Bond Behavior of CRACFST Columns after Exposure to Elevated Temperatures
The bond behavior of post-heated circular recycled aggregate concrete-filled steel tube (CRACFST) columns is experimentally investigated in this paper. A total of 24 heated push-out CRACFST specimens are prepared; at the same time, 3 unheated specimens are also prepared and tested for comparison. Th...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/4873451 |
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| author | Peng Hu Jiong-Feng Liang |
| author_facet | Peng Hu Jiong-Feng Liang |
| author_sort | Peng Hu |
| collection | DOAJ |
| description | The bond behavior of post-heated circular recycled aggregate concrete-filled steel tube (CRACFST) columns is experimentally investigated in this paper. A total of 24 heated push-out CRACFST specimens are prepared; at the same time, 3 unheated specimens are also prepared and tested for comparison. This paper investigates the effects of five variable parameters, namely, temperature, exposure period, recycled coarse aggregate (RCA) replacement ratio, concrete strength, and interface length-to-diameter ratio, on the bond stress-slip curves and bond strength. The results show that the push-out CRACFST specimens exhibit some differences in bond stress-slip curves at both ambient and high temperature. The bond strength increases with increasing temperature. Other parameters also have influence to some extent. On the basis of a regression analysis of the experimental data, a revised bond strength model is proposed to predict the post-heated bond behavior between recycled aggregate concrete and circular steel tube. |
| format | Article |
| id | doaj-art-af837f8ff2f64da3832b3f71eca9316f |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-af837f8ff2f64da3832b3f71eca9316f2025-02-03T06:01:19ZengWileyAdvances in Civil Engineering1687-80861687-80942019-01-01201910.1155/2019/48734514873451Bond Behavior of CRACFST Columns after Exposure to Elevated TemperaturesPeng Hu0Jiong-Feng Liang1College of Civil Engineering, Xi’an University of Architecture & Technology, Xi’an, Shanxi 710055, ChinaFaculty of Civil & Architecture Engineering, East China University of Technology, Nanchang, Jiangxi 330013, ChinaThe bond behavior of post-heated circular recycled aggregate concrete-filled steel tube (CRACFST) columns is experimentally investigated in this paper. A total of 24 heated push-out CRACFST specimens are prepared; at the same time, 3 unheated specimens are also prepared and tested for comparison. This paper investigates the effects of five variable parameters, namely, temperature, exposure period, recycled coarse aggregate (RCA) replacement ratio, concrete strength, and interface length-to-diameter ratio, on the bond stress-slip curves and bond strength. The results show that the push-out CRACFST specimens exhibit some differences in bond stress-slip curves at both ambient and high temperature. The bond strength increases with increasing temperature. Other parameters also have influence to some extent. On the basis of a regression analysis of the experimental data, a revised bond strength model is proposed to predict the post-heated bond behavior between recycled aggregate concrete and circular steel tube.http://dx.doi.org/10.1155/2019/4873451 |
| spellingShingle | Peng Hu Jiong-Feng Liang Bond Behavior of CRACFST Columns after Exposure to Elevated Temperatures Advances in Civil Engineering |
| title | Bond Behavior of CRACFST Columns after Exposure to Elevated Temperatures |
| title_full | Bond Behavior of CRACFST Columns after Exposure to Elevated Temperatures |
| title_fullStr | Bond Behavior of CRACFST Columns after Exposure to Elevated Temperatures |
| title_full_unstemmed | Bond Behavior of CRACFST Columns after Exposure to Elevated Temperatures |
| title_short | Bond Behavior of CRACFST Columns after Exposure to Elevated Temperatures |
| title_sort | bond behavior of cracfst columns after exposure to elevated temperatures |
| url | http://dx.doi.org/10.1155/2019/4873451 |
| work_keys_str_mv | AT penghu bondbehaviorofcracfstcolumnsafterexposuretoelevatedtemperatures AT jiongfengliang bondbehaviorofcracfstcolumnsafterexposuretoelevatedtemperatures |