Stress and strain relations of RC circular, square and rectangular columns externally wrapped with fiber ropes
Abstract This study explores the potential use of low-cost natural fiber reinforced rope polymers (FRRP) to improve the compressive behavior of circular, square, and rectangular reinforced concrete (RC) specimens. A total of 42 specimens were tested under monotonic axial compression in three groups....
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-02-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-024-54586-9 |
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| author | Qudeer Hussain Anat Ruangrassamee Tidarut Jirawattanasomkul Dawei Zhang |
| author_facet | Qudeer Hussain Anat Ruangrassamee Tidarut Jirawattanasomkul Dawei Zhang |
| author_sort | Qudeer Hussain |
| collection | DOAJ |
| description | Abstract This study explores the potential use of low-cost natural fiber reinforced rope polymers (FRRP) to improve the compressive behavior of circular, square, and rectangular reinforced concrete (RC) specimens. A total of 42 specimens were tested under monotonic axial compression in three groups. Groups were formed to differentiate specimens with different cross-sectional shapes such as circular, square, and rectangular. The findings demonstrate that FRRP can effectively boost the compressive behavior of RC columns. Circular specimens with three-layer hemp FRRP exhibited a 200% increase in compressive strength and a 270% improvement in corresponding strain. Cotton FRRP provided a 117% boost in compressive strength and a 233% enhancement in strain. In square specimens, three-layer hemp FRRP resulted in a 110% rise in compressive strength and a 186% increase in strain, while cotton confinement yielded improvements of 95% and 144%, respectively. For the square and rectangular specimens, the improvement in the compressive behavior was reduced compared to the circular specimens because of stress concentrations near corners. Moreover, the study showed that the hemp FRRP confinement outperformed the cotton confinement. The investigation also revealed that the existing analytical models were inadequate in predicting the mechanical properties of RC confined with natural FRRP. Therefore, the study introduces novel equations to predict the compressive strength and corresponding strain for both hemp and cotton confined concrete in various cross-sectional types. These proposed equations exhibit a good level of accuracy in predicting the compressive strength and corresponding strain. |
| first_indexed | 2024-03-07T15:03:34Z |
| format | Article |
| id | doaj.art-ab8f8dffc43a4de0b8492940c2c3b705 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-07T15:03:34Z |
| publishDate | 2024-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-ab8f8dffc43a4de0b8492940c2c3b7052024-03-05T19:00:00ZengNature PortfolioScientific Reports2045-23222024-02-0114112010.1038/s41598-024-54586-9Stress and strain relations of RC circular, square and rectangular columns externally wrapped with fiber ropesQudeer Hussain0Anat Ruangrassamee1Tidarut Jirawattanasomkul2Dawei Zhang3Center of Excellence in Earthquake Engineering and Vibration, Department of Civil Engineering, Faculty of Engineering, Chulalongkorn UniversityCenter of Excellence in Earthquake Engineering and Vibration, Department of Civil Engineering, Faculty of Engineering, Chulalongkorn UniversityCenter of Excellence in Innovative Construction Materials, Department of Civil Engineering, Faculty of Engineering, Chulalongkorn UniversityCollege of Civil Engineering and Architecture, Zhejiang UniversityAbstract This study explores the potential use of low-cost natural fiber reinforced rope polymers (FRRP) to improve the compressive behavior of circular, square, and rectangular reinforced concrete (RC) specimens. A total of 42 specimens were tested under monotonic axial compression in three groups. Groups were formed to differentiate specimens with different cross-sectional shapes such as circular, square, and rectangular. The findings demonstrate that FRRP can effectively boost the compressive behavior of RC columns. Circular specimens with three-layer hemp FRRP exhibited a 200% increase in compressive strength and a 270% improvement in corresponding strain. Cotton FRRP provided a 117% boost in compressive strength and a 233% enhancement in strain. In square specimens, three-layer hemp FRRP resulted in a 110% rise in compressive strength and a 186% increase in strain, while cotton confinement yielded improvements of 95% and 144%, respectively. For the square and rectangular specimens, the improvement in the compressive behavior was reduced compared to the circular specimens because of stress concentrations near corners. Moreover, the study showed that the hemp FRRP confinement outperformed the cotton confinement. The investigation also revealed that the existing analytical models were inadequate in predicting the mechanical properties of RC confined with natural FRRP. Therefore, the study introduces novel equations to predict the compressive strength and corresponding strain for both hemp and cotton confined concrete in various cross-sectional types. These proposed equations exhibit a good level of accuracy in predicting the compressive strength and corresponding strain.https://doi.org/10.1038/s41598-024-54586-9Hemp confinementCotton confinementFRRPAnalytical modelsCompressive behaviorReinforced concrete |
| spellingShingle | Qudeer Hussain Anat Ruangrassamee Tidarut Jirawattanasomkul Dawei Zhang Stress and strain relations of RC circular, square and rectangular columns externally wrapped with fiber ropes Scientific Reports Hemp confinement Cotton confinement FRRP Analytical models Compressive behavior Reinforced concrete |
| title | Stress and strain relations of RC circular, square and rectangular columns externally wrapped with fiber ropes |
| title_full | Stress and strain relations of RC circular, square and rectangular columns externally wrapped with fiber ropes |
| title_fullStr | Stress and strain relations of RC circular, square and rectangular columns externally wrapped with fiber ropes |
| title_full_unstemmed | Stress and strain relations of RC circular, square and rectangular columns externally wrapped with fiber ropes |
| title_short | Stress and strain relations of RC circular, square and rectangular columns externally wrapped with fiber ropes |
| title_sort | stress and strain relations of rc circular square and rectangular columns externally wrapped with fiber ropes |
| topic | Hemp confinement Cotton confinement FRRP Analytical models Compressive behavior Reinforced concrete |
| url | https://doi.org/10.1038/s41598-024-54586-9 |
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