Concrete Slab-Type Elements Strengthened with Cast-in-Place Carbon Textile Reinforced Concrete System
Although carbon textile reinforcement widely used to replace the steel reinforcing bars but the bonding strength of carbon textile is generally much smaller than that of common steel bars. This study examines the strengthening effect of concrete slab-type elements strengthened in flexure by carbon t...
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MDPI AG
2021-03-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/14/6/1437 |
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| author | Hyeong-Yeol Kim Young-Jun You Gum-Sung Ryu Gi-Hong Ahn Kyung-Taek Koh |
| author_facet | Hyeong-Yeol Kim Young-Jun You Gum-Sung Ryu Gi-Hong Ahn Kyung-Taek Koh |
| author_sort | Hyeong-Yeol Kim |
| collection | DOAJ |
| description | Although carbon textile reinforcement widely used to replace the steel reinforcing bars but the bonding strength of carbon textile is generally much smaller than that of common steel bars. This study examines the strengthening effect of concrete slab-type elements strengthened in flexure by carbon textile reinforcement according to the surface coating of textile and the amount of reinforcement. The effect of the surface coating of textile on the bond strength was evaluated through a direct pullout test with four different sizes of coating material. The surface coated specimens developed bond strength approximately twice that of the uncoated specimen. The flexural strengthening effect with respect to the amount of reinforcement was investigated by a series of flexural failure tests on full-scale reinforced concrete (RC) slab specimens strengthened by textile reinforced concrete (TRC) system. The flexural failure test results revealed that the TRC system-strengthened specimens develop load-carrying capacity that is improved to at least 150% compared to the non-strengthened specimen. The strengthening performance was not significantly influenced by the textile coating and was not proportional to the amount of reinforcement when this amount was increased, owing to the change in the failure mode. The outstanding constructability afforded by TRC strengthening was verified through field applications executing TRC strengthening by shotcreting on a concrete box culvert. |
| first_indexed | 2024-03-10T13:13:04Z |
| format | Article |
| id | doaj.art-e9e2bb220fad4716844d0ee57d87ff18 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T13:13:04Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-e9e2bb220fad4716844d0ee57d87ff182023-11-21T10:39:21ZengMDPI AGMaterials1996-19442021-03-01146143710.3390/ma14061437Concrete Slab-Type Elements Strengthened with Cast-in-Place Carbon Textile Reinforced Concrete SystemHyeong-Yeol Kim0Young-Jun You1Gum-Sung Ryu2Gi-Hong Ahn3Kyung-Taek Koh4Structural Engineering Department, Korea Institute of Civil Engineering and Building Technology (KICT), 283 Goyangdae-Ro, Ilsanseo-Gu, Goyang 10223, KoreaStructural Engineering Department, Korea Institute of Civil Engineering and Building Technology (KICT), 283 Goyangdae-Ro, Ilsanseo-Gu, Goyang 10223, KoreaStructural Engineering Department, Korea Institute of Civil Engineering and Building Technology (KICT), 283 Goyangdae-Ro, Ilsanseo-Gu, Goyang 10223, KoreaStructural Engineering Department, Korea Institute of Civil Engineering and Building Technology (KICT), 283 Goyangdae-Ro, Ilsanseo-Gu, Goyang 10223, KoreaStructural Engineering Department, Korea Institute of Civil Engineering and Building Technology (KICT), 283 Goyangdae-Ro, Ilsanseo-Gu, Goyang 10223, KoreaAlthough carbon textile reinforcement widely used to replace the steel reinforcing bars but the bonding strength of carbon textile is generally much smaller than that of common steel bars. This study examines the strengthening effect of concrete slab-type elements strengthened in flexure by carbon textile reinforcement according to the surface coating of textile and the amount of reinforcement. The effect of the surface coating of textile on the bond strength was evaluated through a direct pullout test with four different sizes of coating material. The surface coated specimens developed bond strength approximately twice that of the uncoated specimen. The flexural strengthening effect with respect to the amount of reinforcement was investigated by a series of flexural failure tests on full-scale reinforced concrete (RC) slab specimens strengthened by textile reinforced concrete (TRC) system. The flexural failure test results revealed that the TRC system-strengthened specimens develop load-carrying capacity that is improved to at least 150% compared to the non-strengthened specimen. The strengthening performance was not significantly influenced by the textile coating and was not proportional to the amount of reinforcement when this amount was increased, owing to the change in the failure mode. The outstanding constructability afforded by TRC strengthening was verified through field applications executing TRC strengthening by shotcreting on a concrete box culvert.https://www.mdpi.com/1996-1944/14/6/1437carbon textiletextile reinforced concrete (TRC)shotcretestructural testingflexural strengtheningbond test |
| spellingShingle | Hyeong-Yeol Kim Young-Jun You Gum-Sung Ryu Gi-Hong Ahn Kyung-Taek Koh Concrete Slab-Type Elements Strengthened with Cast-in-Place Carbon Textile Reinforced Concrete System Materials carbon textile textile reinforced concrete (TRC) shotcrete structural testing flexural strengthening bond test |
| title | Concrete Slab-Type Elements Strengthened with Cast-in-Place Carbon Textile Reinforced Concrete System |
| title_full | Concrete Slab-Type Elements Strengthened with Cast-in-Place Carbon Textile Reinforced Concrete System |
| title_fullStr | Concrete Slab-Type Elements Strengthened with Cast-in-Place Carbon Textile Reinforced Concrete System |
| title_full_unstemmed | Concrete Slab-Type Elements Strengthened with Cast-in-Place Carbon Textile Reinforced Concrete System |
| title_short | Concrete Slab-Type Elements Strengthened with Cast-in-Place Carbon Textile Reinforced Concrete System |
| title_sort | concrete slab type elements strengthened with cast in place carbon textile reinforced concrete system |
| topic | carbon textile textile reinforced concrete (TRC) shotcrete structural testing flexural strengthening bond test |
| url | https://www.mdpi.com/1996-1944/14/6/1437 |
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