled aggregate steel fiber internal diaphragms |
| title | Shear Strength of Reinforced Fibrous-self Compacted Concrete Box Girder using Recycled Concrete Aggregate |
| title_full | Shear Strength of Reinforced Fibrous-self Compacted Concrete Box Girder using Recycled Concrete Aggregate |
| title_fullStr | Shear Strength of Reinforced Fibrous-self Compacted Concrete Box Girder using Recycled Concrete Aggregate |
| title_full_unstemmed | Shear Strength of Reinforced Fibrous-self Compacted Concrete Box Girder using Recycled Concrete Aggregate |
| title_short | Shear Strength of Reinforced Fibrous-self Compacted Concrete Box Girder using Recycled Concrete Aggregate |
| title_sort | shear strength of reinforced fibrous self compacted concrete box girder using recycled concrete aggregate |
| topic | shear behavior box girder recycled aggregate steel fiber internal diaphragms |
| url | https://etj.uotechnology.edu.iq/article_169023_4e75e1c8a905393fdc9e2a52a3206a8d.pdf |
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