Effect of slitting of carbon fiber-reinforced plastic strip on flexural properties of reinforced concrete
In this study, reinforced concrete was manufactured by attaching a carbon fiber reinforced plastic (CFRP) strips to the surface of the concrete. Strips with the same total area were slitted into one, two, three, four, and six pieces and attached to the upper, lower, and side parts of the concrete. T...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2022-01-01
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| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/ac6a4a |
| _version_ | 1797746342695534592 |
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| author | Ji Eun Kwon See Hyeon Chae Sun Min Kwon Ye Dam Jeong Euigyung Jeong Jongwon Kim |
| author_facet | Ji Eun Kwon See Hyeon Chae Sun Min Kwon Ye Dam Jeong Euigyung Jeong Jongwon Kim |
| author_sort | Ji Eun Kwon |
| collection | DOAJ |
| description | In this study, reinforced concrete was manufactured by attaching a carbon fiber reinforced plastic (CFRP) strips to the surface of the concrete. Strips with the same total area were slitted into one, two, three, four, and six pieces and attached to the upper, lower, and side parts of the concrete. The flexural strength and fracture toughness of the reinforced concrete were investigated. As the number of slits in the strip increased, for the upper reinforcement, the flexural strength gradually increased from 7.88 MPa to 11.21 MPa; for the lower reinforcement, the flexural strength increased significantly from 7.88 MPa to 26.48 MPa and then gradually increased to 33.90 MPa; and for the side reinforcement, the flexural strength increased from 7.12 MPa to 13.96 MPa and then gradually decreased. In the adhesive fracture toughness test, the fracture toughness energy significantly increased from 142.38 J m ^−2 to 516.63 J m ^−2 as the contact area between the adhesive and the strip increased. Therefore, in reinforcing concrete using a CFRP strip, it was confirmed that the reinforcement effect was enhanced when the strip was slit and then attached. |
| first_indexed | 2024-03-12T15:36:27Z |
| format | Article |
| id | doaj.art-84217b9ca6ca4b698645de8937d22924 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:36:27Z |
| publishDate | 2022-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-84217b9ca6ca4b698645de8937d229242023-08-09T16:13:03ZengIOP PublishingMaterials Research Express2053-15912022-01-019404560210.1088/2053-1591/ac6a4aEffect of slitting of carbon fiber-reinforced plastic strip on flexural properties of reinforced concreteJi Eun Kwon0See Hyeon Chae1Sun Min Kwon2Ye Dam Jeong3Euigyung Jeong4Jongwon Kim5https://orcid.org/0000-0001-6972-569XDepartment of Fiber System Engineering, Yeungnam University , Gyeongsan 38541, Republic of KoreaDepartment of Fiber System Engineering, Yeungnam University , Gyeongsan 38541, Republic of KoreaDepartment of Fiber System Engineering, Yeungnam University , Gyeongsan 38541, Republic of KoreaDepartment of Fiber System Engineering, Yeungnam University , Gyeongsan 38541, Republic of KoreaDepartment of Textile System Engineering, Kyungpook National University , Daegu 41566, Republic of KoreaDepartment of Fiber System Engineering, Yeungnam University , Gyeongsan 38541, Republic of KoreaIn this study, reinforced concrete was manufactured by attaching a carbon fiber reinforced plastic (CFRP) strips to the surface of the concrete. Strips with the same total area were slitted into one, two, three, four, and six pieces and attached to the upper, lower, and side parts of the concrete. The flexural strength and fracture toughness of the reinforced concrete were investigated. As the number of slits in the strip increased, for the upper reinforcement, the flexural strength gradually increased from 7.88 MPa to 11.21 MPa; for the lower reinforcement, the flexural strength increased significantly from 7.88 MPa to 26.48 MPa and then gradually increased to 33.90 MPa; and for the side reinforcement, the flexural strength increased from 7.12 MPa to 13.96 MPa and then gradually decreased. In the adhesive fracture toughness test, the fracture toughness energy significantly increased from 142.38 J m ^−2 to 516.63 J m ^−2 as the contact area between the adhesive and the strip increased. Therefore, in reinforcing concrete using a CFRP strip, it was confirmed that the reinforcement effect was enhanced when the strip was slit and then attached.https://doi.org/10.1088/2053-1591/ac6a4areinforced concretecarbon fiber-reinforced plastic stripeffective adhesive areaflexural strengthfracture toughness |
| spellingShingle | Ji Eun Kwon See Hyeon Chae Sun Min Kwon Ye Dam Jeong Euigyung Jeong Jongwon Kim Effect of slitting of carbon fiber-reinforced plastic strip on flexural properties of reinforced concrete Materials Research Express reinforced concrete carbon fiber-reinforced plastic strip effective adhesive area flexural strength fracture toughness |
| title | Effect of slitting of carbon fiber-reinforced plastic strip on flexural properties of reinforced concrete |
| title_full | Effect of slitting of carbon fiber-reinforced plastic strip on flexural properties of reinforced concrete |
| title_fullStr | Effect of slitting of carbon fiber-reinforced plastic strip on flexural properties of reinforced concrete |
| title_full_unstemmed | Effect of slitting of carbon fiber-reinforced plastic strip on flexural properties of reinforced concrete |
| title_short | Effect of slitting of carbon fiber-reinforced plastic strip on flexural properties of reinforced concrete |
| title_sort | effect of slitting of carbon fiber reinforced plastic strip on flexural properties of reinforced concrete |
| topic | reinforced concrete carbon fiber-reinforced plastic strip effective adhesive area flexural strength fracture toughness |
| url | https://doi.org/10.1088/2053-1591/ac6a4a |
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