Failure Mechanism and Mechanical Properties of a Retard-Bonded Prestressed Concrete Girder While Curing
The mechanical performance and failure mechanism of a retard-bonded (RB) type prestressed concrete (PC) girder in different curing periods are investigated through four-point loading experiments. Six RB-type PC girder specimens with three RB prestressed tendons (PTs) along the longitudinal direction...
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| Main Authors: | , , , |
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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/10.1155/2019/7153235 |
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| author | Wei-ning Sui Zi-yi Wang Zhong-hua Zhao Zhan-fei Wang |
| author_facet | Wei-ning Sui Zi-yi Wang Zhong-hua Zhao Zhan-fei Wang |
| author_sort | Wei-ning Sui |
| collection | DOAJ |
| description | The mechanical performance and failure mechanism of a retard-bonded (RB) type prestressed concrete (PC) girder in different curing periods are investigated through four-point loading experiments. Six RB-type PC girder specimens with three RB prestressed tendons (PTs) along the longitudinal direction were fabricated. The measurements include the following: the retard-bonded agent ages versus the load-carrying capacity of the girder, the deflection of girder, the strain distribution at key cross sections through the girder, the pressure at PT tensile and anchoring ends, crack distribution, and so on. The experimental results indicate that when stretching the PT within proper tensile period, the retarder curing ages have less impact on the cracking load and a greater impact on the ultimate bending strength; the ultimate bending strength of the RB-type PC girder increased with increased retarder curing. Nonetheless, stretching the PT after excessive retarder curing (after the retarder had solidified completely), the cracks in the PC girder’s pure bending segment are wider and less numerous, the ultimate bending strength of the girder is lower, and its ductility is poor. |
| format | Article |
| id | doaj-art-5055d5d0c6554cc59bf279ec877217e3 |
| 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-5055d5d0c6554cc59bf279ec877217e32025-02-03T01:07:17ZengWileyAdvances in Civil Engineering1687-80861687-80942019-01-01201910.1155/2019/71532357153235Failure Mechanism and Mechanical Properties of a Retard-Bonded Prestressed Concrete Girder While CuringWei-ning Sui0Zi-yi Wang1Zhong-hua Zhao2Zhan-fei Wang3Shenyang Jianzhu University, Shenyang 110168, ChinaShenyang Jianzhu University, Shenyang 110168, ChinaShenyang Urban Construction University, Shenyang 110167, ChinaShenyang Jianzhu University, Shenyang 110168, ChinaThe mechanical performance and failure mechanism of a retard-bonded (RB) type prestressed concrete (PC) girder in different curing periods are investigated through four-point loading experiments. Six RB-type PC girder specimens with three RB prestressed tendons (PTs) along the longitudinal direction were fabricated. The measurements include the following: the retard-bonded agent ages versus the load-carrying capacity of the girder, the deflection of girder, the strain distribution at key cross sections through the girder, the pressure at PT tensile and anchoring ends, crack distribution, and so on. The experimental results indicate that when stretching the PT within proper tensile period, the retarder curing ages have less impact on the cracking load and a greater impact on the ultimate bending strength; the ultimate bending strength of the RB-type PC girder increased with increased retarder curing. Nonetheless, stretching the PT after excessive retarder curing (after the retarder had solidified completely), the cracks in the PC girder’s pure bending segment are wider and less numerous, the ultimate bending strength of the girder is lower, and its ductility is poor.http://dx.doi.org/10.1155/2019/7153235 |
| spellingShingle | Wei-ning Sui Zi-yi Wang Zhong-hua Zhao Zhan-fei Wang Failure Mechanism and Mechanical Properties of a Retard-Bonded Prestressed Concrete Girder While Curing Advances in Civil Engineering |
| title | Failure Mechanism and Mechanical Properties of a Retard-Bonded Prestressed Concrete Girder While Curing |
| title_full | Failure Mechanism and Mechanical Properties of a Retard-Bonded Prestressed Concrete Girder While Curing |
| title_fullStr | Failure Mechanism and Mechanical Properties of a Retard-Bonded Prestressed Concrete Girder While Curing |
| title_full_unstemmed | Failure Mechanism and Mechanical Properties of a Retard-Bonded Prestressed Concrete Girder While Curing |
| title_short | Failure Mechanism and Mechanical Properties of a Retard-Bonded Prestressed Concrete Girder While Curing |
| title_sort | failure mechanism and mechanical properties of a retard bonded prestressed concrete girder while curing |
| url | http://dx.doi.org/10.1155/2019/7153235 |
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