Axial Impact Resistance of FRP-Confined Concrete
This study investigates the impact resistance of fiber-reinforced polymer (FRP) confined concrete. Concrete cylinders were wrapped with carbon FRP (CFRP) or glass FRP (GFRP) with a varied number of layers and wrapping schemes. The impact tests were conducted by using drop-weight apparatus at differe...
| Main Authors: | , |
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| Format: | Journal Article |
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American Society of Civil Engineers
2017
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| Online Access: | http://hdl.handle.net/20.500.11937/52274 |
| _version_ | 1848758888618262528 |
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| author | Pham, Thong Hao, Hong |
| author_facet | Pham, Thong Hao, Hong |
| author_sort | Pham, Thong |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | This study investigates the impact resistance of fiber-reinforced polymer (FRP) confined concrete. Concrete cylinders were wrapped with carbon FRP (CFRP) or glass FRP (GFRP) with a varied number of layers and wrapping schemes. The impact tests were conducted by using drop-weight apparatus at different impact velocities. Dynamic behavior of the specimens has been investigated. The experimental results have shown that the failure modes are very different than those from static tests. Identical specimens experienced different damage as the impact velocities changed. The dynamic rupture strain of FRP was found to be substantially lower compared with that under static loads. As a result, the FRP efficiency factors were 0.17 and 0.56 for CFRP and GFRP, respectively. Interestingly, although GFRP has lower tensile strength and elastic modulus, it showed much better performance against impact compared with CFRP in terms of both the strength and ductility. The higher rupture strain of GFRP compared with CFRP results in higher confinement efficiency of GFRP under impact loads. A confinement model is proposed to predict the confined concrete strength under impact. |
| first_indexed | 2025-11-14T09:51:09Z |
| format | Journal Article |
| id | curtin-20.500.11937-52274 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:51:09Z |
| publishDate | 2017 |
| publisher | American Society of Civil Engineers |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-522742017-09-14T02:05:47Z Axial Impact Resistance of FRP-Confined Concrete Pham, Thong Hao, Hong This study investigates the impact resistance of fiber-reinforced polymer (FRP) confined concrete. Concrete cylinders were wrapped with carbon FRP (CFRP) or glass FRP (GFRP) with a varied number of layers and wrapping schemes. The impact tests were conducted by using drop-weight apparatus at different impact velocities. Dynamic behavior of the specimens has been investigated. The experimental results have shown that the failure modes are very different than those from static tests. Identical specimens experienced different damage as the impact velocities changed. The dynamic rupture strain of FRP was found to be substantially lower compared with that under static loads. As a result, the FRP efficiency factors were 0.17 and 0.56 for CFRP and GFRP, respectively. Interestingly, although GFRP has lower tensile strength and elastic modulus, it showed much better performance against impact compared with CFRP in terms of both the strength and ductility. The higher rupture strain of GFRP compared with CFRP results in higher confinement efficiency of GFRP under impact loads. A confinement model is proposed to predict the confined concrete strength under impact. 2017 Journal Article http://hdl.handle.net/20.500.11937/52274 10.1061/(ASCE)CC.1943-5614.0000744 American Society of Civil Engineers fulltext |
| spellingShingle | Pham, Thong Hao, Hong Axial Impact Resistance of FRP-Confined Concrete |
| title | Axial Impact Resistance of FRP-Confined Concrete |
| title_full | Axial Impact Resistance of FRP-Confined Concrete |
| title_fullStr | Axial Impact Resistance of FRP-Confined Concrete |
| title_full_unstemmed | Axial Impact Resistance of FRP-Confined Concrete |
| title_short | Axial Impact Resistance of FRP-Confined Concrete |
| title_sort | axial impact resistance of frp-confined concrete |
| url | http://hdl.handle.net/20.500.11937/52274 |